10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549 

FORM 10-Q

☒    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2021

or

☐    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For transition period from __________ to __________ 

Commission File Number: 001-35791

Northfield Bancorp, Inc.

(Exact name of registrant as specified in its charter) 

Delaware	80-0882592
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

581 Main Street,	Woodbridge,	New Jersey	07095
(Address of principal executive offices)			(Zip Code)

Registrant’s telephone number, including area code: (732) 499-7200

Not Applicable

(Former name, former address, and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of exchange on which registered
Common stock, par value $0.01 per share	NFBK	The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes ☒    No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes ☒    No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act:
Large accelerated filer	☐	Accelerated filer	☒
Non-accelerated filer	☐	Smaller reporting company	☐
Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes ☐ No ☒.

As of April 30, 2021, the registrant had 51,303,231 shares of Common Stock, par value $0.01 per share, issued and outstanding.

NORTHFIELD BANCORP, INC.

Form 10-Q Quarterly Report

Table of Contents

		Page
PART I - FINANCIAL INFORMATION
Item 1.	Financial Statements	4
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	45
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	60
Item 4.	Controls and Procedures	62
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	63
Item 1A.	Risk Factors	63
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	63
Item 3.	Defaults Upon Senior Securities	63
Item 4.	Mine Safety Disclosures	63
Item 5.	Other Information	63
Item 6.	Exhibits	64
	SIGNATURES	65

3

PART I

ITEM 1.     FINANCIAL STATEMENTS

NORTHFIELD BANCORP, INC.

CONSOLIDATED BALANCE SHEETS

(Unaudited) (In thousands, except share amounts)

	March 31, 2021		December 31, 2020
ASSETS:
Cash and due from banks	$	15,920	$	16,115
Interest-bearing deposits in other financial institutions	111,650		71,429
Total cash and cash equivalents	127,570		87,544
Trading securities	12,142		12,291
Debt securities available-for-sale, at estimated fair value (and no allowance for credit losses at March 31, 2021)	1,207,238		1,264,805
Debt securities held-to-maturity, at amortized cost	6,913		7,234
(estimated fair value of $7,241 at March 31, 2021, and $7,574 at December 31, 2020, and no allowance for credit losses at March 31, 2021)
Equity securities	473		253
Loans held-for-sale	—		19,895
Loans held-for-investment, net	3,933,015		3,823,238
Less: allowance for loan losses	(43,197)		(37,607)
Net loans held-for-investment	3,889,818		3,785,631
Accrued interest receivable	14,753		14,690
Bank-owned life insurance	162,771		161,924
Federal Home Loan Bank (“FHLB”) of New York stock, at cost	28,641		28,641
Operating lease right-of-use assets	35,662		36,741
Premises and equipment, net	27,509		28,188
Goodwill	41,320		41,320
Other assets	22,114		25,387
Total assets	$	5,576,924	$	5,514,544
LIABILITIES AND STOCKHOLDERS’ EQUITY:
LIABILITIES:
Deposits	$	4,135,716	$	4,076,551
Securities sold under agreements to repurchase	75,000		75,000
FHLB advances and other borrowings	517,170		516,789
Operating lease liabilities	42,067		42,734
Advance payments by borrowers for taxes and insurance	24,027		19,677
Accrued expenses and other liabilities	28,379		29,812
Total liabilities	4,822,359		4,760,563
STOCKHOLDERS’ EQUITY:
Preferred stock, $0.01 par value: 25,000,000 shares authorized, none issued or outstanding	—		—
Common stock, $0.01 par value: 150,000,000 shares authorized, 64,770,875 shares issued at
March 31, 2021 and December 31, 2020, 51,668,197 and 52,209,897 outstanding at March 31, 2021, and December 31, 2020, respectively	648		648
Additional paid-in-capital	589,188		590,506
Unallocated common stock held by employee stock ownership plan	(18,286)		(18,529)
Retained earnings	348,236		338,093
Accumulated other comprehensive income	12,267		13,160
Treasury stock at cost: 13,102,678 and 12,560,978 shares at March 31, 2021 and December 31, 2020, respectively	(177,488)		(169,897)
Total stockholders’ equity	754,565		753,981
Total liabilities and stockholders’ equity	$	5,576,924	$	5,514,544

See accompanying notes to unaudited consolidated financial statements.

4

NORTHFIELD BANCORP, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME 

(Unaudited) (In thousands, except per share data) 

	Three Months Ended March 31,
	2021		2020
Interest income:
Loans	$	41,277	$	35,337
Mortgage-backed securities	2,959		5,622
Other securities	424		1,024
FHLB of New York dividends	370		577
Deposits in other financial institutions	37		172
Total interest income	45,067		42,732
Interest expense:
Deposits	1,870		9,279
Borrowings	3,021		3,520
Total interest expense	4,891		12,799
Net interest income	40,176		29,933
(Credit) provision for loan losses	(2,374)		8,183
Net interest income after provision for loan losses	42,550		21,750
Non-interest income:
Fees and service charges for customer services	1,197		1,120
Income on bank-owned life insurance	848		876
Gains (losses) on available-for-sale debt securities, net	97		(13)
Gains (losses) on trading securities, net	364		(1,992)
Other	130		117
Total non-interest income	2,636		108
Non-interest expense:
Compensation and employee benefits	10,532		7,289
Occupancy	3,701		3,060
Furniture and equipment	437		333
Data processing	1,632		1,460
Professional fees	906		1,109
Advertising	465		818
Federal Deposit Insurance Corporation ("FDIC") insurance	375		—
Other	1,515		1,613
Total non-interest expense	19,563		15,682
Income before income tax expense	25,623		6,176
Income tax expense	6,946		1,625
Net income	$	18,677	$	4,551
Net income per common share:
Basic	$	0.38	$	0.10
Diluted	$	0.38	$	0.10
See accompanying notes to unaudited consolidated financial statements.

5

NORTHFIELD BANCORP, INC. CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - (Continued) (Unaudited) (In thousands)
	Three Months Ended March 31,
	2021		2020
Net income	$	18,677	$	4,551
Other comprehensive income:
Unrealized (losses) gains on debt securities available-for-sale:
Net unrealized holding (losses) gains	(1,144)		8,310
Less: reclassification adjustment for net (gains) losses included in net income	(97)		13
Net unrealized (losses) gains	(1,241)		8,323
Income tax benefit (expense) related to net unrealized holding (losses) gains on debt securities available-for-sale	321		(2,326)
Income tax expense (benefit) related to reclassification adjustment for (gains) losses included in net income	27		(3)
Other comprehensive (loss) income, net of tax	(893)		5,994
Comprehensive income	$	17,784	$	10,545

See accompanying notes to unaudited consolidated financial statements.

6

NORTHFIELD BANCORP, INC.

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

Three Months Ended March 31, 2021 and 2020

(Unaudited) (In thousands, except share data) 

	Common Stock
	Shares Outstanding	Par Value		Additional Paid-in Capital		Unallocated Common Stock Held by the Employee Stock Ownership Plan		Retained Earnings		Accumulated Other Comprehensive Income (loss) Net of tax		Treasury Stock		Total Stockholders' Equity
Balance at December 31, 2019	49,175,347	$	609	$	548,486	$	(19,740)	$	322,581	$	4,699	$	(160,782)	$	695,853
Net income								4,551						4,551
Other comprehensive income, net of tax										5,994				5,994
ESOP shares allocated or committed to be released				198		248								446
Stock compensation expense				448										448
Issuance of restricted stock	103,581			(1,416)								1,416		—
Exercise of stock options, net	13,000			(4)								179		175
Cash dividends declared and paid ($0.11 per common share)								(5,151)						(5,151)
Balance at March 31, 2020	49,291,928	$	609	$	547,712	$	(19,492)	$	321,981	$	10,693	$	(159,187)	$	702,316
Balance at December 31, 2020	52,209,897	$	648	$	590,506	$	(18,529)	$	338,093	$	13,160	$	(169,897)	$	753,981
Cumulative adjustment for adoption of ASU 2016-13								(3,087)						(3,087)
Balance at January 1, 2021	52,209,897	648		590,506		(18,529)		335,006		13,160		(169,897)		750,894
Net income								18,677						18,677
Other comprehensive loss, net of tax										(893)				(893)
ESOP shares allocated or committed to be released				169		243								412
Stock compensation expense				244										244
Restricted stock issuance	147,307			(1,821)								1,821		—
Restricted stock forfeitures	(1,674)			26								(26)		—
Exercise of stock options, net	54,990			64								744		808
Cash dividends declared and paid ($0.11 per common share)								(5,447)						(5,447)
Repurchase of treasury stock (average cost of $13.64 per share)	(742,323)											(10,130)		(10,130)
Balance at March 31, 2021	51,668,197	$	648	$	589,188	$	(18,286)	$	348,236	$	12,267	$	(177,488)	$	754,565

See accompanying notes to unaudited consolidated financial statements.

7

NORTHFIELD BANCORP, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited) (In thousands)

	Three Months Ended March 31,
	2021		2020
Net income	$	18,677	$	4,551
Adjustments to reconcile net income to net cash provided by operating activities:
(Recovery) provision for loan losses	(2,374)		8,183
ESOP and stock compensation expense	656		894
Depreciation	972		795
Amortization of premiums, and deferred loan costs, net of (accretion) discounts, and deferred loan fees	564		1,065
Amortization of intangible assets	50		55
Amortization of operating lease right-of-use assets	1,079		1,059
Income on bank-owned life insurance	(848)		(876)
Net gain on sale of loans held-for-sale	(39)		—
(Gains) losses on available-for-sale debt securities, net	(97)		13
(Gains) losses on trading securities, net	(364)		1,992
Net sales of trading securities	513		842
(Increase) decrease in accrued interest receivable	(63)		311
Decrease (increase) in other assets	2,905		(1,023)
Decrease in accrued expenses and other liabilities	(1,433)		(5,912)
Net cash provided by operating activities	20,198		11,949
Cash flows from investing activities:
Net increase in loans receivable	(107,720)		(72,609)
Proceeds from sale of loans held-for-sale	23,537		—
Purchases of FHLB of New York stock	—		(7,515)
Redemptions of FHLB of New York stock	—		17,235
Purchases of debt securities available-for-sale	(103,743)		(26,320)
Purchases of equity securities	(220)		(142)
Principal payments and maturities on debt securities available-for-sale	152,892		110,946
Principal payments and maturities on debt securities held-to-maturity	306		52
Proceeds from sale of debt securities available-for-sale	5,942		—
Proceeds from bank-owned life insurance	—		2
Purchases and improvements of premises and equipment	(293)		(806)
Net cash (used in) provided by investing activities	(29,299)		20,843
Cash flows from financing activities:
Net increase in deposits	59,165		77,313
Dividends paid	(5,447)		(5,151)
Exercise of stock options	808		175
Purchase of treasury stock	(10,130)		—
Increase in advance payments by borrowers for taxes and insurance	4,350		2,399
Proceeds from securities sold under agreements to repurchase and other borrowings	381		220,353
Repayments related to securities sold under agreements to repurchase and other borrowings	—		(361,000)
Net cash provided by (used in) financing activities	49,127		(65,911)
Net increase (decrease) in cash and cash equivalents	40,026		(33,119)
Cash and cash equivalents at beginning of period	87,544		147,818
Cash and cash equivalents at end of period	$	127,570	$	114,699

See accompanying notes to unaudited consolidated financial statements.

8

NORTHFIELD BANCORP, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS - (Continued)

(Unaudited) (In thousands)

	Three Months Ended March 31,
	2021		2020
Supplemental cash flow information:
Cash paid during the period for:
Interest	$	5,042	$	13,003
Income taxes	496		550
Non-cash transactions:
Loan charge-offs, net	2,389		90
Transfer of loans held-for-investment to loans-held-for-sale at fair value	5,215		—
Transfer of loans held-for-sale at fair value to loans held-for-investment	1,612		—
Transfer of loans held-for-investment to other real estate owned	100		—
Right-of-use assets obtained in exchange for new lease liabilities	—		3,028

See accompanying notes to unaudited consolidated financial statements.

9

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements

Note 1 – Consolidated Financial Statements

Basis of Presentation

The consolidated financial statements are comprised of the accounts of Northfield Bancorp, Inc. (and its wholly owned subsidiaries, Northfield Investments, Inc. and Northfield Bank (the “Bank”), and the Bank’s wholly-owned subsidiaries, NSB Services Corp. and NSB Realty Trust, collectively the “Company”). All significant intercompany accounts and transactions have been eliminated in consolidation.

In the opinion of management, all adjustments (consisting solely of normal and recurring adjustments) necessary for the fair presentation of the consolidated balance sheets and the consolidated statements of comprehensive income for the unaudited periods presented have been included. The results of operations and other data presented for the three months ended March 31, 2021 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2021 or for any other period. Whenever necessary, certain prior year amounts are reclassified to conform to the current year presentation.

In preparing the unaudited consolidated financial statements in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”), management has made estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheets and the consolidated statements of comprehensive income for the periods indicated. Material estimates that are particularly susceptible to change are: the allowance for loan losses, estimated cash flows of our purchased credit-deteriorated (“PCD”, or, previously, purchased credit-impaired “PCI” ) loans and the valuation allowance against deferred tax assets. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the consolidated financial statements in the period they are deemed necessary. While management uses its best judgment, actual amounts or results could differ significantly from those estimates.

Certain information and note disclosures usually included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for the preparation of interim financial statements. The consolidated financial statements presented should be read in conjunction with the audited consolidated financial statements and notes to consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020, as filed with the SEC. 

Loans and Allowance for Credit Losses

On January 1, 2021, the Company adopted ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): “Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (“CECL”) methodology. The Company used the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. The adoption of the new standard resulted in the Company recording an increase in the allowance for credit losses of $11.1 million, comprised of $10.4 million and $737,000, respectively, for loans and unfunded commitments, including $6.8 million related to PCD loans. For PCD loans, the allowance for credit losses recorded is recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity. The remaining increase to the allowance for credit losses of $4.3 million was offset in stockholders' equity and deferred taxes. As a result of adopting CECL, the Company's prior distinction between the originated loan portfolio and the non-PCD acquired loan portfolio is no longer necessary. Results for reporting periods beginning after January 1, 2021 are presented under CECL, while prior period amounts continue to be recorded with previously applicable U.S. GAAP. Further information regarding the impact of CECL can be found in Note 6 - Loans, Note 7 - Allowance for Loan Losses and Note 15 - Recent Accounting Pronouncements Adopted.

10

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

COVID-19

On March 13, 2020, the Coronavirus Disease (COVID-19) pandemic was declared a national emergency in the United States. The spread of COVID-19 has negatively impacted the national and local economy, disrupted supply chains and increased unemployment levels. The initial temporary closure and gradual reopening of many businesses and the implementation of social distancing and stay-at-home policies has and will continue to impact many of the Company’s customers. The Company is committed to supporting its customers, employees and communities during this time of recovery and continues to update protocols to adapt to the changing environment. The Company's bank branches offer drive through services without interruption, while lobbies are fully open or accessible to clients via appointment. The Company continues to provide secure and efficient remote and in-person work options for back office employees.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act was signed into law. It contains substantial tax and spending provisions intended to address the impact of the COVID-19 pandemic. The CARES Act includes a range of other provisions designed to support the U.S. economy and mitigate the impact of COVID-19 on financial institutions and their customers, including through the authorization of various relief programs and measures that the U.S. Department of the Treasury, the Small Business Administration, the Board of Governors of the Federal Reserve System, and other federal banking agencies have implemented or may implement.

The CARES Act also includes a provision that permits a financial institution to elect to suspend temporarily TDR accounting under current U.S. generally accepted accounting principles (“U.S. GAAP”) in certain circumstances. To be eligible, a loan modification must be: (1) related to COVID-19; (2) executed on a loan that was not more than 30 days past due as of December 31, 2019; and (3) executed between March 1, 2020, and the earlier of (a) 60 days after the date of termination of the national emergency or (b) December 31, 2020. This relief was further extended by the Consolidated Appropriations Act to the earlier of January 1, 2022 or 60 days after the date of termination of the national emergency. The relief provided includes short-term (e.g., up to six months) modifications such as payment deferrals, fee waivers, extensions of repayment terms, or delays in payment that are insignificant. Borrowers considered current are those that are less than 30 days past due on their contractual payments at the time a modification program is implemented. The banking regulators issued similar guidance, which also clarified that a COVID-19-related modification should not be considered a TDR if the borrower was current on payments at the time the underlying loan modification program was implemented and if the modification is considered to be short-term. In response to the COVID-19 pandemic and its economic impact to customers, the Company introduced a short-term modification program in March 2020 that provided temporary payment relief to those borrowers directly impacted by COVID-19. The program allows for a deferral of payments typically for 90 days, which may be extended for additional 90 day periods. See Note 6 - Loans for additional details of the Company's loan modification program.

A provision in the CARES Act provides for a loan guarantee program called the Paycheck Protection Program (“PPP”), which provides 100% federally guaranteed loans for small businesses to cover payroll, utilities, rent and interest. These small business loans are fully guaranteed by the Small Business Administration (“SBA”) and may be forgiven if borrowers maintain their payrolls and satisfy certain other conditions for a period of time during the COVID-19 pandemic. As of March 31, 2021, the Company had originated over 1,757 PPP loans to new and existing customers, totaling approximately $167.9 million. PPP provides for lender processing fees that range from 1% to 5% of the final disbursement made to individual borrowers. As of March 31, 2021, we have received cumulative loan processing fees of $8.8 million, of which $3.1 million has been recognized in earnings through March 31, 2021, including $1.3 million recognized in the quarter ended March 31, 2021. The remaining unearned fees will be recognized in income over the remaining term of the loans. PPP loans are fully guaranteed by the SBA and are therefore excluded from the allowance for loan and lease losses calculation.

The Company continues to maintain a strong liquidity and capital position as a buffer to protect against the economic uncertainties presented by the COVID-19 pandemic. As of March 31, 2021, both the Company and the Bank's capital ratios were in excess of regulatory requirements and are both currently classified as well capitalized. The Company maintains access to multiple sources of liquidity and expects to have sufficient funds available to meet current commitments in the normal course of business.

11

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

While the Company has not to date incurred any material adverse effects on its results of operations as a result of COVID-19, the full impact of the pandemic is still unknown at this time and will depend on future developments, including the duration of the pandemic, the success of the continued COVID-19 vaccine rollout, and other actions taken by governmental authorities and other third parties in response to the pandemic. If the pandemic continues and the economy cannot fully reopen in the near term, it may negatively impact the demand for loans and other services we offer. Because of the significant uncertainties related to the ultimate duration of the COVID-19 pandemic and its effects on our customers and prospects, and on the local and national economy, there can be no assurances as to how the crisis may ultimately affect the Company's loan portfolio, and business as a whole. As such, the Company could be subject to certain risks, any of which could have a material, adverse effect on our business, financial condition, liquidity, and results of operations.

Note 2 – Business Combinations

On July 1, 2020, the Company completed its acquisition of VSB Bancorp, Inc. (“Victory”), parent company of Victory State Bank, in a stock transaction, which after purchase accounting adjustments added $402.8 million to total assets, including $180.4 million to loans, and $354.6 million to deposits, and six branch offices in Staten Island, New York. Under the terms of the merger agreement, each share of Victory common stock was exchanged for 2.0463 shares of Northfield common stock with fractional shares paid out in cash.

The transaction was accounted for under the acquisition method of accounting. Under this method of accounting, the purchase price has been allocated to the respective assets acquired and liabilities assumed based upon their estimated fair values, net of tax, as of July 1, 2020, and results of operations have been included in the Company's consolidated statements of income from that date forward. The excess of consideration paid over the fair value of the net assets acquired has been recorded as goodwill.

The following table summarizes the estimated fair values of the assets acquired and the liabilities assumed at the date of acquisition for Victory (in thousands):

	At July 1, 2020
	Fair Value
Total Purchase Price	$	41,173
Assets acquired:
Cash and cash equivalents	$	72,875
Debt securities available for sale	126,931
Loans	180,431
Accrued interest receivable	1,415
Bank-owned life insurance	5,714
Premises and equipment	7,789
Other assets	4,702
Total assets acquired	399,857
Liabilities assumed:
Deposits	354,592
Other liabilities	7,001
Total liabilities assumed	361,593
Net assets acquired	$	38,264
Goodwill recorded in the merger	$	2,909

The calculation of goodwill is subject to change for up to one year after the date of acquisition as additional information that existed as of the acquisition date estimates and uncertainties become available. As the Company finalizes its review of the acquired assets and liabilities, certain adjustments to the recorded carrying values may be required.

Fair Value Measurement of Assets Assumed and Liabilities Assumed

Described below are the methods used to determine the fair value of the significant assets acquired and liabilities assumed in the Victory acquisition.

12

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Cash and cash equivalents. The estimated fair values of cash and cash equivalents approximate their stated face amounts, as these financial instruments are either due on demand or have short-term maturities.

Debt securities Available-for-Sale. The estimated fair values of the securities were calculated utilizing Level 2 inputs. Prices for the securities were obtained from an independent nationally recognized third-party pricing service.

Loans. The acquired loan portfolio was valued based on current guidance which defines fair value as the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. Level 3 inputs were utilized to value the portfolio and included the use of present value techniques employing cash flow estimates and the incorporated assumptions that marketplace participants would use in estimating fair values. In instances where reliable market information was not available, the Company used its own assumptions in an effort to determine reasonable fair value. Specifically, management utilized three separate fair value analyses which a market participant would employ in estimating the total fair value adjustment. The three separate fair valuation methodologies used were: 1) interest rate loan fair value analysis; 2) general credit fair value adjustment; and 3) specific credit fair value adjustment.

To prepare the interest rate fair value analysis, loans were grouped by characteristics such as loan type, term, collateral and rate. Market rates for similar loans were obtained from various external data sources and reviewed by Company management for reasonableness. The average of these rates was used as the fair value interest rate a market participant would utilize. A present value approach was utilized to calculate the interest rate fair value adjustment.

The general credit fair value adjustment was calculated using a two-part general credit fair value analysis: 1) expected credit losses; and 2) estimated fair value adjustment for qualitative factors. The expected credit losses were calculated using an average of historical losses of the acquired bank and industry bench mark loss rates observed for loans with similar underlying characteristics. The adjustment related to qualitative factors was impacted by general economic conditions and the risk related to lack of familiarity with the originator's underwriting process.

To calculate the specific credit fair value adjustment, management reviewed the acquired loan portfolio for loans meeting the definition of an impaired loan with deteriorated credit quality. Loans meeting this definition were reviewed by comparing the contractual cash flows to expected collectible cash flows. The aggregate expected cash flows less the acquisition date fair value resulted in an accretable yield amount. The accretable yield amount will be recognized over the life of the loans on a level yield basis as an adjustment to yield.

The following is a summary of the credit impaired loans acquired in the Victory acquisition as of the closing date (in thousands):

	July 1, 2020
Contractually required principal and interest	$	7,809
Contractual cash flows not expected to be collected (non-accretable discount)	3,315
Expected cash flows to be collected at acquisition	4,494
Interest component of expected cash flows (accretable yield)	(599)
Fair value of acquired loans	$	3,895

Leases. Five lease obligations were added as part of the acquisition, and the Company recorded a $2.5 million operating lease right-of-use asset and operating lease liability for these lease obligations.

Deposits. The fair values of deposit liabilities with no stated maturity (i.e., non-interest bearing demand accounts, interest-bearing negotiable orders of withdrawal ("NOW"), savings and money market accounts) are equal to the carrying amounts payable on demand. The fair values of certificates of deposit represent contractual cash flows, discounted to present value using interest rates currently offered on deposits with similar characteristics and remaining maturities.

13

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Note 3 – Debt Securities Available-for-Sale

The following is a comparative summary of mortgage-backed and other debt securities available-for-sale at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair
	cost		gains		losses		value
U.S. Government agency securities	$	2,758	$	—	$	(68)	$	2,690
Mortgage-backed securities:
Pass-through certificates:
Government sponsored enterprises ("GSEs")	244,399		9,522		(358)		253,563
Real estate mortgage investment conduits ("REMICs"):
GSE	818,623		7,392		(322)		825,693
	1,063,022		16,914		(680)		1,079,256
Other debt securities:
Municipal bonds	102		1		—		103
Corporate bonds	123,732		891		(181)		124,442
Asset-backed securities	733		14		—		747
	124,567		906		(181)		125,292
Total debt securities available-for-sale	$	1,190,347	$	17,820	$	(929)	$	1,207,238

	December 31, 2020
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair
	cost		gains		losses		value
U.S. Government agency securities	$	3,168	$	—	$	(10)	$	3,158
Mortgage-backed securities:
Pass-through certificates:
GSE	270,867		10,720		(244)		281,343
REMICs:
GSE	884,414		7,027		(476)		890,965
Non-GSE	4		—		—		4
	1,155,285		17,747		(720)		1,172,312
Other debt securities:
Municipal bonds	122		1		—		123
Corporate bonds	87,319		1,099		—		88,418
Asset-backed securities	779		15		—		794
	88,220		1,115		—		89,335
Total debt securities available-for-sale	$	1,246,673	$	18,862	$	(730)	$	1,264,805

14

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following is a summary of the expected maturity distribution of debt securities available-for-sale, other than mortgage-backed securities, at March 31, 2021 (in thousands):

Available-for-sale	Amortized cost		Estimated fair value
Due in one year or less	$	25,288	$	25,872
Due after one year through five years	83,535		83,815
Due after five years through ten years	17,769		17,548
Due after ten years	733		747
	$	127,325	$	127,982

 Contractual maturities for mortgage-backed securities are not included above, as expected maturities on mortgage-backed securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without penalties.

Certain debt securities available-for-sale are pledged or encumbered to secure borrowings under Pledge Agreements and Repurchase Agreements and for other purposes required by law. At March 31, 2021, the fair value of debt securities available-for-sale that were pledged to secure borrowings and deposits was $587.2 million.

For the three months ended March 31, 2021, the Company had gross proceeds of $5.9 million on sales and calls of debt securities available-for-sale, with gross realized gains of $97,000 related to sales of securities and no gross realized losses related to sales of securities. For the three months ended March 31, 2020, the Company had no gross proceeds on sales of debt securities available-for-sale, no gross realized gains, and gross realized losses of $13,000 related to calls of securities. The Company recognized net gains of $364,000 on its trading securities portfolio during the three months ended March 31, 2021, and net losses of $2.0 million during the three months ended March 31, 2020.

Gross unrealized losses on mortgage-backed and other debt securities available-for-sale, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2021, and December 31, 2020, were as follows (in thousands):

	March 31, 2021
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
U.S. Government agency securities	$	(68)	$	2,690	$	—	$	—	$	(68)	$	2,690
Mortgage-backed securities:
Pass-through certificates:
GSE	(353)		33,531		(5)		254		(358)		33,785
REMICs:
GSE	(322)		57,352		—		—		(322)		57,352
Other debt securities:
Corporate bonds	(181)		35,274		—		—		(181)		35,274
Total	$	(924)	$	128,847	$	(5)	$	254	$	(929)	$	129,101

15

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

	December 31, 2020
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
U.S. Government agency securities	(10)		$	3,158	$	—	$	—	$	(10)	$	3,158
Mortgage-backed securities:
Pass-through certificates:
GSE	(233)		28,419		(11)		459		(244)		28,878
REMICs:
GSE	(476)		210,569		—		—		(476)		210,569
Total	$	(719)	$	242,146	$	(11)	$	459	$	(730)	$	242,605

The Company held six pass-through mortgage-backed securities issued or guaranteed by GSEs that were in a continuous unrealized loss position of twelve months or greater at March 31, 2021. There were 22 pass-through mortgage-backed securities issued or guaranteed by GSEs, 44 REMIC mortgage-backed securities issued or guaranteed by GSEs, five corporate bonds and one U.S. Government agency security that were in an unrealized loss position of less than 12 months at March 31, 2021. All securities referred to above were rated investment grade at March 31, 2021.

Available for sale debt securities in unrealized loss positions are evaluated for impairment related to credit losses on a quarterly basis. In performing an assessment of whether any decline in fair value is due to a credit loss, the Company considers the extent to which the fair value is less than the amortized cost, changes in credit ratings, any adverse economic conditions, as well as all relevant information at the individual security level such as credit deterioration of the issuer or collateral underlying the security. In assessing the impairment, the Company compares the present value of cash flows expected to be collected with the amortized cost basis of the security. If it is determined that the decline in fair value was due to credit losses, an allowance for credit losses is recorded, limited to the amount the fair value is less than amortized cost basis. The Company did not recognize any allowance for credit losses on its available-for-sale debt securities during the three months ended March 31, 2021. 

The non-credit related decrease in the fair value, such as a decline due to changes in market interest rates, is recorded in other comprehensive income, net of tax. The Company also assesses the intent to sell the securities (as well as the likelihood of a near-term recovery). If the Company intends to sell an available for sale debt security or it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis, the debt security is written down to its fair value and the write down is charged to the debt security’s fair value at the reporting date with any incremental impairment reported in earnings.

The Company has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Accrued interest receivable associated with debt securities available-for-sale totaling $1.5 million at March 31, 2021, is reported in accrued interest receivable on the consolidated balance sheet.

16

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Note 4 – Debt Securities Held-to-Maturity

The following is a summary of mortgage-backed securities held-to-maturity at March 31, 2021, and December 31, 2020 (in thousands): 

	March 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	6,913	$	328	$	—	$	7,241
Total securities held-to-maturity	$	6,913	$	328	$	—	$	7,241

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	7,234	$	340	$	—	$	7,574
Total securities held-to-maturity	$	7,234	$	340	$	—	$	7,574

Contractual maturities for mortgage-backed securities are not presented, as expected maturities on mortgage-backed securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without penalties. There were no sales of held-to-maturity securities for the three months ended March 31, 2021 or March 31, 2020.

At March 31, 2021, debt securities held-to-maturity with a carrying value of $5.9 million were pledged to secure borrowings and deposits.

At March 31, 2021 and December 31, 2020, there were no debt securities held-to-maturity in an unrealized loss position.

The Company's held-to-maturity securities are residential mortgage-backed securities issued by Ginnie Mae, Freddie MAC and Fannie Mae, and it is expected that the securities will not be settled at prices less than the amortized cost bases of the securities as such securities are backed by the full faith and credit of and/or guaranteed by the U.S. government. Accordingly, no allowance for credit losses has been recorded for these securities.

The Company has made the accounting policy election to exclude accrued interest receivable on held-to-maturity securities from the estimate of credit losses. Accrued interest receivable associated with held-to-maturity securities totaling $20,800 at March 31, 2021, is reported in accrued interest receivable on the consolidated balance sheet.

Note 5 – Equity Securities

At March 31, 2021, and December 31, 2020, equity securities totaled $473,000 and $253,000, respectively. Equity securities consist of money market mutual funds recorded at fair value.

17

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Note 6 – Loans

On January 1, 2021, the Company adopted the CECL standard for measuring credit losses, which replaced the incurred loss methodology. As a result of adopting CECL, the Company combined it’s originated loan portfolio and the acquired loan portfolio into the respective portfolio segments. Other than to combine the originated and non-PCD acquired loan portfolios, the Company's portfolio segments and loan classes remain unchanged following the adoption of the CECL standard. Prior period disclosures have been revised to conform to current period presentation (by combining originated and acquired portfolio segments), however, the Company did not recast comparative financial information and that is still presented in accordance with previous applicable U.S. GAAP.

The following table summarizes the Company’s loans held-for-investment (in thousands):

	March 31,		December 31,
	2021		2020
Real estate loans:
Multifamily	$	2,571,409	$	2,509,310
Commercial mortgage	734,113		716,973
One-to-four family residential mortgage	202,948		210,817
Home equity and lines of credit	93,118		91,126
Construction and land	77,206		74,318
Total real estate loans	3,678,794		3,602,544
Commercial and industrial loans (1)	234,518		194,352
Other loans	1,658		3,029
Total commercial and industrial and other loans	236,176		197,381
Deferred origination loan costs, net (1)	—		4,795
Loans held-for-investment, net (excluding PCD/PCI)	3,914,970		3,804,720
PCD/PCI loans	18,045		18,518
Total Loans held-for-investment, net	3,933,015		3,823,238
Allowance for loan losses	(43,197)		(37,607)
Net loans held-for-investment	$	3,889,818	$	3,785,631

(1) Under CECL origination deferred fees, deferred fees on acquired loans, and purchase accounting adjustments in connection with loans acquired are included in loans by respective portfolio.

(2) Included in commercial and industrial loans at March 31, 2021 and December 31, 2020 are PPP loans totaling $167.9 million and $126.5 million, respectively.

The Company had no loans held-for-sale at March 31, 2021. At December 31, 2020, loans held-for-sale totaled $19.9 million.

In addition to originating loans, the Company may acquire loans through portfolio purchases or acquisitions of other companies. Purchased loans that have evidence of more than insignificant credit deterioration since origination are deemed purchased credit deteriorated (“PCD”) loans. In accordance with ASU 2016-13, with its adoption of the CECL standard, the Company did not reassess whether previously recognized purchased credit impaired (“PCI”) loans accounted for under prior accounting guidance met the criteria of a PCD loan as of the date of adoption and all loans considered to be PCI prior to the adoption of CECL were converted to PCD upon adoption. For PCD loans, each loan pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows. PCD loans totaled $18.0 million at March 31, 2021, as compared to $18.5 million of PCI loans at December 31, 2020. The majority of the PCD loan balance is attributable to those loans acquired as part of a Federal Deposit Insurance Corporation-assisted transaction. At March 31, 2021, PCD loans consisted of approximately 16% one-to-four family residential loans, 26% commercial real estate loans and 44% commercial and industrial loans, with the remaining balance in construction and home equity loans. At December 31, 2020, PCI loans consisted of approximately 22% one-to-four family residential loans, 23% commercial real estate loans and 40% commercial and industrial loans, with the remaining balance in home equity loans.

18

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Credit Quality Indicators

The Company monitors the credit quality of its loan portfolio on a regular basis. Credit quality is monitored by reviewing certain credit quality indicators. Management has determined that loan-to-value ratios (at period end) and internally assigned credit risk ratings by loan type are the key credit quality indicators that best measure the credit quality of the Company’s loan receivables. Loan-to-value (“LTV”) ratios used by management in monitoring credit quality are based on current period loan balances and original appraised values at the time of origination (unless a current appraisal has been obtained as a result of the loan being deemed impaired). 

The Company maintains a credit risk rating system as part of the risk assessment of its loan portfolio. The Company’s lending officers are required to assign a credit risk rating to each loan in their portfolio at origination. This risk rating is reviewed periodically and adjusted if necessary. Monthly, management presents monitored assets to the loan committee. In addition, the Company engages a third-party independent loan reviewer that performs semi-annual reviews of a sample of loans, validating the credit risk ratings assigned to such loans. The credit risk ratings play an important role in the establishment of the provision for loan losses and the allowance for loan losses for originated loans held-for-investment. After determining the loss factor for each originated portfolio segment held-for-investment, the collectively evaluated for impairment balance of the held-for-investment portfolio is multiplied by the collectively evaluated for impairment loss factor for the respective portfolio segment in order to determine the allowance for loans collectively evaluated for impairment.

    When assigning a risk rating to a loan, management utilizes the Bank’s internal nine-point credit risk rating system. 

1.Strong

2.Good

3.Acceptable

4.Adequate

5.Watch

6.Special Mention

7.Substandard

8.Doubtful

9.Loss

Loans rated 1 to 5 are considered pass ratings. An asset is classified substandard if it is inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Substandard assets have well defined weaknesses based on objective evidence, and are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Assets classified as doubtful have all of the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses present make collection or liquidation in full highly questionable and improbable based on current circumstances. Assets classified as loss are those considered uncollectible and of such little value that their continuance as assets is not warranted. Assets which do not currently expose the Company to sufficient risk to warrant classification in one of the aforementioned categories, but possess weaknesses, are required to be designated special mention.

19

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following table presents the Company’s loans held-for-investment, excluding PCD loans, by loan class, credit risk ratings and year of origination, as of March 31, 2021 (in thousands):

	March 31, 2021
	2021		2020		2019		2018		2017		Prior		Revolving Loans		Total
Real Estate:
Multifamily
Pass	$	161,305	$	562,841	$	407,309	$	345,635	$	283,681	$	793,689	$	44	$	2,554,504
Special Mention	—		—		—		—		—		450		—		450
Substandard	—		—		4,691		3,361		—		8,403		—		16,455
Total multifamily	161,305		562,841		412,000		348,996		283,681		802,542		44		2,571,409
Commercial
Pass	33,829		72,556		100,207		92,969		66,730		312,858		3,583		682,732
Special Mention	—		—		1,297		9,046		—		9,506		500		20,349
Substandard	—		2,470		9,660		328		4,079		14,495		—		31,032
Total commercial	33,829		75,026		111,164		102,343		70,809		336,859		4,083		734,113
One-to-four family residential
Pass	966		9,689		14,189		15,717		13,097		141,652		1,613		196,923
Special Mention	—		—		467		—		—		2,428		—		2,895
Substandard	—		—		600		—		—		2,530		—		3,130
Total one-to-four family residential	966		9,689		15,256		15,717		13,097		146,610		1,613		202,948
Construction and land
Pass	6,654		14,328		5,760		36,750		7,515		3,641		1,018		75,666
Special Mention	—		—		—		—		—		—		—		—
Substandard	—		—		1,150		390		—		—		—		1,540
Total construction and land	6,654		14,328		6,910		37,140		7,515		3,641		1,018		77,206
Home equity and lines of credit
Pass	3,831		14,641		9,894		8,832		3,315		13,848		38,019		92,380
Special Mention	—		—		—		—		—		306		—		306
Substandard	—		—		99		88		—		245		—		432
Total home equity and lines of credit	3,831		14,641		9,993		8,920		3,315		14,399		38,019		93,118
Total Real Estate Loans	206,585		676,525		555,323		513,116		378,417		1,304,051		44,777		3,678,794
Commercial and industrial
Pass	67,372		113,363		6,407		3,462		1,356		12,961		26,406		231,327
Special Mention	—		81		210		42		147		324		—		804
Substandard	—		499		360		666		—		862		—		2,387
Total commercial and industrial	67,372		113,943		6,977		4,170		1,503		14,147		26,406		234,518
Other
Pass	1,257		191		32		51		—		51		73		1,655
Substandard	—		—		—		—		—		3		—		3
Total other	1,257		191		32		51		—		54		73		1,658
Total loans held-for-investment, net	$	275,214	$	790,659	$	562,332	$	517,337	$	379,920	$	1,318,252	$	71,256	$	3,914,970

20

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following table details the recorded investment of loans held-for-investment, excluding PCI loans, net of deferred fees and costs, by loan type and credit quality indicator at December 31, 2020 (in thousands):

	At December 31, 2020
	Real Estate
	Multifamily		Commercial		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total
Internal Risk Rating
Pass	$	2,497,556	$	667,568	$	207,633	$	74,351	$	92,385	$	189,372	$	3,026	$	3,731,891
Special Mention	458		20,422		2,456		—		311		498		—		24,145
Substandard	14,920		29,576		2,133		—		441		1,611		3		48,684
Total loans held-for-investment, net	$	2,512,934	$	717,566	$	212,222	$	74,351	$	93,137	$	191,481	$	3,029	$	3,804,720

Past Due and Non-Accrual Loans

Included in loans receivable held-for-investment are loans for which the accrual of interest income has been discontinued due to deterioration in the financial condition of the borrowers. The recorded investment of these non-accrual loans was $8.4 million and $8.5 million at March 31, 2021, and December 31, 2020, respectively. Generally, loans are placed on non-accrual status when they become 90 days or more delinquent, or sooner if considered appropriate by management, and remain on non-accrual status until they are brought current, have six consecutive months of performance under the loan terms, and factors indicating reasonable doubt about the timely collection of payments no longer exist. Therefore, loans may be current in accordance with their loan terms, or may be less than 90 days delinquent and still be on a non-accruing status.    

When an individual loan no longer demonstrates the similar credit risk characteristics as other loans within its current segment, the Company evaluates each for expected credit losses on an individual basis. All non-accrual loans $500,000 and above and all loans designated as troubled debt restructures (“TDRs”) are individually evaluated. The non-accrual amounts included in loans individually evaluated for impairment were $5.4 million and $5.5 million at March 31, 2021, and December 31, 2020, respectively. Loans on non-accrual status with principal balances less than $500,000, and therefore not individually evaluated for impairment, amounted to $3.0 million at March 31, 2021, and $3.0 million at December 31, 2020. Loans past due 90 days or more and still accruing interest were $1.6 million at March 31, 2021, and $1.1 million at December 31, 2020, and consisted of loans that are considered well-secured and in the process of collection.

The Company had no loans held-for-sale at March 31, 2021. At December 31, 2020, the Company had $19.9 million in loans held-for-sale. At December 31, 2020, the loans held-for-sale were comprised of commercial real estate and multifamily loans, primarily accommodation (hotel or motel) loans that were modified in the form of interest and/or principal payment deferrals due to COVID-19 related hardships, and had not returned to contractual payments after 180 days of relief. The sale of these loans was completed in March 2021.

21

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following tables set forth the detail, and delinquency status, of non-performing loans (non-accrual loans and loans past due 90 days or more and still accruing), net of deferred fees and costs, at March 31, 2021, and December 31, 2020, excluding PCD/PCI loans (in thousands):

	March 31, 2021
	Total Non-Performing Loans
	Non-Accruing Loans
	Current		30-89 Days Past Due		90 Days or More Past Due		Total		90 Days or More Past Due and Accruing		Total Non-Performing Loans
Loans held-for-investment:
Real estate loans:
Commercial
Substandard	$	2,817	$	100	$	2,044	$	4,961	$	219	$	5,180
Total commercial	2,817		100		2,044		4,961		219		5,180
One-to-four family residential
Substandard	406		—		399		805		172		977
Total one-to-four family residential	406		—		399		805		172		977
Construction and land
Substandard	—		—		1,150		1,150		—		1,150
Total construction and land	—		—		1,150		1,150		—		1,150
Multifamily
Substandard	—		—		1,145		1,145		516		1,661
Total multifamily	—		—		1,145		1,145		516		1,661
Home equity and lines of credit
Substandard	58		—		129		187		—		187
Total home equity and lines of credit	58		—		129		187		—		187
Total real estate	3,281		100		4,867		8,248		907		9,155
Commercial and industrial loans
Pass	—		—		—		—		92		92
Special Mention	—		—		—		—		85		85
Substandard	1		36		161		198		561		759
Total commercial and industrial loans	1		36		161		198		738		936
Other loans
Pass	—		—		—		—		3		3
Total other	—		—		—		—		3		3
Total non-performing loans	$	3,282	$	136	$	5,028	$	8,446	$	1,648	$	10,094

22

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

	December 31, 2020
	Total Non-Performing Loans
	Non-Accruing Loans
	Current		30-89 Days Past Due		90 Days or More Past Due		Total		90 Days or More Past Due and Accruing		Total Non-Performing Loans
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	—	$	—	$	—	$	—	$	500	$	500
Substandard	2,829		537		2,863		6,229		—		$	6,229
Total commercial	2,829		537		2,863		6,229		500		6,729
One-to-four family residential
Substandard	413		—		493		906		174		1,080
Total one-to-four family residential	413		—		493		906		174		1,080
Multifamily
Substandard	—		—		1,153		1,153		—		1,153
Total multifamily	—		—		1,153		1,153		—		1,153
Home equity and lines of credit
Substandard	60		—		131		191		—		191
Total home equity and lines of credit	60		—		131		191		—		191
Total real estate	3,302		537		4,640		8,479		674		9,153
Commercial and industrial loans
Pass	—		—		—		—		101		101
Special Mention	—		—		—		—		85		85
Substandard	—		—		37		37		250		287
Total commercial and industrial loans	—		—		37		37		436		473
Other loans
Pass	—		—		—		—		3		3
Total other	—		—		—		—		3		3
Total non-performing loans	$	3,302	$	537	$	4,677	$	8,516	$	1,113	$	9,629

23

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following tables set forth the detail and delinquency status of loans held-for-investment, excluding PCD/PCI loans, net of deferred fees and costs, at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
			Past Due Loans
	30-89 Days Past Due		90 Days or More Past Due		90 Days or More Past Due and Accruing		Total Past Due		Current		Total Loans Receivable, net
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	1,651	$	—	$	—	$	1,651	$	681,081	$	682,732
Special Mention	—		—		—		—		20,349		20,349
Substandard	2,906		2,044		219		5,169		25,863		31,032
Total commercial	4,557		2,044		219		6,820		727,293		734,113
One-to-four family residential
Pass	1,827		—		—		1,827		195,096		196,923
Special Mention	1,085		—		—		1,085		1,810		2,895
Substandard	1,111		399		172		1,682		1,448		3,130
Total one-to-four family residential	4,023		399		172		4,594		198,354		202,948
Construction and land
Pass	—		—		—		—		75,666		75,666
Substandard	390		1,150		—		1,540		—		1,540
Total construction and land	390		1,150		—		1,540		75,666		77,206
Multifamily
Pass	1,256		—		—		1,256		2,553,248		2,554,504
Special Mention	—		—		—		—		450		450
Substandard	1,163		1,145		516		2,824		13,631		16,455
Total multifamily	2,419		1,145		516		4,080		2,567,329		2,571,409
Home equity and lines of credit
Pass	229		—		—		229		92,151		92,380
Special Mention	44		—		—		44		262		306
Substandard	99		129		—		228		204		432
Total home equity and lines of credit	372		129		—		501		92,617		93,118
Total real estate	11,761		4,867		907		17,535		3,661,259		3,678,794
Commercial and industrial
Pass	1,471		—		92		1,563		229,764		231,327
Special Mention	259		—		85		344		460		804
Substandard	785		161		561		1,507		880		2,387
Total commercial and industrial	2,515		161		738		3,414		231,104		234,518
Other loans
Pass	7		—		—		7		1,648		1,655
Substandard	—		—		3		3		—		3
Total other loans	7		—		3		10		1,648		1,658
Total loans held-for-investment	$	14,283	$	5,028	$	1,648	$	20,959	$	3,894,011	$	3,914,970

24

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

	December 31, 2020
	Performing (Accruing) Loans
	0-29 Days Past Due		30-89 Days Past Due		Total		Non-Performing Loans		Total Loans Receivable, net
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	660,996	$	6,072	$	667,068	$	500	$	667,568
Special Mention	20,350		72		20,422		—		20,422
Substandard	20,699		2,648		23,347		6,229		29,576
Total commercial	702,045		8,792		710,837		6,729		717,566
One-to-four family residential
Pass	207,351		282		207,633		—		207,633
Special Mention	1,586		870		2,456		—		2,456
Substandard	1,053		—		1,053		1,080		2,133
Total one-to-four family residential	209,990		1,152		211,142		1,080		212,222
Construction and land
Pass	73,357		994		74,351		—		74,351
Total construction and land	73,357		994		74,351		—		74,351
Multifamily
Pass	2,496,273		1,283		2,497,556		—		2,497,556
Special Mention	458		—		458		—		458
Substandard	13,157		610		13,767		1,153		14,920
Total multifamily	2,509,888		1,893		2,511,781		1,153		2,512,934
Home equity and lines of credit
Pass	92,305		80		92,385		—		92,385
Special Mention	111		200		311		—		311
Substandard	150		100		250		191		441
Total home equity and lines of credit	92,566		380		92,946		191		93,137
Total real estate	3,587,846		13,211		3,601,057		9,153		3,610,210
Commercial and industrial
Pass	188,639		632		189,271		101		189,372
Special Mention	352		61		413		85		498
Substandard	1,257		67		1,324		287		1,611
Total commercial and industrial	190,248		760		191,008		473		191,481
Other loans
Pass	3,015		11		3,026		—		3,026
Substandard	—		—		—		3		3
Total other loans	3,015		11		3,026		3		3,029
Total loans held-for-investment, net	$	3,781,109	$	13,982	$	3,795,091	$	9,629	$	3,804,720

25

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following table summarizes information on non-accrual loans, excluding PCD loans, at March 31, 2021 (in thousands):

	At or for the Three Months Ended
	March 31, 2021
	Recorded Investment		Unpaid Principal Balance		With No Related Allowance		Interest Income
Real estate loans:
Commercial	$	4,961	$	5,471	$	3,275	$	25
One-to-four family residential	805		836		228		6
Construction and land	1,150		1,150		1,150		—
Multifamily	1,145		1,154		—		14
Home equity and lines of credit	187		436		—		2
Commercial and industrial	198		392		1		2
Total non-accrual loans	$	8,446	$	9,439	$	4,654	$	49

The following table summarizes impaired loans as of December 31, 2020 (in thousands):

	December 31, 2020
	Recorded Investment		Unpaid Principal Balance		Related Allowance
With No Allowance Recorded:
Real estate loans:
Commercial	$	8,838	$	10,076	$	—
One-to-four family residential	1,903		2,032		—
Multifamily	626		1,097		—
Home equity and lines of credit	15		15		—
Total Real Estate	11,382		13,220		—
With a Related Allowance Recorded:
Real estate loans:
Commercial	1,812		2,244		(66)
Home equity and lines of credit	32		32		(3)
Total Real Estate	1,844		2,276		(69)
Commercial and industrial loans	16		16		(4)
Total:
Real estate loans
Commercial	10,650		12,320		(66)
One-to-four family residential	1,903		2,032		—
Multifamily	626		1,097		—
Home equity and lines of credit	47		47		(3)
Commercial and industrial loans	16		16		(4)
	$	13,242	$	15,512	$	(73)

26

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Included in the table above at December 31, 2020, are impaired loans with carrying balances of $7.8 million that were not written down by charge-offs or for which there are no specific reserves in our allowance for loan losses. Loans not written down by charge-offs or specific reserves at December 31, 2020, are considered to have sufficient collateral values, less costs to sell, to support the carrying balances of the loans.

The following table summarizes the average recorded investment in impaired loans, excluding PCI loans, and interest income recognized as of, and for, the three months March 31, 2020 (in thousands):

	March 31, 2020
	Average Recorded Investment		Interest Income
With No Allowance Recorded:
Real estate loans:
Commercial	$	16,198	$	112
One-to-four family residential	2,464		33
Multifamily	1,036		13
Home equity and lines of credit	21		—
Commercial and industrial loans	38		—
With a Related Allowance Recorded:
Real estate loans:
Commercial	930		—
Home equity and lines of credit	33		1
Commercial and industrial loans	18		—
Total:
Real estate loans
Commercial	17,128		112
One-to-four family residential	2,464		33
Multifamily	1,036		13
Home equity and lines of credit	54		1
Commercial and industrial loans	56		—
	$	20,738	$	159

Collateral-Dependent Loans

Loans for which the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral are considered to be collateral-dependent loans. Collateral can have a significant financial effect in mitigating exposure to credit risk and, where there is sufficient collateral, an allowance for expected credit losses is not recognized or is minimal. For collateral-dependent loans, the allowance for expected credit losses is individually assessed based on the fair value of the collateral less estimated costs of sale. The Company's collateral-dependent loans are secured by real estate. Collateral values are generally based on appraisals which are adjusted for changes in market indices. As of March 31, 2021, and December 31, 2020, the Company had $9.8 million and $10.0 million of collateral-dependent impaired loans, respectively. The collateral-dependent loans at March 31, 2021 consisted of $7.6 million in commercial real estate loans, $1.2 million in construction loans, $610,000 in multifamily loans, and $388,000 in one-to-four family residential loans. For the three months ended March 31, 2021, there was no significant deterioration or changes in the collateral securing these loans.

27

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Troubled Debt Restructured Loans

There were no loans modified in a TDR during the three months ended March 31, 2021 or 2020.

In response to the COVID-19 pandemic and its economic impact to customers, a short-term modification program that complied with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus was implemented to provide temporary payment relief to those borrowers directly impacted by COVID-19. The program allows for deferral of payments for 90 days, which may extend for an additional 90 day periods, with modifications in the form of payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment. As of March 31, 2021, the Company had 24 loan modifications (excluding PCD loans) with principal and/or interest payment deferrals on outstanding loan balances of $28.8 million. Of these 24 payment deferrals, seven were principal deferrals totaling $8.8 million, and 17 were principal and interest deferrals totaling $20.0 million. As these deferrals were current as of December 31, 2019, or the date of modification, these loans are not considered TDRs. Loans in deferment status (“COVID-19 Modified Loans”) will continue to accrue interest during the deferment period unless otherwise classified as nonperforming. COVID-19 Modified Loans are required to make escrow payments for real estate taxes and insurance, if applicable. For loans given relief of interest, the deferred interest is generally to be paid back over a period not to exceed 18 months. Principal deferrals may be brought current or recast into outstanding principal at time of rate reset or repaid at the end of the loan's contractual term. COVID-19 Modified Loan agreements generally also include covenants that prohibit distributions, bonuses, or payments of management fees to related entities until all deferred payments are made.

At March 31, 2021 and December 31, 2020, the Company had TDRs of $11.7 million and $12.1 million, respectively.

Management classifies all TDRs as loans individually evaluated for impairment. Loans individually evaluated for impairment are assessed to determine that the loan’s carrying value is not in excess of the estimated fair value of the collateral less cost to sell, if the loan is collateral-dependent, or the present value of the expected future cash flows, if the loan is not collateral-dependent. Management performs an evaluation of each impaired loan and generally obtains updated appraisals as part of the evaluation. In addition, management adjusts estimated fair values down to appropriately consider recent market conditions, our willingness to accept a lower sales price to effect a quick sale, and costs to dispose of any supporting collateral. Determining the estimated fair value of underlying collateral (and related costs to sell) can be difficult in illiquid real estate markets and is subject to significant assumptions and estimates. Management employs an independent third-party management firm that specializes in appraisal preparation and review to ascertain the reasonableness of updated appraisals. Projecting the expected cash flows under TDRs which are not collateral-dependent is inherently subjective and requires, among other things, an evaluation of the borrower’s current and projected financial condition. Actual results may be significantly different than our projections and our established allowance for loan losses on these loans, which could have a material effect on our financial results.

At March 31, 2021, there were no TDRs that were restructured during the preceding twelve months that subsequently defaulted. At March 31, 2020, there was one TDR with a balance of $27,000 that was restructured during the preceding twelve months that subsequently defaulted.

28

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Note 7 – Allowance for Credit Losses on Loans (“ACL”)

On January 1, 2021, the Company adopted the CECL standard, which requires the measurement of expected credit losses for financial assets measured at amortized cost, including loans, and certain off-balance-sheet credit exposures. As a result of the adoption of CECL, the Company recorded a $10.4 million increase to its allowance for credit losses on loans, including $6.8 million related to PCD loans. For PCD loans, the allowance for credit losses recorded is recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity.

Under the CECL standard, the Company determines the ACL on loans based upon a consideration of its historical portfolio loss experience, current borrower-specific risk characteristics, forecasts of future economic conditions, reversion period, prepayments and qualitative adjustments. The allowance is measured on a collective (loan segment) basis when similar risk characteristics exist. Loans that do not share common risk characteristics are evaluated on an individual basis and are excluded from the collective evaluation. Accrued interest on loans is excluded from the calculation of the ACL due to the Company's established non-accrual policy which results in the reversal of uncollectible accrued interest on non-accrual loans against interest income in a timely manner. Accrued interest receivable on loans held-for-investment totaled $13.2 million at March 31, 2021 and is reported in accrued interest receivable on the consolidated balance sheet.

The Company’s loan portfolio segmentation includes: multifamily, commercial real estate, one-to-four family residential mortgage, home equity and lines of credit, commercial and industrial, construction and other consumer loans.

Allowance for Collectively Evaluated Loans Held-for-Investment

In estimating the quantitative component of the allowance on a collective basis, the Company uses a risk rating migration model which calculates an expected life of loan loss percentage for each loan by generating probability of default and loss given default metrics. The metrics are based on the migration of loans from performing to loss by credit quality rating or delinquency categories using historical life-of-loan analysis periods for each loan portfolio pool, and the severity of loss, based on the aggregate net lifetime losses incurred using the Company's own historical loss experience and comparable peer data loss history. The model's expected losses based on loss history are adjusted for qualitative factors. Among other things, these adjustments include and account for differences in: (i) changes in lending policies and procedures; (ii) changes in local, regional, national, and international economic and business conditions and developments that affect the collectability of our portfolio, including the condition of various market segments; (iii) changes in the experience, ability and depth of lending management and other relevant staff; (iv) changes in the quality of our loan review system; (v) the existence and effect of any concentrations of credit, and changes in the level of such concentrations; and (vi) the effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in our existing portfolio.

The Company utilizes a two-year reasonable and supportable forecast period after which estimated losses revert to historical loss experience immediately for the remaining life of the loan. In establishing its estimate of expected credit losses, the Company utilizes five externally-sourced forward-looking economic scenarios developed by Moody's Analytics (“Moody's”).     

Management utilizes five Moody's scenarios so as to incorporate uncertainties related to the unprecedented economic environment arising from the COVID-19 pandemic. These scenarios, which range from more benign to more severe economic outlooks, represent a ‘most likely outcome’ (the “Baseline” scenario) and four less likely scenarios referred to as the “Upside” scenarios and the “Downside” scenarios. Each scenario is assigned a weighting with a majority of the weighting placed on the Baseline scenario and lower weights placed on both the Upside and Downside scenarios. The weighting assigned by management is based on the economic outlook and available information at the reporting date. The model projects economic variables under each scenario based on detailed statistical analyses. The Company has identified and selected key variables that most closely correlated to its historical credit performance, which include: Gross domestic product, unemployment, and three collateral indices: the Commercial Property Price Index, the Commercial Property Price Apartment Index and the Case-Shiller Home Price Index.

29

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Allowance for Individually Evaluated Loans

The Company measures specific reserves for individual loans that do not share common risk characteristics with other loans, consisting of all TDRs and non-accrual loans with an outstanding balance of $500,000 or greater. Loans individually evaluated for impairment are assessed to determine that the loan’s carrying value is not in excess of the estimated fair value of the collateral less cost to sell, if the loan is collateral-dependent, or the present value of the expected future cash flows, if the loan is not collateral-dependent. Management performs an evaluation of each impaired loan and generally obtains updated appraisals as part of the evaluation. In addition, management adjusts estimated fair values down to appropriately consider recent market conditions, our willingness to accept a lower sales price to effect a quick sale, and costs to dispose of any supporting collateral. Determining the estimated fair value of underlying collateral (and related costs to sell) can be difficult in illiquid real estate markets and is subject to significant assumptions and estimates. Management employs an independent third-party management firm that specializes in appraisal preparation and review to ascertain the reasonableness of updated appraisals. Projecting the expected cash flows under troubled debt restructurings which are not collateral-dependent is inherently subjective and requires, among other things, an evaluation of the borrower’s current and projected financial condition. Actual results may be significantly different than our projections and our established allowance for credit losses on these loans, which could have a material effect on our financial results. Individually impaired loans that have no impairment losses are not considered for collective allowances described earlier. At March 31, 2021 and December 31, 2020, the specific component of the ACL for loans individually evaluated for impairment was $77,000 and $73,000, respectively.

Allowance for Credit Losses – Off-Balance Sheet Exposures

An ACL for off-balance-sheet exposures represents an estimate of expected credit losses arising from off-balance sheet exposures such as loan commitments, standby letters of credit and unused lines of credit (loans on books already). Commitments to fund unused lines of credit are agreements to lend additional funds to customers as long as there have been no violations of any of the conditions established in the agreements (original or restructured). Commitments to originate loans generally have a fixed expiration or other termination clauses, which may require payment of a fee. Since some of these loan commitments are expected to expire without being drawn upon, total commitments do not necessarily represent future cash requirements. The reserve for off-balance sheet exposures is determined using the CECL reserve factor in the related funded loan segment, adjusted for an average historical funding rate. The allowance for credit losses for off-balance sheet credit exposures is recorded in other liabilities on the consolidated balance sheets and the corresponding provision is included in other non-interest expense.

The table below summarizes the allowance for credit losses for off-balance sheet credit exposures (in thousands):

	Three Months Ended March 31, 2021
Balance at beginning of period	$	808
Impact of CECL adoption	737
Balance at January 1, 2021	1,545
Provision for credit losses	157
Balance at end of period	$	1,702

30

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following tables set forth activity in our allowance for credit losses on loans, by loan type, as of and for the three months ended March 31, 2021, and March 31, 2020 (in thousands):

	Three Months Ended March 31, 2021
	Real Estate
	Commercial (1)		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCD)		PCD		Total
Beginning balance	$	33,005	$	207	$	1,214	$	260	$	1,842	$	198	$	36,726	$	881	$	37,607
Impact of CECL adoption	(1,949)		5,233		(921)		419		947		(188)		3,541		6,812		10,353
Balance at January 1, 2021	31,056		5,440		293		679		2,789		10		40,267		7,693		47,960
Charge-offs	(21)		—		—		—		—		—		(21)		(2,411)		(2,432)
Recoveries	19		1		—		—		21		2		43		—		43
Provisions (credit)	(2,172)		(269)		(24)		(36)		130		(3)		(2,374)		—		(2,374)
Ending balance	$	28,882	$	5,172	$	269	$	643	$	2,940	$	9	$	37,915	$	5,282	$	43,197

(1) Commercial includes commercial real estate loans collateralized by owner-occupied, non-owner occupied, and multifamily properties.

	Three Months Ended March 31, 2020
	Real Estate
	Commercial		One-to-Four Family		Construction and Land		Multifamily		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCI)		PCI		Total
Allowance for loan losses:
Beginning balance	$	4,891	$	180	$	536	$	20,203	$	317	$	1,640	$	151	$	27,918	$	789	$	28,707
Charge-offs	(433)		—		—		—		—		(37)		—		(470)		—		(470)
Recoveries	375		1		—		—		1		2		1		380		—		380
Provisions (credit)	611		131		135		6,686		256		430		(66)		8,183		—		8,183
Ending balance	$	5,444	$	312	$	671	$	26,889	$	574	$	2,035	$	86	$	36,011	$	789	$	36,800

31

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following tables detail the amount of loans receivable held-for-investment, net of deferred loan fees and costs, that are evaluated, individually and collectively, for impairment, and the related portion of the allowance for loan losses that is allocated to each loan portfolio segment, at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
	Real Estate
	Commercial (1)		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCD)		PCD		Total
Allowance for credit losses on loans:
Ending balance: individually evaluated for impairment	$	69	$	4	$	—	$	2	$	2	$	—	$	77	$	—	$	77
Ending balance: collectively evaluated for impairment	28,813		5,168		269		641		2,938		9		37,838		5,282		43,120
Loans, net:
Ending balance	3,305,522		202,948		77,206		93,118		234,518		1,658		3,914,970		18,045		3,933,015
Ending balance: individually evaluated for impairment	9,839		1,634		1,150		45		16		—		12,684		—		12,684
Ending balance: collectively evaluated for impairment	3,295,683		201,314		76,056		93,073		66,628		1,658		3,734,412		18,045		3,752,457
PPP loans not evaluated for impairment (2)	—		—		—		—		167,874		—		167,874		—		167,874

	December 31, 2020
	Real Estate
	Commercial		One-to-Four Family		Construction and Land		Multifamily		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCI)		PCI		Total
Allowance for credit losses on loans:
Ending balance: individually evaluated for impairment	$	66	$	—	$	—	$	—	$	3	$	4	$	—	$	73	$	—	$	73
Ending balance: collectively evaluated for impairment	5,944		207		1,214		26,995		257		1,838		198		36,653		881		37,534
Loans, net:
Ending balance	717,566		212,222		74,351		2,512,934		93,137		191,481		3,029		3,804,720		18,518		3,823,238
Ending balance: individually evaluated for impairment	10,650		1,903		—		626		47		16		—		13,242		—		13,242
Ending balance: collectively evaluated for impairment	706,916		210,319		74,351		2,512,308		93,090		64,930		3,029		3,664,943		18,518		3,683,461
PPP loans not evaluated for impairment (2)	—		—		—		—		—		126,535		—		126,535		—		126,535

(1) Commercial includes commercial real estate loans collateralized by owner-occupied, non-owner occupied, and multifamily properties.

(2) PPP loans are guaranteed by the SBA and therefore excluded from the allowance for loan losses.

32

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Note 8 – Deposits

Deposit account balances are summarized as follows (in thousands):

	March 31, 2021		December 31, 2020
Non-interest-bearing checking	$	771,432	$	695,831
NOW and interest-bearing checking	918,367		905,208
Savings and money market	1,815,727		1,953,885
Certificates of deposit	630,190		521,627
Total deposits	$	4,135,716	$	4,076,551

Interest expense on deposit accounts is summarized for the periods indicated (in thousands):

	Three Months Ended March 31,
	2021		2020
NOW and interest-bearing checking, savings, and money market	$	932	$	4,073
Certificates of deposit	938		5,206
Total interest expense on deposit accounts	$	1,870	$	9,279

Note 9 – Equity Incentive Plans

The following table is a summary of the Company’s stock options outstanding as of March 31, 2021, and changes therein during the three months then ended.

	Number of Stock Options	Weighted Average Grant Date Fair Value		Weighted Average Exercise Price		Weighted Average Contractual Life (years)
Outstanding - December 31, 2020	2,214,193	$	4.01	$	13.94	3.96
Forfeited	(41,090)	3.96		13.62		—
Exercised	(54,990)	4.06		14.69		—
Outstanding - March 31, 2021	2,118,113	4.01		13.92		3.71
Exercisable - March 31, 2021	2,101,034	4.00		13.91		3.70

 Expected future stock option expense related to the non-vested options outstanding as of March 31, 2021, is $25,000 over a weighted average period of 0.6 years.

On January 29, 2021, the Company granted to directors and employees, under the 2019 EIP, 147,315 restricted stock units with a total grant-date fair value of $1.8 million. Of these grants, 32,769 vest one year from the date of grant and 114,546 vest in equal installments over a five-year period beginning one year from the date of grant. The Company also issued 29,615 performance-based restricted stock units to its executive officers with a total grant date fair value of $366,041. Vesting of the performance-based restricted stock units will be based on achievement of certain levels of Core Return on Average Assets and will cliff-vest after a three-year measurement period ended January 29, 2024, based on the Company's performance relative to a peer group as determined by the Compensation Committee of the Board. At the end of the performance period, the number of actual shares to be awarded may vary between 0% and 225% of target amounts.

The following is a summary of the status of the Company’s restricted stock awards as of March 31, 2021, and changes therein during the three months then ended.

	Number of Shares Awarded	Weighted Average Grant Date Fair Value
Non-vested at December 31, 2020	104,010	$	15.91
Granted	176,930	12.59
Vested	(38,470)	15.81
Forfeited	(4,022)	15.81
Non-vested at March 31, 2021	238,448	13.46

33

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Expected future stock award expense related to the non-vested restricted share awards as of March 31, 2021, is $2.6 million over a weighted average period of 3.3 years.

During the three months ended March 31, 2021, and March 31, 2020, the Company recorded $243,000 and $448,000, respectively, of stock-based compensation related to the above plans.

Note 10 – Fair Value Measurements

The following tables present the assets reported on the consolidated balance sheets at their estimated fair value as of March 31, 2021, and December 31, 2020, by level within the fair value hierarchy as required by the Fair Value Measurements and Disclosures Topic of the FASB ASC. Financial assets and liabilities are classified in their entirety based on the level of input that is significant to the fair value measurement. The fair value hierarchy is as follows:

•Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

•Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (for example, interest rates, volatilities, prepayment speeds, loss severities, credit risks and default rates) or inputs that are derived principally from or corroborated by observable market data by correlations or other means.

•Level 3 Inputs – Significant unobservable inputs that reflect the Company’s own assumptions that market participants would use in pricing the assets or liabilities.

The methods of determining the fair value of assets and liabilities presented in this note are consistent with our methodologies disclosed in Note 15 to the Consolidated Financial Statements of the Company’s 2020 Annual Report on Form 10-K.

34

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

	Fair Value Measurements at March 31, 2021 Using:
	Carrying Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in thousands)
Measured on a recurring basis:
Assets:
Investment securities:
Debt securities available-for-sale:
U.S. Government agency	$	2,690	$	—	$	2,690	$	—
Mortgage-backed securities:
Pass-through certificates:
GSE	253,563		—		253,563		—
REMICs:
GSE	825,693		—		825,693		—
	1,079,256		—		1,079,256		—
Other debt securities:
Municipal bonds	103		—		103		—
Corporate bonds	124,442		—		124,442		—
Asset-backed securities	747		—		747		—
	125,292		—		125,292		—
Total debt securities available-for-sale	1,207,238		—		1,207,238		—
Trading securities	12,142		12,142		—		—
Equity securities	473		473		—		—
Total	$	1,219,853	$	12,615	$	1,207,238	$	—
Measured on a non-recurring basis:
Assets:
Loans individually evaluated for impairment:
Real estate loans:
Commercial real estate	$	3,871	$	—	$	—	$	3,871
One-to-four family residential mortgage	540		—		—		540
Multifamily	12		—		—		12
Home equity and lines of credit	29		—		—		29
Total individually evaluated real estate loans	4,452		—		—		4,452
Commercial and industrial loans	14		—		—		14
Other real estate owned	100		—		—		100
Total	$	4,566	$	—	$	—	$	4,566

35

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

	Fair Value Measurements at December 31, 2020 Using:
	Carrying Value		Quoted Prices in Active Markets for Identical Assets  (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs  (Level 3)
	(in thousands)
Measured on a recurring basis:
Assets:
Investment securities:
Debt securities available-for-sale:
U.S. Government agency securities	$	3,158	$	—	$	3,158	$	—
Mortgage-backed securities:
Pass-through certificates:
GSE	281,343		—		281,343		—
REMICs:
GSE	890,965		—		890,965		—
Non-GSE	4		—		4		—
	1,172,312		—		1,172,312		—
Other debt securities:
Municipal bonds	123		—		123		—
Corporate bonds	88,418		—		88,418		—
Asset-backed securities	794		—		794		—
	89,335		—		89,335		—
Total debt securities available-for-sale	1,264,805		—		1,264,805		—
Trading securities	12,291		12,291		—		—
Equity securities	253		253		—		—
Total	$	1,277,349	$	12,544	$	1,264,805	$	—
Measured on a non-recurring basis:
Assets:
Impaired loans:
Real estate loans:
Commercial real estate	$	5,268	$	—	$	—	$	5,268
Multifamily	16		—		—		16
Home equity and lines of credit	28		—		—		28
Total impaired real estate loans	5,312		—		—		5,312
Commercial and industrial loans	13		—		—		13
Total	$	5,325	$	—	$	—	$	5,325

The following table presents qualitative information for Level 3 assets measured at fair value on a non-recurring basis at March 31, 2021, and December 31, 2020 (dollars in thousands):

	Fair Value				Valuation Methodology	Unobservable Inputs	Range of Inputs
	March 31, 2021		December 31, 2020				March 31, 2021	December 31, 2020
Individually evaluated loans	$	4,466	$	5,325	Appraisals	Discount for costs to sell	7.0%	7.0%
						Discount for quick sale	10.0%	10.0%
					Discounted cash flows	Interest rates	4.88% to 6.25%	4.88% to 6.25%
Other real estate owned	100		—		Appraisals	Discount for costs to sell	7.0%	N/A

36

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The valuation techniques described below were used to measure fair value of financial instruments in the tables below on a recurring basis and a non-recurring basis as of March 31, 2021, and December 31, 2020.

Debt Securities Available for Sale: The estimated fair values for mortgage-backed securities, corporate, and other debt securities are obtained from an independent nationally recognized third-party pricing service. The estimated fair values are derived primarily from cash flow models, which include assumptions for interest rates, credit losses, and prepayment speeds. Broker/dealer quotes are utilized as well, when such quotes are available and deemed representative of the market. The significant inputs utilized in the cash flow models are based on market data obtained from sources independent of the Company (Observable Inputs), and are therefore classified as Level 2 within the fair value hierarchy. There were no transfers of securities between Level 1 and Level 2 during the three months ended March 31, 2021 or March 31, 2020.     

Trading Securities: Fair values are derived from quoted market prices in active markets. The assets consist of publicly traded mutual funds.

Equity Securities: Fair values of equity securities consisting of publicly traded mutual funds are derived from quoted market prices in active markets.

Loans individually evaluated for impairment: At March 31, 2021, and December 31, 2020, the Company had loans individually evaluated for impairment (excluding PCD/PCI loans) with outstanding principal balances of $6.5 million and $7.4 million, respectively, which were recorded at their estimated fair value of $4.5 million and $5.3 million, respectively. The Company recorded a net increase in the specific reserve for impaired loans of $3,000 for the three months ended March 31, 2021 and a net decrease in the specific reserve for impaired loans of $79,000 for the three months ended March 31, 2020. Net charge-offs of $2.4 million and $90,000 were recorded for the three months ended March 31, 2021 and March 31, 2020, respectively, utilizing Level 3 inputs. For purposes of estimating the fair value of impaired loans, management utilizes independent appraisals, if the loan is collateral-dependent, adjusted downward by management, as necessary, for changes in relevant valuation factors subsequent to the appraisal date, or the present value of expected future cash flows for non-collateral dependent loans and TDRs.

Other Real Estate Owned: At March 31, 2021, the Company had assets acquired through foreclosure

of $100,000, recorded at estimated fair value, less estimated selling costs when acquired, thus establishing a new cost basis. Estimated fair value is generally based on independent appraisals. These appraisals include adjustments to comparable assets based on the appraisers’ market knowledge and experience, and are considered Level 3 inputs. When an asset is acquired, the excess of the loan balance over fair value, less estimated selling costs, is charged to the allowance for loan losses. If the estimated fair value of the asset declines, a write-down is recorded through non-interest expense. The valuation of foreclosed assets is subjective in nature and may be adjusted in the future because of changes in the economic conditions.

In addition, the Company may be required, from time to time, to measure the fair value of certain other financial assets on a nonrecurring basis in accordance with U.S. GAAP. The adjustments to fair value usually result from the application of lower-of-cost-or-market accounting or write downs of individual assets.

Fair Value of Financial Instruments:

The FASB ASC Topic for Financial Instruments requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring or non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. The following methods and assumptions were used to estimate the fair value of other financial assets and financial liabilities not already discussed above:

(a)     Cash and Cash Equivalents

Cash and cash equivalents are short-term in nature with original maturities of three months or less; the carrying amount approximates fair value. Certificates of deposit having original terms of six-months or less; the carrying value generally approximates fair value. Certificates of deposit with an original maturity of six months or greater; the fair value is derived from discounted cash flows.

37

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

(b)    Debt Securities (Held-to-Maturity)

The estimated fair values for substantially all of our securities are obtained from an independent nationally recognized pricing service. The independent pricing service utilizes market prices of same or similar securities whenever such prices are available. Prices involving distressed sellers are not utilized in determining fair value. Where necessary, the independent third-party pricing service estimates fair value using models employing techniques such as discounted cash flow analysis. The assumptions used in these models typically include assumptions for interest rates, credit losses, and prepayments, utilizing market observable data where available.

(c)    Investments in Equity Securities at Net Asset Value Per Share

The Company uses net asset value as a practical expedient to record its investment in a private SBA Loan Fund since the shares in the fund are not publicly traded, do not have a readily determinable fair value and the net asset value per share is calculated in a manner consistent with the measurement principles of an investment company.

(d)    Federal Home Loan Bank of New York Stock

The fair value for Federal Home Loan Bank of New York ("FHLBNY") stock is its carrying value, since this is the amount for which it could be redeemed and there is no active market for this stock.

(e)    Loans (Held-for-Investment)

Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as originated and purchased, and further segregated by residential mortgage, construction, land, multifamily, commercial and consumer. Each loan category is further segmented into amortizing and non-amortizing and fixed and adjustable rate interest terms and by performing and nonperforming categories. The fair value of loans is estimated using a discounted cash flow analysis. The discount rates used to determine fair value use interest rate spreads that reflect factors such as liquidity, credit, and nonperformance risk of the loans.

(f)    Loans (Held-for-Sale)

Held-for-sale loans are carried at the lower of aggregate cost or estimated fair value, less costs to sell, and therefore fair value is equal to carrying value.

(g)    Deposits

The fair value of deposits with no stated maturity, such as non-interest bearing demand deposits, savings, NOW and money market accounts, is equal to the amount payable on demand. The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities.

(h)    Commitments to Extend Credit and Standby Letters of Credit

The fair value of commitments to extend credit and standby letters of credit is estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value of off-balance sheet commitments is insignificant and therefore not included in the following table.

38

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

 (i)    Borrowings

The fair value of borrowed funds is estimated by discounting future cash flows based on rates currently available for debt with similar terms and remaining maturity.

(j)    Advance Payments by Borrowers for Taxes and Insurance

Advance payments by borrowers for taxes and insurance have no stated maturity; the fair value is equal to the amount currently payable.

(k)    Derivatives

The fair value of the Company's derivatives is determined using discounted cash flow analysis using observable market-based inputs, which are considered Level 2 inputs.

The estimated fair value of the Company’s financial instruments at March 31, 2021, and December 31, 2020, is presented in the following tables (in thousands):

	March 31, 2021
			Estimated Fair Value
	Carrying Value		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	127,570	$	127,570	$	—	$	—	$	127,570
Trading securities	12,142		12,142		—		—		12,142
Debt securities available-for-sale	1,207,238		—		1,207,238		—		1,207,238
Debt securities held-to-maturity	6,913		—		7,241		—		7,241
Equity securities	473		473		—		—		473
FHLBNY stock, at cost	28,641		—		28,641		—		28,641
Net loans held-for-investment	3,889,818		—		—		3,959,088		3,959,088
Derivative assets	1,219		—		1,219		—		1,219
Financial liabilities:
Deposits	$	4,135,716	$	—	$	4,140,621	$	—	$	4,140,621
Borrowed funds	592,170		—		604,460		—		604,460
Advance payments by borrowers for taxes and insurance	24,027		—		24,027		—		24,027
Derivative liabilities	1,220		—		1,220		—		1,220

39

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

	December 31, 2020
			Estimated Fair Value
	Carrying Value		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	87,544	$	87,544	$	—	$	—	$	87,544
Trading securities	12,291		12,291		—		—		12,291
Debt securities available-for-sale	1,264,805		—		1,264,805		—		1,264,805
Debt securities held-to-maturity	7,234		—		7,574		—		7,574
Equity securities	253		253		—		—		253
FHLBNY stock, at cost	28,641		—		28,641		—		28,641
Loans held-for-sale	19,895		—		—		19,895		19,895
Net loans held-for-investment	3,785,631		—		—		3,842,054		3,842,054
Derivative assets	1,498		—		1,498		—		1,498
Financial liabilities:
Deposits	$	4,076,551	$	—	$	4,082,538	$	—	$	4,082,538
Borrowed funds	591,789		—		609,900		—		609,900
Advance payments by borrowers for taxes and insurance	19,677		—		19,677		—		19,677
Derivative liabilities	1,502		—		1,502		—		1,502

Limitations

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected losses, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on-and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in the estimates.

Note 11 – Earnings Per Share

Basic earnings per share is computed by dividing net income available to common stockholders by the weighted average number of shares outstanding during the period. For purposes of calculating basic earnings per share, weighted average common shares outstanding excludes unallocated employee stock ownership plan (“ESOP”) shares that have not been committed for release and unvested restricted stock.

Diluted earnings per share is computed using the same method as basic earnings per share, but reflects the potential dilution that could occur if stock options and unvested shares of restricted stock were exercised and converted into common stock. These potentially dilutive shares would then be included in the weighted average number of shares outstanding for the period using the treasury stock method. When applying the treasury stock method we added the assumed proceeds from option exercises and the average unamortized compensation costs related to unvested shares of restricted stock and stock options. We then divided this sum by our average stock price for the period to calculate assumed shares repurchased. The excess of the number of shares issuable over the number of shares assumed to be repurchased is added to basic weighted average common shares to calculate diluted earnings per share.

40

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The following is a summary of the Company’s earnings per share calculations and reconciliation of basic to diluted earnings per share for the periods indicated (in thousands, except per share data):

	Three Months Ended March 31,
	2021		2020
Net income available to common stockholders	$	18,677	$	4,551
Weighted average shares outstanding-basic	49,528,419		46,791,768
Effect of non-vested restricted stock and stock options outstanding	105,225		191,698
Weighted average shares outstanding-diluted	49,633,644		46,983,466
Earnings per share-basic	$	0.38	$	0.10
Earnings per share-diluted	$	0.38	$	0.10
Anti-dilutive shares	1,002,377		1,001,828

41

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Note 12 – Leases

The Company’s leases primarily relate to real estate property for branches and office space with terms extending from three months up to 34.3 years. At March 31, 2021, all of the Company's leases are classified as operating leases, which are required to be recognized on the consolidated statements of financial condition as a right-of-use asset and a corresponding lease liability.

The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use assets and operating lease liabilities on the consolidated balance sheets. Right-of-use assets represent the right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recorded at the present value of lease payments over the lease term. As the Company's leases do not provide an implicit rate, the Company uses its incremental borrowing rate, at lease inception, over a similar term in determining the present value of lease payments. Certain leases include options to renew, with one or more renewal terms ranging from five to ten years. If the exercise of a renewal option is considered to be reasonably certain, the Company includes the extended term in the calculation of the right-of-use asset and lease liability.

At March 31, 2021, the Company’s operating lease right-of-use assets and operating lease liabilities included on the consolidated balance sheet were $35.7 million and $42.1 million, respectively. At December 31, 2020, the Company’s operating lease right-of-use assets and operating lease liabilities included on the consolidated balance sheet were $36.7 million and $42.7 million, respectively. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are recognized as incurred. Variable lease payments include common area maintenance charges, real estate taxes, repairs and maintenance costs and utilities. Operating and variable lease expenses are recorded in occupancy expense on the consolidated statements of comprehensive income.

Supplemental lease information at or for the three months ended March 31, 2021, and March 31, 2020 is as follows (dollars in thousands):

	Three Months Ended March 31,
	2021			2020
Operating lease cost	$	1,455		$	1,439
Variable lease cost	1,235			544
Net lease cost	$	2,690		$	1,983
Cash paid for amounts included in measurement of operating lease liabilities	$	1,708		$	1,545
Right-of-use assets obtained in exchange for new operating lease liabilities	$	—		$	3,028
Weighted average remaining lease term	12.26 years			12.71 years
Weighted average discount rate	3.60		%	3.59		%

The following table summarizes lease payment obligations for each of the next five years and thereafter in addition to a reconcilement to the Company's current lease liability (in thousands):

Year	Amount
2021	$	4,669
2022	5,550
2023	5,504
2024	5,067
2025	4,710
Thereafter	28,196
Total lease payments	53,696
Less: imputed interest	11,629
Present value of lease liabilities	$	42,067

As of March 31, 2021, the Company had not entered into any leases that have not yet commenced.

42

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

Note 13 – Revenue Recognition

The Company records revenue from contracts with customers in accordance with ASU 2014-09, Revenue from Contracts with Customers (“Topic 606”). The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities, which comprise the majority of the Company’s revenue.

The Company’s revenue streams that are within the scope of Topic 606 include service charges on deposit accounts, ATM and card interchange fees, investment services fees, and other miscellaneous income. Fees and service charges for customer services include: (i) service charges on deposit accounts, including account maintenance fees, overdraft fees, insufficient funds fees, wire fees, and other deposit related fees; (ii) ATM and card interchange fees, which include fees generated when a Bank cardholder uses a non-Bank ATM or a non-Bank cardholder uses a Bank ATM, and fees earned whenever the Bank's debit cards are processed through card payment networks such as Visa; and (iii) investment services fees earned through partnering with a third party investment and brokerage service firm to provide insurance and investment products to customers. The Company's performance obligation for fees and service charges is satisfied and related revenue recognized immediately or in the month of performance of services. For the three months ended March 31, 2021, other income primarily includes rental income from subleasing one of the Company's branches to a third party and gains on the sale or payoff of loans. For the three months ended March 31, 2020, other income primarily includes rental income from subleasing one of the Company's branches to a third party. Other income is recognized at the time the transaction occurs.

The following table summarizes non-interest income for the periods indicated (in thousands):

	Three Months Ended March 31,
	2021		2020
Fees and service charges for customer services:
Service charges	$	720	$	753
ATM and card interchange fees	399		304
Investment fees	78		63
Total fees and service charges for customer services	1,197		1,120
Income on bank-owned life insurance (1)	848		876
Gains (losses) on available-for-sale debt securities, net (1)	97		(13)
Gains (losses) on trading securities, net (1)	364		(1,992)
Swap income (1)	—		76
Other	130		41
Total non-interest income	$	2,636	$	108

(1) Not in scope of Topic 606

Note 14 – Derivatives

The Company has interest rate derivatives resulting from a service provided to certain qualified borrowers in a loan-related transaction and, therefore, are not used to manage interest rate risk in the Company’s assets or liabilities. The interest rate swap agreement which the Company executes with the commercial borrower is collateralized by the borrower’s commercial real estate financed by the Company. The collateral exceeds the maximum potential amount of future payments under the credit derivative. As these interest rate swaps do not meet the hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings.

At March 31, 2021, the Company had seven interest rate swaps with a notional amount of $38.9 million. At December 31, 2020, the Company had seven interest rate swaps with a notional amount of $39.2 million. For the three months ended March 31, 2021 and March 31, 2020, the Company recorded net fee income of $0 and $76,000, respectively.

43

NORTHFIELD BANCORP, INC.

Notes to Unaudited Consolidated Financial Statements - (Continued)

The table below presents the fair value of the derivatives as well as their location on the consolidated balance sheets (in thousands):

	Fair Value
Balance Sheet Location	March 31, 2021		December 31, 2020
Other assets	$	1,219	$	1,498
Other liabilities	1,220		1,502

Note 15 – Recent Accounting Pronouncements Adopted

In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): “Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). This guidance was subsequently amended by ASU No. 2019-04, “Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments”; ASU No. 2019-05, “Financial Instruments-Credit Losses (Topic 326): Targeted Transition Relief”; and ASU No. 2019-11, “Codification Improvements to Topic 326, Financial Instruments-Credit Losses”. ASU No. 2016-13 and its subsequent updates are collectively known as “CECL”. CECL replaces the current incurred loss impairment model that recognizes losses when a probable threshold is met with a requirement to recognize lifetime expected credit losses immediately when a financial asset is originated or purchased. For available-for-sale debt securities where fair value is less than cost, credit-related impairment would be recognized in an allowance for credit losses and adjusted in each subsequent period for changes in credit risk. CECL also expands the disclosure requirements regarding an entity’s assumptions, models, and methods for estimating the allowance for credit losses.

ASU 2016-13 and its related amendments were initially effective for financial statements for fiscal years and interim periods beginning after December 15, 2019. The Company elected to defer the adoption of the CECL methodology permitted by the CARES Act, signed into law on March 27, 2020, which provided financial institutions with the option to defer adoption of ASU 2016-13 until the earlier of the end of the pandemic or December 31, 2020. This relief was further extended by the Consolidations Appropriations Act enacted on December 27, 2020, to the earlier of the first day of an entity's fiscal year after the date the national emergency terminates or January 1, 2022. The Company adopted ASU 2016-13 and its related amendments on January 1, 2021, using a modified retrospective approach. Our implementation process included: assessment and documentation of governance and reporting processes and related internal controls; model development, documentation and validation; and the incorporation of qualitative adjustments for model limitations, among other things. ASU 2016-13 lists several credit loss methods that are acceptable such as a discounted cash flow method, loss-rate method and probability of default/loss given default (“PD/LGD”) method. The Company utilizes the PD/LGD methodology to estimate its allowance for loan losses.

At adoption, the Company recorded an $11.1 million increase to its allowance for credit losses, including reserves of $10.4 million related to loans and $737,000 related to unfunded credit commitments. Of the $10.4 million increase in loan reserves, $6.8 million represents PCD loan-related reserves which were recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity. The non-PCD loan related increase to the allowance for credit losses of $4.3 million, including the reserves for unfunded loan commitments, was offset in shareholders' equity and deferred tax assets. For further details on the adoption of CECL see Note 6 - Loans and Note 7 - Allowance for Credit Losses on Loans.

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ITEM 2.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Cautionary Statement Regarding Forward-Looking Statements

This Quarterly Report contains certain “forward-looking statements,” which can be identified by the use of such words as “estimate,” “project,” “believe,” “intend,” “anticipate,” “plan,” “seek,” “expect,” “annualized,” “could,” “may,” “should,” “will,” and words of similar meaning. These forward-looking statements include, but are not limited to:

•statements of our goals, intentions, and expectations;

•statements regarding our business plans, prospects, growth and operating strategies;

•statements regarding the quality of our loan and investment portfolios; and

•estimates of our risks and future costs and benefits. 

These forward-looking statements are based on the current beliefs and expectations of our management and are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are beyond our control. In addition, these forward-looking statements are subject to assumptions with respect to future business strategies and decisions that are subject to change. 

The following factors, among others, could cause actual results to differ materially from the anticipated results or other expectations expressed in the forward-looking statements:   

•the disruption to local, regional, national and global economic activity caused by infectious disease outbreaks, including the outbreak of COVID-19, and the significant impact that such outbreaks may have on our growth, operations, earnings and asset quality;

•general economic conditions, either nationally or in our market areas, including employment prospects, real estate values and conditions, that are worse than expected;

•the effects of any civil unrest;

•competition among depository and other financial institutions;

•inflation and changes in the interest rate environment that reduce our margins and yields or reduce the fair value of financial instruments;

•adverse changes in the securities or credit markets;

•changes in laws, tax policies, or government regulations or policies affecting financial institutions, including changes in regulatory fees and capital requirements;

•our ability to enter new markets successfully and capitalize on growth opportunities;

•our ability to access cost-effective funding;

•our ability to successfully integrate acquired entities;

•changes in consumer demand, spending, borrowing and savings habits;

•changes in accounting policies and practices, as may be adopted by the bank regulatory agencies, the Financial Accounting Standards Board (the "FASB"), the Securities and Exchange Commission (the "SEC"), or the Public Company Accounting Oversight Board;

•cyber attacks, computer viruses and other technological risks that may breach the security of our websites or other systems to obtain unauthorized access to confidential information and destroy data or disable our systems;

•technological changes that may be more difficult or expensive than expected;

•changes in our organization, compensation, and benefit plans;

•our ability to retain key employees;

•changes in the level of government support for housing finance;

•changes in monetary or fiscal policies of the U.S. Government, including policies of the U.S. Treasury and the Federal Reserve Board ( the "FRB");

•the ability of third-party providers to perform their obligations to us;

•the ability of the U.S. Government to manage federal debt limits;

•the effects of any U.S. Government shutdowns;

•significant increases in our loan losses, including increases that may result from the new accounting guidance known as the current expected credit loss (“CECL”) model which may increase the required level of our allowance for loan losses after adoption effective January 1, 2021; and

•changes in the financial condition, results of operations, or future prospects of issuers of securities that we own.

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Given the ongoing and dynamic nature of current economic circumstances, it is difficult to predict the full impact of the COVID-19 outbreak on our business. The extent of such impact will depend on future developments, which are highly uncertain, including when the coronavirus can be fully controlled and abated and whether the gradual reopening of businesses will result in a meaningful increase in economic activity. As a result of the COVID-19 pandemic and the related adverse local and national economic consequences, we could be subject to any of the following risks, any of which could have a material, adverse effect on our business, financial condition, liquidity, and results of operations:

•demand for our products and services may decline, making it difficult to execute on our strategic initiatives related to growing assets and earnings;

•if the economy is unable to fully reopen, and increased levels of unemployment continue for an extended period of time, loan delinquencies, problem assets, and foreclosures may increase, resulting in increased charge-offs and reduced income;

•a worsening of business and economic conditions or a downturn in the financial markets could result in an impairment of certain intangible assets, such as goodwill or our servicing assets;

•litigation, regulatory enforcement risk and reputation risk regarding our participation in the Paycheck Protection Program (“PPP”) and the risk that the Small Business Administration (the “SBA”) may not fund some or all PPP loan guaranties;

•disruptions in the businesses or the unavailability of the services of third parties we use in our operations such as property appraisers, loan servicers, providers of electronic payment and settlement systems, and local and federal government agencies and courthouses, could negatively affect our operations;

•collateral for loans, especially real estate, may decline in value, which could cause loan losses to increase;

•our allowance for loan losses may have to be increased if borrowers experience financial difficulties beyond forbearance periods, which will adversely affect our net income;

•the net worth and liquidity of loan guarantors may decline, impairing their ability to honor commitments to us;

•as the result of the decline in the FRB's target federal funds rate, the yield on our assets may decline to a greater extent than the decline in our cost of interest-bearing liabilities, reducing our net interest margin and spread and reducing net income;

•a material decrease in net income or a net loss over several quarters could result in a decrease or elimination of our quarterly cash dividend;

•potential goodwill impairment charges if acquired assets and operations are adversely affected and remain at reduced levels;

•our cyber security risks are increased to the extent we have an increase in the number of employees working remotely;

•Federal Deposit Insurance Corporation (“FDIC”) premiums may increase if the agency experience additional resolution costs;

•Internal controls as designed may not prove effective, to the extent procedures are modified as a result of remote work locations; and

•the unanticipated loss or unavailability of key employees due to the outbreak, which could harm our ability to operate our business or execute our business strategy, especially as we may not be successful in finding and integrating suitable successors.

Because of these and other uncertainties, our actual future results may be materially different from the results indicated by these forward-looking statements. Accordingly, you should not place undue reliance on such statements. Except as required by law, we disclaim any intention or obligation to update or revise any forward-looking statements after the date of this Quarterly Report on Form 10-Q, whether as a result of new information, future events or otherwise.

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Critical Accounting Policies

Note 1 to the Company’s Audited Consolidated Financial Statements for the year ended December 31, 2020, included in the Company’s Annual Report on Form 10-K, as supplemented by this report, contains a summary of significant accounting policies. Various elements of these accounting policies, by their nature, are inherently subject to estimation techniques, valuation assumptions and other subjective assessments. Certain assets are carried in the consolidated balance sheets at estimated fair value or the lower of cost or estimated fair value. Policies with respect to the methodologies used to determine the allowance for credit losses on loans, estimated cash flows of our purchased credit-deteriorated (“PCD”, or, previously, purchased credit-impaired “PCI”) loans, and judgments regarding the valuation allowance against deferred tax assets are the most critical accounting policies because they are important to the presentation of the Company’s financial condition and results of operations, involve a higher degree of complexity, and require management to make subjective judgments which often require assumptions or estimates about highly uncertain matters. The use of different judgments, assumptions, and estimates could result in material differences in the results of operations or financial condition. These critical accounting policies and their application are reviewed periodically and, at least annually, with the Audit Committee of the Board of Directors. 

At March 31, 2021, we identified our policy on the allowance for credit losses to be a critical accounting policy because management has to make subjective and/or complex judgments about matters that are inherently uncertain and because it is likely that materially different amounts would be reported under different conditions or using different assumptions. On January 1, 2021, we adopted new accounting guidance which requires entities to estimate and recognize an allowance for lifetime expected credit losses for loans, unfunded credit commitments and held-to-maturity debt securities measured at amortized cost. Previously, an allowance for credit losses on loans was recognized based on probable incurred losses. See Notes 6, 7 and 15 to the consolidated financial statements for further discussion of our accounting policies and methodologies for establishing the allowance for credit losses.

The accounting estimates relating to the allowance for credit losses remain "critical accounting estimates" for the following reasons:

•Changes in the provision for credit losses can materially affect our financial results;

• Estimates relating to the allowance for credit losses require us to utilize a reasonable and supportable forecast period based upon forward-looking economic scenarios in order to estimate probability of default and loss given default rates which our CECL methodology encompasses;

• The allowance for credit losses is influenced by factors outside of our control such as industry and business trends, as well as economic conditions such as trends in housing prices, interest rates, gross domestic product, inflation, and unemployment; and

• Judgment is required to determine whether the models used to generate the allowance for credit losses produce an estimate that is sufficient to encompass the current view of lifetime expected credit losses.

Our estimation process is subject to risks and uncertainties, including a reliance on historical loss and trend information that may not be representative of current conditions and indicative of future performance. Changes in such estimates could significantly impact our allowance and provision for credit losses. Accordingly, our actual credit loss experience may not be in line with our expectations.

For a further discussion of the critical accounting policies of the Company, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.

Overview

This overview highlights selected information and may not contain all the information that is important to you in understanding our performance during the period. For a more complete understanding of trends, events, commitments, uncertainties, liquidity, capital resources, and critical accounting estimates, you should read this entire document carefully, as well as our Annual Report on Form 10-K for the year ended December 31, 2020.

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Net income was $18.7 million for the three months ended March 31, 2021, as compared to $4.6 million for the three months ended March 31, 2020. Basic and diluted earnings per common share were $0.38 for the three months ended March 31, 2021, compared to basic and diluted earnings per common share of $0.10 for the three months ended March 31, 2020. For the three months ended March 31, 2021, our return on average assets was 1.36%, as compared to 0.37% for the three months ended March 31, 2020. For the three months ended March 31, 2021, our return on average stockholders’ equity was 10.03% as compared to 2.60% for the three months ended March 31, 2020. The most significant impact on our results of operations for the three months ended March 31, 2021, as compared to the prior year period was the decrease in our provision for loan losses, which decreased by $10.6 million for the three months ended March 31, 2021, to a negative provision of $2.4 million, compared to a provision of $8.2 million for the three months ended March 31, 2020. The higher provision for loan losses in the first quarter of 2020 was primarily due to increases in the qualitative factors used in determining the adequacy of the allowance for loan losses related to unemployment, loan risk rating changes and increased risks related to loans on forbearance, resulting from economic uncertainty attributable to the beginning of the COVID-19 pandemic, under the incurred loss methodology. For the three months ended March 31, 2021, the Company recorded a negative provision of $2.4 million, driven primarily by an improvement in economic forecasts for the current quarter. Earnings for the quarter ended March 31, 2021, also reflect approximately $1.9 million of accretable income related to the payoffs of PCD loans during the quarter and $1.3 million in fees related to loans originated under the PPP.

Total assets increased by $62.4 million, or 1.1%, to $5.58 billion at March 31, 2021, from $5.51 billion at December 31, 2020, primarily due to increases in cash and cash equivalents of $40.0 million or 45.7% and total loans of $89.9 million, or 2.3%. Partially offsetting these increases was a decrease in available-for-sale debt securities of $57.6 million, or 4.6%, a decrease in other assets of $3.3 million, or 12.9%, and an increase in the allowance for credit losses of $5.6 million, or 14.9%.

The Company adopted the CECL accounting standard effective January 1, 2021, and recorded an increase in the allowance for credit losses of $11.1 million, comprised of $10.4 million and $737,000, respectively, for loans and unfunded commitments, including $6.8 million related to PCD loans. For PCD loans, the allowance for credit losses recorded is recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and, therefore results in no impact to stockholders' equity. The remaining increase to the allowance for credit losses of $4.3 million was offset in stockholders' equity and deferred tax assets.

Comparison of Financial Condition at March 31, 2021, and December 31, 2020

Total assets increased $62.4 million, or 1.1%, to $5.58 billion at March 31, 2021, from $5.51 billion at December 31, 2020, primarily due to increases in cash and cash equivalents of $40.0 million or 45.7% and total loans of $89.9 million, or 2.3%. Partially offsetting these increases was a decrease in available-for-sale debt securities of $57.6 million, or 4.6%, a decrease in other assets of $3.3 million, or 12.9%, and an increase in the allowance for credit losses of $5.6 million, or 14.9%.

Cash and cash equivalents increased by $40.0 million, or 45.7%, to $127.6 million at March 31, 2021, from $87.5 million at December 31, 2020 as a result of normal fluctuations. Balances fluctuate based on the timing of receipt of security and loan repayments and the redeployment of cash into higher-yielding assets such as loans and securities, or the funding of deposit outflows or borrowing maturities.

The Company’s available-for-sale debt securities portfolio decreased by $57.6 million, or 4.6%, to $1.21 billion at March 31, 2021, from $1.26 billion at December 31, 2020. The decrease was primarily attributable to paydowns, maturities, calls, and sales. At March 31, 2021, $1.08 billion of the portfolio consisted of residential mortgage-backed securities issued or guaranteed by Fannie Mae, Freddie Mac, or Ginnie Mae. In addition, the Company held $124.4 million in corporate bonds, all of which were considered investment grade at March 31, 2021, $2.7 million in U.S. Government agency securities, $103,000 in municipal bonds, and $747,000 in other debt securities. The effective duration of the securities portfolio at March 31, 2021 was 1.17 years.

As of March 31, 2021, our non-owner occupied commercial real estate concentration (as defined by regulatory guidance issued in 2006) to total risk-based capital was approximately 488.0%. Management believes that Northfield Bank (the "Bank") has implemented appropriate risk management practices including risk assessments, board-approved underwriting policies and related procedures which include monitoring Bank portfolio performance, performing market analysis (economic and real estate), and stressing of the Bank’s commercial real estate portfolio under severe, adverse economic conditions. Although management believes the Bank has implemented appropriate policies and procedures to manage our commercial real estate concentration risk, the Bank’s regulators could require us to implement additional policies and procedures or could require us to maintain higher levels of regulatory capital, which might adversely affect our loan originations, ability to pay dividends, and profitability.

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Loans held-for-investment, net, increased $109.8 million to $3.93 billion at March 31, 2021, from $3.82 billion at December 31, 2020, primarily due to increases in multifamily real estate loans of $58.4 million, or 2.3%, to $2.57 billion at March 31, 2021, from $2.51 billion at December 31, 2020, commercial and industrial loans of $45.0 million, or 23.1%, to $239.3 million at March 31, 2021, from $194.4 million at December 31, 2020, and commercial real estate loans of $16.6 million, or 2.3% to $733.6 million at March 31, 2021, from $717.0 million at December 31, 2020.

The following tables detail our multifamily real estate originations for the three months ended March 31, 2021 and 2020 (in thousands):

For the Three Months Ended March 31, 2021
Multifamily Originations		Weighted Average Interest Rate	Weighted Average LTV Ratio	Weighted Average Months to Next Rate Change or Maturity for Fixed Rate Loans	(F)ixed or (V)ariable	Amortization Term
$	161,087	3.11%	57%	75	V	10 to 30 Years
For the Three Months Ended March 31, 2020
Multifamily Originations		Weighted Average Interest Rate	Weighted Average LTV Ratio	Weighted Average Months to Next Rate Change or Maturity for Fixed Rate Loans	(F)ixed or (V)ariable	Amortization Term
$	181,511	3.67%	60%	94	V	30 Years
1,500		4.40%	47%	180	F	15 Years
$	183,011	3.68%	60%

There were no loans held-for-sale at March 31, 2021 compared to $19.9 million at December 31, 2020. At December 31, 2020, loans held-for-sale were comprised of commercial real estate and multifamily loans, primarily accommodation loans that were modified in the form of interest and/or principal payment deferrals due to COVID-19 related hardships, and had not returned to contractual payments after 180 days of relief. The sale of these loans was completed in March 2021.

PCD loans totaled $18.0 million at March 31, 2021, and $18.5 million at December 31, 2020. Upon adoption of the CECL accounting standard on January 1, 2021, the allowance for credit losses related to PCD loans was recorded through a gross-up that increased the amortized cost-basis of PCD loans by $6.8 million with a corresponding increase to the allowance for credit losses. The decrease in the PCD loan balance at March 31, 2021, is due to 10 PCD loan sold during the quarter. The majority of the remaining PCD loan balance consists of loans acquired as part of a Federal Deposit Insurance Corporation-assisted transaction. The Company accreted interest income of $2.4 million attributable to PCD loans for the three months ended March 31, 2021, as compared to $803,000 for the three months ended March 31, 2020. The increase in income accreted for the quarter was related to the payoffs of PCD loans. PCD loans had an allowance for credit losses of approximately $5.3 million at March 31, 2021.

Bank-owned life insurance increased $847,000, or 0.5%, to $162.8 million at March 31, 2021, as compared to $161.9 million at December 31, 2020. The increase resulted from income earned on bank-owned life insurance for the three months ended March 31, 2021.  

Other assets decreased $3.3 million, or 12.9% to $22.1 million at March 31, 2021, from $25.4 million at December 31, 2020. The decrease was primarily attributable to a decrease in net deferred tax assets associated with a decrease in net unrealized gains on our debt securities available-for-sale portfolio.

Total liabilities increased $61.8 million, or 1.3%, to $4.82 billion at March 31, 2021, from $4.76 billion at December 31, 2020. The increase was primarily attributable to an increase in deposits of $59.2 million and an increase in advance payments by borrowers for taxes and insurance of $4.4 million, partially offset by a decrease in accrued expenses and other liabilities of $1.4 million.

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Deposits increased $59.2 million, or 1.5%, to $4.14 billion at March 31, 2021, as compared to $4.08 billion at December 31, 2020. The increase was attributable to increases of $88.8 million in transaction accounts, $9.7 million in savings accounts, and $108.6 million in certificates of deposit, partially offset by a decrease of $147.8 million in money market accounts.

Borrowings and securities sold under agreements to repurchase increased to $592.2 million at March 31, 2021, from $591.8 million at December 31, 2020. Management utilizes borrowings to mitigate interest rate risk, for short-term liquidity, and to a lesser extent as part of leverage strategies. 

The following is a table of term borrowing maturities (excluding overnight borrowings and floating rate advances) and the weighted average rate by year at March 31, 2021 (in thousands):

Year	Amount	Weighted Average Rate
2021	$170,000	1.98%
2022	120,000	2.29%
2023	87,500	2.89%
2024	50,000	2.47%
2025	112,500	1.48%
Thereafter	45,000	1.45%
	$585,000	2.08%

Total stockholders’ equity increased by $584,000 to $754.6 million at March 31, 2021, from $754.0 million at December 31, 2020. The increase was attributable to net income of $18.7 million for the three months ended March 31, 2021, and a $1.5 million increase in equity award activity, partially offset by an $893,000 decrease in accumulated other comprehensive income associated with unrealized gains on our debt securities available-for-sale portfolio, $5.5 million in dividend payments, and $10.1 million in stock repurchases. The Company repurchased 742,323 shares of its common stock outstanding at an average price of $13.64 for a total of $10.1 million during the first quarter of 2021, pursuant to the approved stock repurchase plans. In connection with the adoption of CECL, effective January 1, 2021, the Company recognized a cumulative effect adjustment that reduced stockholders’ equity by $3.1 million, net of tax, to establish initial allowances against credit losses on loans and off-balance sheet credit exposures.

Comparison of Operating Results for the Three Months Ended March 31, 2021 and 2020

Net income was $18.7 million and $4.6 million for the three months ended March 31, 2021 and March 31, 2020, respectively. Significant variances from the comparable prior year period are as follows: a $10.2 million increase in net interest income, a $10.6 million decrease in the provision for loan losses, a $2.5 million increase in non-interest income, a $3.9 million increase in non-interest expense, and a $5.3 million increase in income tax expense.

Interest Income. Interest income increased $2.3 million, or 5.5%, to $45.1 million for the three months ended March 31, 2021, from $42.7 million for the three months ended March 31, 2020, due to an increase in the average balance of interest-earning assets of $569.6 million, or 12.2%. The increase was due primarily to increases in average loans outstanding of $402.5 million and average mortgage-backed securities of $161.3 million and average interest earning deposits in financial institutions of $63.0 million. Partially offsetting the increase in the average balance of interest-earning assets was a 19 basis point decrease in the yields earned on interest-earning assets to 3.48% for the three months ended March 31, 2021, from 3.67% for the comparative prior year period. The decrease in earning asset yields was due to decreases in market interest rates coupled with PPP loan originations, which have lower yields than other loans. The Company accreted interest income related to its PCD loans of $2.4 million and $803,000 for the three months ended March 31, 2021, and March 31, 2020, respectively. Interest income for the three months ended March 31, 2021, included loan prepayment income of $860,000 as compared to $627,000 for the three months ended March 31, 2020.

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Interest Expense. Interest expense decreased $7.9 million, or 61.8%, to $4.9 million for the three months ended March 31, 2021, as compared to $12.8 million for the three months ended March 31, 2020. The decrease was due to a decrease in interest expense on deposits of $7.4 million, or 79.8%, as well as a decrease in interest expense on borrowings of $499,000, or 14.2%. The decrease in interest expense on deposits was attributable to a 98 basis point decrease in the cost of interest-bearing deposits to 0.22% for the three months ended March 31, 2021, partially offset by a $264.0 million, or 8.5% increase in the average balance of interest-bearing deposit accounts, due to organic deposit growth. The decrease in the cost of interest-bearing deposits was primarily due to the lower interest rate environment and a shift in the composition of the deposit portfolio towards more core deposits. The decrease in interest expense on borrowings was attributable to an $87.5 million, or 12.9%, decrease in average borrowings outstanding.

Net Interest Income.  Net interest income for the three months ended March 31, 2021, increased $10.2 million, or 34.2%, to $40.2 million, from $29.9 million for the three months ended March 31, 2020, primarily due to a $569.6 million, or 12.2%, increase in our average interest-earning assets and a 53 basis point increase in our net interest margin to 3.10% from 2.57% for the three months ended March 31, 2020. The increase in our average interest-earning assets was due to increases in average loans outstanding of $402.5 million, average mortgage-backed securities of $161.3 million, and average interest-earning deposits in financial institutions of $63.0 million, partially offset by decreases in average other securities of $54.6 million and average FHLBNY stock of $2.6 million. The increase in net interest margin was primarily due to the decrease in the cost of interest-bearing liabilities outpacing the decrease in yields on interest-earning assets. Yields on interest earning assets decreased 19 basis points to 3.48% for the three months ended March 31, 2021, from 3.67% for the three months ended March 31, 2020. The cost of interest bearing liabilities decreased by 86 basis points to 0.50% for the three months ended March 31, 2021, from 1.36% for the three months ended March 31, 2020, driven by lower cost of deposits and borrowed funds.

Provision for Loan Losses. The provision for loan losses decreased by $10.6 million to a negative provision of $2.4 million for the three months ended March 31, 2021, compared to $8.2 million for the three months ended March 31, 2020. The higher provision for loan losses in the first quarter of 2020 was primarily due to increases in the qualitative factors used in determining the adequacy of the allowance for loan losses related to unemployment, loan risk rating changes and increased risks related to loans on forbearance, resulting from economic uncertainty attributable to the beginning of the COVID-19 pandemic, under the incurred loss methodology. As discussed above, effective January 1, 2021, the Company adopted the CECL accounting standard. CECL requires the measurement of all expected credit losses over the life of financial instruments held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. In connection with the adoption of CECL, the Company recognized a cumulative effect adjustment that reduced stockholders’ equity by $3.1 million, net of tax. At adoption, the Company increased its allowance for credit losses by $11.1 million, comprised of $10.4 million and $737,000, respectively, for loans and unfunded commitments, including $6.8 million related to PCD loans. For PCD loans, the allowance for credit losses recorded is recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity. For the for three months ended March 31, 2021, the Company recorded a negative provision of $2.4 million, driven primarily by an improvement in economic forecasts for the current quarter. Net charge-offs were $2.4 million for the three months ended March 31, 2021, primarily related to PCD loans, as compared to $90,000 for the three months ended March 31, 2020.

Non-interest Income. Non-interest income increased $2.5 million to $2.6 million for the three months ended March 31, 2021, from $108,000 for the three months ended March 31, 2020, primarily due to an increase of $2.4 million in gains on trading securities, net. For the three months ended March 31, 2021, gains on trading securities were $364,000 as compared to losses of $2.0 million for the three months ended March 31, 2020. The trading portfolio is utilized to fund the Company’s deferred compensation obligation to certain employees and directors under the Company's deferred compensation plan (the “Plan”). The participants of this Plan, at their election, defer a portion of their compensation. Gains and losses on trading securities have no effect on net income since participants benefit from, and bear the full risk of, changes in the trading securities market values. Therefore, the Company records an equal and offsetting amount in compensation expense, reflecting the change in the Company’s obligations under the Plan.   

Non-interest Expense. Non-interest expense increased $3.9 million, or 24.7%, to $19.6 million for the three months ended March 31, 2021, compared to $15.7 million for the three months ended March 31, 2020. This is due primarily to a $3.2 million increase in employee compensation and benefits, $2.4 million of which is attributable to the increase in the Company's deferred compensation plan expense which as discussed above has no effect on net income, as well as increases in salary and medical benefit expenses associated with increased personnel from our acquisition of VSB Bancorp, Inc. (“Victory”) on July 1, 2020. Additionally, occupancy expense increased by $641,000, primarily attributable to higher snow removal costs.

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Income Tax Expense. The Company recorded income tax expense of $6.9 million for the three months ended March 31, 2021, compared to $1.6 million for the three months ended March 31, 2020. The effective tax rate for the three months ended March 31, 2021, was 27.1% compared to 26.3% for the three months ended March 31, 2020. The higher effective tax rate is primarily due to higher taxable income.

On April 19, 2021, the Governor of New York signed into law an increase in the tax rate from 6.5% to 7.25%. This would have increased our tax expense by approximately $45,000 if enacted in the first quarter of 2021.

The following table sets forth average balances, average yields and costs, and certain other information for the periods indicated.

	For the Three Months Ended
	March 31, 2021						March 31, 2020
	Average Outstanding Balance		Interest		Average Yield/ Rate (1)		Average Outstanding Balance		Interest		Average Yield/ Rate (1)
Interest-earning assets:
Loans (2)	$	3,873,884	$	41,277	4.32	%	$	3,471,367	$	35,337	4.09	%
Mortgage-backed securities (3)	1,116,281		2,959		1.08		955,024		5,622		2.37
Other securities (3)	101,523		424		1.69		156,074		1,024		2.64
Federal Home Loan Bank of New York stock	28,641		370		5.24		31,263		577		7.42
Interest-earning deposits in financial institutions	133,207		37		0.11		70,225		172		0.99
Total interest-earning assets	5,253,536		45,067		3.48		4,683,953		42,732		3.67
Non-interest-earning assets	310,681						289,925
Total assets	$	5,564,217					$	4,973,878
Interest-bearing liabilities:
Savings, NOW, and money market accounts	$	2,768,816	$	932	0.14	%	$	2,002,066	$	4,073	0.82	%
Certificates of deposit	611,267		938		0.62		1,114,043		5,206		1.88
Total interest-bearing deposits	3,380,083		1,870		0.22		3,116,109		9,279		1.20
Borrowed funds	591,993		3,021		2.07		679,476		3,520		2.08
Total interest-bearing liabilities	$	3,972,076	4,891		0.50		$	3,795,585	12,799		1.36
Non-interest bearing deposits	739,064						382,044
Accrued expenses and other liabilities	98,261						93,129
Total liabilities	4,809,401						4,270,758
Stockholders' equity	754,816						703,120
Total liabilities and stockholders' equity	$	5,564,217					$	4,973,878
Net interest income			$	40,176					$	29,933
Net interest rate spread (4)					2.98	%					2.31	%
Net interest-earning assets (5)	$	1,281,460					$	888,368
Net interest margin (6)					3.10	%					2.57	%
Average interest-earning assets to interest-bearing liabilities					132.26	%					123.41	%

(1)    Average yields and rates are annualized.

(2)     Includes non-accruing loans.

(3)     Securities available-for-sale and other securities are reported at amortized cost.

(4)     Net interest rate spread represents the difference between the weighted average yield on interest-earning assets and the weighted average cost of interest-bearing liabilities.

(5)     Net interest-earning assets represent total interest-earning assets less total interest-bearing liabilities.

(6)    Net interest margin represents net interest income divided by average total interest-earning assets.

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Asset Quality

PCD Loans (Held-for-Investment)

Under the new CECL standard, the Company will continue to account for PCD loans at estimated fair value using discounted expected future cash flows deemed to be collectible on the date acquired. Based on its detailed review of PCD loans and experience in loan workouts, management believes it has a reasonable expectation about the amount and timing of future cash flows and accordingly has classified PCD loans ($18.0 million at March 31, 2021 and $18.5 million at December 31, 2020) as accruing, even though they may be contractually past due. At March 31, 2021, 2.9% of PCD loans were past due 30 to 89 days, and 19.7% were past due 90 days or more, as compared to 9.6% and 35.2%, respectively, at December 31, 2020.

Loans

The following table details total non-accruing loans, non-performing loans, non-performing assets and troubled debt restructurings ("TDRs") (including held-for-sale, but excluding PCD) on which interest is accruing, and accruing loans 30 to 89 days delinquent at March 31, 2021, and December 31, 2020 ( in thousands):  

	March 31, 2021			December 31, 2020
Non-accrual loans:
Held-for-investment
Real estate loans:
Commercial	$	4,961		$	6,229
One-to-four family residential	805			906
Construction and land	1,150			—
Multifamily	1,145			1,153
Home equity and lines of credit	187			191
Commercial and industrial	198			37
Total non-accrual loans held-for-investment	8,446			8,516
Loans delinquent 90 days or more and still accruing:
Held-for-investment
Real estate loans:
Commercial	219			500
One-to-four family residential	172			174
Multifamily	516			—
Commercial and industrial	738			436
Other	3			3
Total loans delinquent 90 days or more and still accruing held-for-investment	1,648			1,113
Non-performing loans held-for-sale
Real estate loans:
Commercial	—			18,250
Multifamily	—			1,612
Commercial and industrial	—			33
Total non-performing loans held-for-sale	—			19,895
Total non-performing loans	10,094			29,524
Other real estate owned	100			—
Total non-performing assets	$	10,194		$	29,524
Non-performing loans to total loans	0.26		%	0.77		%
Non-performing assets to total assets	0.18		%	0.54		%
Loans subject to restructuring agreements and still accruing	$	7,326		$	7,697
Accruing loans 30 to 89 days delinquent	$	14,148		$	13,982

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Other Real Estate Owned

Other real estate owned is comprised of one property acquired during the three months ended March 31, 2021, as a result of foreclosure. The property is located in New Jersey and had a carrying value of approximately $100,000 and is included in other assets on the consolidated balance sheet as of March 31, 2021.

Accruing Loans 30 to 89 Days Delinquent

Loans 30 to 89 days delinquent and on accrual status totaled $14.1 million and $14.0 million at March 31, 2021 and December 31, 2020, respectively. The following table sets forth delinquencies for accruing loans by type and by amount at March 31, 2021 and December 31, 2020 (in thousands):     

	March 31, 2021		December 31, 2020
Held-for-investment
Real estate loans:
Commercial	$	4,457	$	8,792
One-to-four family residential	4,023		1,152
Multifamily	2,419		1,893
Construction and land	390		994
Home equity and lines of credit	372		380
Commercial and industrial loans	2,480		760
Other loans	7		11
Total delinquent accruing loans	$	14,148	$	13,982

Loans Subject to TDR Agreements

Included in non-accruing loans are loans subject to TDR agreements totaling $3.7 million at both March 31, 2021 and December 31, 2020. There were no loans modified as TDRs during the three months ended March 31, 2021. At March 31, 2021, one of the non-accruing TDRs with a net loan balance of $382,000 was not performing in accordance with its restructured terms and was collateralized by real estate with an estimated fair value of $620,000. At December 31, 2020, two of the non-accruing TDRs totaling $462,500 were not performing in accordance with their restructured terms and were collateralized by real estate with an aggregate estimated fair value of $620,000.

The Company also holds loans subject to TDR agreements that are on accrual status totaling $7.3 million and $7.7 million at March 31, 2021 and December 31, 2020, respectively. At March 31, 2021, $6.1 million, or 83.5%, of the $7.3 million of accruing loans subject to TDR agreements were performing in accordance with their restructured terms. At December 31, 2020, $6.5 million, or 84.1%, of the $7.7 million of accruing loans subject to TDR agreements were performing in accordance with their restructured terms. Generally, the types of concessions that we make to troubled borrowers include both temporary and permanent reductions to interest rates, extensions of payment terms, and, to a lesser extent, forgiveness of principal and interest. 

The following table details the amounts and categories of the loans subject to restructuring agreements by loan type as of March 31, 2021 and December 31, 2020 (in thousands):

	March 31, 2021						December 31, 2020
	Non-Accruing			Accruing			Non-Accruing			Accruing
Real estate loans:
Commercial	$	3,274		$	5,414		$	3,292		$	5,518
One-to-four family residential	406			1,229			413			1,490
Multifamily	—			623			—			626
Home equity and lines of credit	—			45			—			47
Commercial and industrial loans	—			15			—			16
	$	3,680		$	7,326		$	3,705		$	7,697
Performing in accordance with restructured terms	87.6		%	83.5		%	87.5		%	84.1		%

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Management continues to evaluate the Company's exposure to increased loan losses related to the COVID-19 pandemic, in particular the commercial real estate and multifamily loan portfolios. During the second quarter of 2020, the Company implemented a customer relief program to assist borrowers that may be experiencing financial hardship due to COVID-19 related challenges. The relief program grants principal and/or interest payment deferrals typically for a period of 90 days, which management may choose to extend for additional 90 days periods. At the peak of forbearance in June 2020, the Company had 286 loans approved for payment deferral representing $360.2 million, or approximately 10% of the Company's loan portfolio. As of March 31, 2021, the Company had approximately $28.8 million, or 24 outstanding loans, (excluding PCD loans) remaining in deferral, representing approximately 0.7% of the Company’s outstanding loan portfolio (excluding PCD loans) as of that date. Loans currently in deferment status (“COVID-19 Modified Loans”) will continue to accrue interest during the deferment period unless otherwise classified as nonperforming. COVID-19 Modified Loans are required to make escrow payments for real estate taxes and insurance, if applicable. The COVID-19 Modified Loan agreements also require loans to be brought back to their fully contractual terms within 12 to 18 months and include covenants that prohibit distributions, bonuses, or payments of management fees to related entities until all deferred payments are made. Consistent with industry regulatory guidance, borrowers that were otherwise current on loan payments that were granted COVID-19 related financial hardship payment deferrals will continue to be reported as current loans throughout the agreed upon deferral period. Borrowers, which were delinquent in their payments to the Bank, prior to requesting a COVID-19 related financial hardship payment deferral are reviewed on a case by case basis for TDR classification and non-performing loan status.

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The following table sets forth the property types collateralizing our originated and acquired (excluding PCD) loans and loans in forbearance as of March 31, 2021 (dollars in thousands):

	Loan Portfolio by Property Type as of March 31, 2021									Loans in Forbearance for COVID Relief as of March 31, 2021
	Number of Loans	Amount		Average Loan Size		Weighted Average LTV Ratio		% of Total Loans		Number of Loans	Amount		Average Loan Size		Weighted Average LTV Ratio		% of Portfolio by Property Type
Commercial Real Estate and Multifamily
Multifamily(1)	1,122	$	2,571,409	$	2,292	53	%	65.8	%	7	$	17,988	$	2,570	46	%	0.70	%
Mixed use (majority of space is non-residential)	227	151,604		668		46	%	3.9	%	4	7,550		1,888		46	%	4.98	%
Retail	88	147,484		1,676		47	%	3.8	%	1	607		607		55	%	0.41	%
Office buildings	111	107,263		966		46	%	2.7	%	—	—		—		—	%	—	%
Accommodations	9	52,277		5,809		37	%	1.3	%	1	155		155		16	%	0.30	%
Nursing Home	5	27,608		5,522		58	%	0.7	%	—	—		—		—	%	—	%
Medical Office Buildings	24	26,765		1,115		64	%	0.7	%	—	—		—		—	%	—	%
Industrial and Manufacturing (Office and Plant)	23	18,608		809		44	%	0.5	%	—	—		—		—	%	—	%
Warehousing	30	23,907		797		46	%	0.6	%	—	—		—		—	%	—	%
Restaurant	22	13,045		593		51	%	0.3	%	—	—		—		—	%	—	%
Religious	16	10,716		670		39	%	0.3	%	—	—		—		—	%	—	%
Bank Branch	7	5,516		788		44	%	0.1	%	—	—		—		—	%	—	%
Schools/Child Daycare	6	5,604		934		36	%	0.1	%	—	—		—		—	%	—	%
Automobile	18	6,482		360		52	%	0.2	%	—	—		—		—	%	—	%
Funeral Home	2	1,771		885		63	%	—	%	—	—		—		—	%	—	%
Leisure	4	4,011		1,003		47	%	0.1	%	1	79		79		7	%	1.97	%
Car Wash	1	509		509		19	%	—	%	—	—		—		—	%	—	%
Other	138	130,942		949		59	%	3.3	%	—	—		—		—	%	—	%
Total commercial real estate and multifamily	1,853	3,305,521		1,784		52	%	84.4	%	14	26,379		1,884		46	%	0.80	%
One-to-four family residential	648	202,948		313		35	%	5.2	%	5	2,300		460		39	%	1.13	%
Home equity and lines of credit	1,741	93,119		53		47	%	2.4	%	1	32		32		67	%	0.03	%
Construction and land	43	77,205		1,795		38	%	2.0	%	—	—		—		—	%	—	%
Commercial and industrial loans	2,544	234,518		92		NM		6.0	%	4	129		32		NM		0.06	%
Other	125	1,659		13		NM		—	%	—	—		—		—	%	—	%
Total loans (excluding PCD)	6,954	$	3,914,970	563				100.0	%	24	$	28,840	1,202				0.74	%

(1) Property type is apartment units equal or greater than five units.

Of the loans currently in deferral as of March 31, 2021, seven loans totaling $11.8 million are in their first deferral period and 17 loans totaling $17.0 million are repeat deferrals. As of May 7, 2021, four loans in the table above totaling $4.3 million returned to contractual payments. A further seven loans totaling $5.3 million were granted additional relief, the majority being repeat deferrals.

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Liquidity and Capital Resources

Liquidity. The objective of our liquidity management is to ensure the availability of sufficient funds to meet financial commitments and to take advantage of lending and investment opportunities. The Bank manages liquidity in order to meet deposit withdrawals on demand or at contractual maturity, to repay borrowings as they mature, and to fund new loans and investments as opportunities arise.

The Bank's primary sources of funds are deposits, principal and interest payments on loans and securities, borrowed funds, the proceeds from maturing securities and short-term investments, and to a lesser extent, proceeds from the sales of loans and securities and wholesale borrowings. The scheduled amortization of loans and securities, as well as proceeds from borrowed funds, are predictable sources of funds. Other funding sources, however, such as deposit inflows and loan prepayments are greatly influenced by market interest rates, economic conditions, and competition. The Bank is a member of the FHLBNY, which provides an additional source of short-term and long-term funding. The Bank also has short-term borrowing capabilities with the Federal Reserve Bank of New York. The Bank’s borrowed funds, excluding lease obligations, floating rate advances and overnight line of credit, were $585.0 million at March 31, 2021, and had a weighted average interest rate of 2.08%. A total of $195.0 million of these borrowings will mature in less than one year. Borrowed funds, excluding floating rate advances and overnight line of credit, were $585.0 million at December 31, 2020. The Bank has the ability to obtain additional funding from the FHLB of approximately $1.92 billion utilizing unencumbered securities of $583.3 million, loans of $1.34 billion, and encumbered securities of $279,000 at March 31, 2021. Additionally, the Bank has remaining borrowing capacity utilizing encumbered securities through the FRB Discount Window of $23.0 million. The Bank expects to have sufficient funds available to meet current commitments in the normal course of business.

Northfield Bancorp, Inc. (standalone) is a separate legal entity from the Bank and must provide for its own liquidity to pay dividends, repurchase its stock, and for other corporate purposes. Northfield Bancorp, Inc.'s primary source of liquidity is dividend payments from the Bank. At March 31, 2021, Northfield Bancorp, Inc. (standalone) had liquid assets of $75.6 million.

Capital Resources. Federal regulations require federally insured depository institutions to meet several minimum capital standards: a common equity Tier 1 capital to risk-based assets ratio of 4.5%, a Tier 1 capital to risk-based assets ratio of 6.0%, a total capital to risk-based assets of 8.0%, and a 4.0% Tier 1 capital to total assets leverage ratio. In addition to establishing the minimum regulatory capital requirements, the regulations limit capital distributions and certain discretionary bonus payments to management if the institution does not hold a “capital conservation buffer” consisting of 2.5% of common equity Tier 1 capital to risk-weighted assets in addition to the amount necessary to meet its minimum risk-based capital requirements.

As a result of the Economic Growth, Regulatory Relief, and Consumer Protection Act, the federal banking agencies developed a “Community Bank Leverage Ratio” (“CBLR”) (the ratio of a bank’s tangible equity capital to average total consolidated assets) for financial institutions with assets of less than $10 billion. A qualifying community bank that exceeds this ratio will be deemed to be in compliance with all other capital and leverage requirements, including the capital requirements to be considered “well capitalized” under Prompt Corrective Action statutes. The federal banking agencies approved 9% as the minimum capital for the CBLR. Effective March 31, 2020, a financial institution can elect to be subject to this new definition. Northfield Bank and Northfield Bancorp have elected to opt into the CBLR framework, beginning with the Call Reports filed for the first quarter of 2020. The CBLR replaced the risk-based and leverage capital requirements in the generally applicable capital rules. On April 6, 2020, the federal banking regulators, implementing the applicable provisions of the CARES Act, modified the CBLR framework so that the minimum CBLR will be 8% beginning in the second quarter and for the remainder of calendar year 2020, 8.5% for calendar year 2021, and 9% thereafter.

At March 31, 2021, and December 31, 2020, as set forth in the following table, both Northfield Bank and Northfield Bancorp, Inc. exceeded all of the regulatory capital requirements to which they were subject at such dates.

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	Northfield Bank	Northfield Bancorp, Inc.	For Capital Adequacy Purposes	For Well Capitalized Under Prompt Corrective Action Provisions
As of March 31, 2021:
CBLR	10.92%	12.69%	8.00%	8.00%
As of December 31, 2020:
CBLR	11.96%	12.73%	8.00%	8.00%

Off-Balance Sheet Arrangements and Contractual Obligations

In the normal course of operations, the Company engages in a variety of financial transactions that, in accordance with U.S. GAAP, are not recorded in the financial statements. These transactions primarily relate to lending commitments. These arrangements are not expected to have a material impact on the Company's results of operations or financial condition.

The following table shows the contractual obligations of the Company by expected payment period as of March 31, 2021 (in thousands):

Contractual Obligations	Total		Less than One Year		One to less than Three Years		Three to less than Five Years		More than Five Years
Borrowings	$	585,000	$	195,000	$	182,500	$	162,500	$	45,000
Operating lease liabilities	53,696		6,118		10,937		9,488		27,153
Commitments to originate loans	112,596		112,596		—		—		—
Commitments to fund unused lines of credit	213,408		213,408		—		—		—

Commitments to fund unused lines of credit are agreements to lend additional funds to customers as long as there have been no violations of any of the conditions established in the agreements (original or restructured). Commitments to originate loans generally have a fixed expiration or other termination clauses, which may require payment of a fee. Since some of these loan commitments are expected to expire without being drawn upon, total commitments do not necessarily represent future cash requirements. At March 31, 2021, the reserve for commitments to fund unused lines of credit recorded in accrued expenses and other liabilities was $1.7 million.

For further information regarding our off-balance sheet arrangements and contractual obligations, see "Management’s Discussion and Analysis of Financial Condition and Results of Operations" in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.

Accounting Pronouncements Not Yet Adopted

ASU No. 2020-04. On March 12, 2020, FASB issued ASU No. 2020-04, “Reference Rate Reform ("ASC 848"): Facilitation of the Effects of Reference Rate Reform on Financial Reporting”, which provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. The ASU provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference the London Inter-Bank Offered Rate (“LIBOR”) or another reference rate expected to be discontinued. It is intended to help stakeholders during the global market-wide reference rate transition period. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. The Company is implementing a transition plan to identify and modify its loans and other financial instruments that are either directly or indirectly influenced by LIBOR. The Company is in the process of evaluating ASU No. 2020-04 and its impact on the Company’s transition away from LIBOR for its loan and other financial instruments, with no material expected impact on the Company's financial condition or results of operation at this time.

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ASU No. 2019-12. In December 2019, the FASB issued ASU No. 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” ASU No. 2019-12 simplifies accounting for income taxes by removing specific technical exceptions in ASC 740 related to the incremental approach for intra-period tax allocation, the methodology for calculating income taxes in an interim period and the recognition for deferred tax liabilities for outside basis differences. ASU No. 2019-12 also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. The amendments in this update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. ASU No. 2019-12 is not expected to have a material impact on the Company’s financial condition or results of operations.

ASU No. 2018-14. In August 2018, the FASB issued ASU No. 2018-14, “Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans.” This ASU makes minor changes to the disclosure requirements for employers that sponsor defined benefit pension and/or other postretirement benefit plans. ASU 2018-14 is effective for fiscal years ending after December 15, 2020, with early adoption permitted. As ASU 2018-14 only revises disclosure requirements, it will not have an impact on the Company’s financial condition or results of operations.

See Note 15 of the Notes to the Unaudited Consolidated Financial Statements for information about recent accounting pronouncements adopted.

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ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Management of Market Risk

General.  A majority of our assets and liabilities are monetary in nature. Consequently, our most significant form of market risk is interest rate risk. Our assets, consisting primarily of mortgage-related securities and loans, generally have longer maturities than our liabilities, which consist primarily of deposits and wholesale borrowings. As a result, a principal part of our business strategy involves managing interest rate risk and limiting the exposure of our net interest income to changes in market interest rates. Accordingly, our Board of Directors has established a Management Asset-Liability Committee, comprised of our Senior Vice President ("SVP") & Chief Investment Officer and Treasurer, who chairs this Committee, our President and Chief Executive Officer, our Executive Vice President ("EVP") & Chief Risk Officer, EVP & Chief Financial Officer, EVP & Chief Lending Officer, EVP of Business Development, Branch Administration and Deposit Operations, and SVP & Director of Marketing, and other officers and staff as necessary or appropriate. This committee is responsible for, among other things, evaluating the interest rate risk inherent in our assets and liabilities, for recommending to the risk management committee of our Board of Directors the level of risk that is appropriate given our business strategy, operating environment, capital, liquidity and performance objectives, and for managing this risk consistent with the guidelines approved by the Board of Directors.

We seek to manage our interest rate risk in order to minimize the exposure of our earnings and capital to changes in interest rates. As part of our ongoing asset-liability management, we currently use the following strategies to manage our interest rate risk:

•originating multifamily loans and commercial real estate loans that generally have shorter maturities than one-to-four family residential real estate loans and have higher interest rates that generally reset from five to ten years;

•investing in investment grade corporate securities and mortgage-backed securities; and

•obtaining general financing through lower-cost core deposits, brokered deposits, and longer-term FHLB advances and repurchase agreements.

Shortening the average term of our interest-earning assets by increasing our investments in shorter-term assets, as well as originating loans with variable interest rates, helps to match the maturities and interest rates of our assets and liabilities better, thereby reducing the exposure of our net interest income to changes in market interest rates.

Net Portfolio Value Analysis. We compute amounts by which the net present value of our assets and liabilities (net portfolio value or "NPV") would change in the event market interest rates changed over an assumed range of rates. Our simulation model uses a discounted cash flow analysis to measure the interest rate sensitivity of our NPV. Depending on current market interest rates, we estimate the economic value of these assets and liabilities under the assumption that interest rates experience an instantaneous and sustained increase of 100, 200, 300, or 400 basis points, or a decrease of 100 and 200 basis points, which is based on the current interest rate environment. A basis point equals one-hundredth of one percent, and 100 basis points equals one percent. An increase in interest rates from 3% to 4% would mean, for example, a 100 basis point increase in the “Change in Interest Rates” column below. 

Net Interest Income Analysis.  In addition to NPV calculations, we analyze our sensitivity to changes in interest rates through our net interest income model. Net interest income is the difference between the interest income we earn on our interest-earning assets, such as loans and securities, and the interest we pay on our interest-bearing liabilities, such as deposits and borrowings. In our model, we estimate what our net interest income would be for a twelve-month period. Depending on current market interest rates we then calculate what the net interest income would be for the same period under the assumption that interest rates experience an instantaneous and sustained increase or decrease of 100, 200, 300, or 400 basis points, or a decrease of 100 and 200 basis points, which is based on the current interest rate environment.

The following tables set forth, as of March 31, 2021, and December 31, 2020, our calculation of the estimated changes in our NPV, NPV ratio, and percent change in net interest income that would result from the designated instantaneous and sustained changes in interest rates (dollars in thousands). Computations of prospective effects of hypothetical interest rate changes are based on numerous assumptions, including relative levels of market interest rates, loan prepayments and deposit repricing characteristics, including decay rates, and correlations to movements in interest rates, and should not be relied on as indicative of actual results.

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	NPV at March 31, 2021
Change in Interest Rates (basis points)	Estimated Present Value of Assets		Estimated Present Value of Liabilities		Estimated NPV		Estimated Change In NPV		Estimated Change in NPV %		Estimated NPV/Present Value of Assets Ratio		Next 12 Months Net Interest Income Percent Change		Months 13-24 Net Interest Income Percent Change
+400	$	5,148,918	$	4,251,279	$	897,639	$	(49,759)	(5.25)	%	17.43	%	(0.93)	%	16.60	%
+300	5,253,941		4,345,509		908,432		(38,966)		(4.11)		17.29		(0.58)		12.71
+200	5,365,532		4,444,021		921,511		(25,887)		(2.73)		17.17		(0.24)		8.93
+100	5,480,265		4,547,489		932,776		(14,622)		(1.54)		17.02		(0.12)		4.72
—	5,603,927		4,656,529		947,398		—		—		16.91		—		—
(100)	5,759,191		4,778,338		980,853		33,455		3.53		17.03		(2.24)		(5.88)
(200)	5,885,046		4,850,146		1,034,900		87,502		9.24		17.59		(3.77)		(8.52)

	NPV at December 31, 2020
Change in Interest Rates (basis points)	Estimated Present Value of Assets		Estimated Present Value of Liabilities		Estimated NPV		Estimated Change In NPV		Estimated Change in NPV %		Estimated NPV/Present Value of Assets Ratio		Next 12 Months Net Interest Income Percent Change		Months 13-24 Net Interest Income Percent Change
+400	$	5,085,541	$	4,262,399	$	823,142	$	(29,103)	(3.41)	%	16.19	%	1.52	%	20.02	%
+300	5,183,396		4,358,918		824,478		(27,767)		(3.26)		15.91		1.35		15.41
+200	5,289,795		4,459,805		829,990		(22,255)		(2.61)		15.69		1.19		10.99
+100	5,401,377		4,565,784		835,593		(16,652)		(1.95)		15.47		0.78		5.98
—	5,529,750		4,677,505		852,245		—		—		15.41		—		—
(100)	5,678,960		4,781,710		897,250		45,005		5.28		15.80		(2.41)		(5.73)
(200)	5,814,119		4,794,445		1,019,674		167,429		19.65		17.54		(3.70)		(7.89)

At March 31, 2021, in the event of a 200 basis point decrease in interest rates, we would experience a 9.24% increase in estimated net portfolio value and a 3.77% decrease in net interest income in year one and an 8.52% decrease in net interest income in year two. In the event of a 400 basis point increase in interest rates, we would experience a 5.25% decrease in estimated net portfolio value and a 0.93% decrease in net interest income in year one and a 16.60% increase in net interest income in year two. Our policies provide that, in the event of a 200 basis point decrease or less in interest rates, our net present value ratio should decrease by no more than 300 basis points and 10%, and in the event of a 400 basis point increase or less, our net present value should decrease by no more than 475 basis points and 35%. In the event of a 200 basis point decrease or less, our projected net interest income should decrease by no more than 10% in year one and 10% in year two, and in the event of a 400 basis point increase or less, our projected net interest income should decrease by no more than 30% in year one and 20% in year two. However, when the federal funds rate is low and negative rate shocks do not produce meaningful results, management may temporarily suspend use of guidelines for negative interest rate shocks. At March 31, 2021 and December 31, 2020, we were in compliance with all Board-approved policies with respect to interest rate risk management.

Certain shortcomings are inherent in the methodologies used in determining interest rate risk through changes in net portfolio value and net interest income. Our model requires us to make certain assumptions that may or may not reflect the manner in which actual yields and costs respond to changes in market interest rates. However, we also apply consistent parallel yield curve shifts (in both directions) to determine possible changes in net interest income if the theoretical yield curve shifts occurred gradually. Net interest income analysis also adjusts the asset and liability repricing analysis based on changes in prepayment rates resulting from the parallel yield curve shifts. In addition, the net portfolio value and net interest income information presented assume that the composition of our interest-sensitive assets and liabilities existing at the beginning of a period remains constant over the period being measured and assume that a particular change in interest rates is reflected uniformly across the yield curve regardless of the duration or repricing of specific assets and liabilities. Accordingly, although interest rate risk calculations provide an indication of our interest rate risk exposure at a particular point in time, such measurements are not intended to and do not provide a precise forecast of the effect of changes in market interest rates on our net portfolio value or net interest income and will differ from actual results.

61

Table of Contents

ITEM 4.    CONTROLS AND PROCEDURES 

An evaluation was performed under the supervision and with the participation of the Company’s management, including the President and Chief Executive Officer and the Chief Financial Officer, of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended) as of March 31, 2021. Based on that evaluation, the Company’s management, including the President and Chief Executive Officer and the Chief Financial Officer, concluded that the Company’s disclosure controls and procedures were effective.

During the three months ended March 31, 2021, there were no changes in the Company’s internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

62

Table of Contents

PART II

ITEM 1.     LEGAL PROCEEDINGS

The Company and subsidiaries are subject to various legal actions arising in the normal course of business.  In the opinion of management, the resolution of these legal actions is not expected to have a material adverse effect on the Company’s consolidated financial condition or results of operations.

ITEM 1A.  RISK FACTORS

During the quarter ended March 31, 2021, there have been no material changes to the risk factors as previously disclosed in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, as filed with the Securities and Exchange Commission, or as previously disclosed in our other filings with the Securities and Exchange Commission.

ITEM 2.     UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

(a)Unregistered Sale of Equity Securities. There were no sales of unregistered securities during the period covered by this report.

(b)Use of Proceeds. Not applicable.

(c)Repurchases of Our Equity Securities.  

On March 18, 2021, the Board of Directors of the Company approved a new stock repurchase program. The program permits $54.2 million of the Company's shares of common stock to be repurchased in open market or private transactions, through block trades, and pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities and Exchange Commission. The timing of the repurchases will depend on certain factors, including but not limited to, market conditions and prices, the Company’s liquidity and capital requirements, and alternative uses of capital. Any repurchased shares will be held as treasury stock and will be available for general corporate purposes. The repurchases may be suspended, terminated or modified at any time for any reason, including market conditions, the cost of repurchasing shares, the availability of alternative investment opportunities, liquidity, and other factors deemed appropriate.

The following table reports information regarding purchases of the Company’s common stock during the three months ended March 31, 2021.

Period	(a) Total Number of Shares Purchased	(b) Average Price Paid per Share		(c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	(d) Approximate Number of Shares that May Yet be Purchased Under the Plans or Programs
January 1, 2021 to January 31, 2021	389,710	$	12.90	389,710	174,778
February 1, 2021 to February 28, 2021	174,778	13.12		174,778	—
March 1, 2021 to March 31, 2021	177,835	15.79		177,835	900,771
Total	742,323	13.64		742,323

ITEM 3.     DEFAULTS UPON SENIOR SECURITIES

    None.

ITEM 4.     MINE SAFETY DISCLOSURES

    Not applicable.

ITEM 5.     OTHER INFORMATION

    None.

63

Table of Contents

ITEM 6.      EXHIBITS

    The following exhibits required by Item 601 of Regulation S-K are included with this Quarterly Report on Form 10-Q.

Exhibit Number	Description
31.1	Certification of Steven M. Klein, President and Chief Executive Officer, Pursuant to Rule 13a-14(a) and Rule 15d-14(a)
31.2	Certification of William R. Jacobs, Chief Financial Officer, Pursuant to Rule 13a-14(a) and Rule 15d-14(a)
32	Certification of Steven M. Klein, President and Chief Executive Officer, and William R. Jacobs, Chief Financial Officer, Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL (Extensible Business Reporting Language) Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH	Inline XBRL Taxonomy Extension Schema Document.
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104	Cover page information from the Company's Quarterly Report on Form 10-Q filed May 10, 2021, formatted in Inline XBRL

64

Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

NORTHFIELD BANCORP, INC.

(Registrant)

Date: May 10, 2021

/s/   Steven M. Klein

Steven M. Klein

President and Chief Executive Officer

/s/   William R. Jacobs

William R. Jacobs

Executive Vice President and Chief Financial Officer

(Principal Financial and Accounting Officer)

65

EX-31.1

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, William R. Jacobs, certify that:

1)I have reviewed this quarterly report on Form 10-Q of Northfield Bancorp, Inc.;

2)Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5)The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 10, 2021

/s/ William R. Jacobs

William R. Jacobs

Executive Vice President and Chief Financial Officer

(Principal Financial and Accounting Officer)

EX-31.2

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven M. Klein, certify that:

1)I have reviewed this quarterly report on Form 10-Q of Northfield Bancorp, Inc.;

2)Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5)The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 10, 2021

/s/ Steven M. Klein

Steven M. Klein

President and Chief Executive Officer

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

    Steven M. Klein, President and Chief Executive Officer of Northfield Bancorp, Inc. (the “Company”), and William R. Jacobs, Chief Financial Officer of the Company, each certify in his capacity as an officer of the Company that he has reviewed the quarterly report of the Company on Form 10-Q for the quarter ended March 31, 2021, (the “Report”) and that to best of his knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  Steven M. Klein	Date: May 10, 2021
Steven M. Klein
President and Chief Executive Officer

/s/   William R. Jacobs	Date: May 10, 2021
William R. Jacobs
Executive Vice President and Chief Financial Officer
(Principal Financial and Accounting Officer)

A signed original of this written statement required by Section 906 has been provided to Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2021	Apr. 30, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-35791
Entity Registrant Name	Northfield Bancorp, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	80-0882592
Entity Address, Address Line One	581 Main Street,
Entity Address, City or Town	Woodbridge,
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07095
City Area Code	732
Local Phone Number	499-7200
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	NFBK
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		51,303,231
Entity Central Index Key	0001493225
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS:
Cash and due from banks	$ 15,920	$ 16,115
Interest-bearing deposits in other financial institutions	111,650	71,429
Total cash and cash equivalents	127,570	87,544
Trading securities	12,142	12,291
Debt securities available-for-sale	1,207,238	1,264,805
Debt securities held-to-maturity, at amortized cost, (estimated fair value of $7,241 at March 31, 2021, and $7,574 at December 31, 2020, and no allowance for credit losses at March 31, 2021)	6,913	7,234
Equity securities	473	253
Loans held-for-sale	0	19,895
Total Loans held-for-investment, net	3,933,015	3,823,238
Less: allowance for loan losses	(43,197)	(37,607)
Net loans held-for-investment	3,889,818	3,785,631
Accrued interest receivable	14,753	14,690
Bank-owned life insurance	162,771	161,924
Federal Home Loan Bank (“FHLB”) of New York stock, at cost	28,641	28,641
Operating lease right-of-use assets	35,662	36,741
Premises and equipment, net	27,509	28,188
Goodwill	41,320	41,320
Other assets	22,114	25,387
Total assets	5,576,924	5,514,544
LIABILITIES:
Deposits	4,135,716	4,076,551
Securities sold under agreements to repurchase	75,000	75,000
FHLB advances and other borrowings	517,170	516,789
Operating lease liabilities	42,067	42,734
Advance payments by borrowers for taxes and insurance	24,027	19,677
Accrued expenses and other liabilities	28,379	29,812
Total liabilities	4,822,359	4,760,563
STOCKHOLDERS’ EQUITY:
Preferred stock, $0.01 par value: 25,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value: 150,000,000 shares authorized, 64,770,875 shares issued at March 31, 2021 and December 31, 2020, 51,668,197 and 52,209,897 outstanding at March 31, 2021, and December 31, 2020, respectively	648	648
Additional paid-in-capital	589,188	590,506
Unallocated common stock held by employee stock ownership plan	(18,286)	(18,529)
Retained earnings	348,236	338,093
Accumulated other comprehensive income	12,267	13,160
Treasury stock at cost: 13,102,678 and 12,560,978 shares at March 31, 2021 and December 31, 2020, respectively	(177,488)	(169,897)
Total stockholders’ equity	754,565	753,981
Total liabilities and stockholders’ equity	$ 5,576,924	$ 5,514,544

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Debt securities available-for-sale, allowance for credit loss	$ 0
Debt securities held-to-maturity	7,241	$ 7,574
Debt securities held-to-maturity, allowance for credit loss	$ 0
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	25,000,000	25,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	150,000,000	150,000,000
Common stock, shares issued (shares)	64,770,875	64,770,875
Common stock, shares outstanding (shares)	51,668,197	52,209,897
Treasury stock, shares (shares)	13,102,678	12,560,978

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income:
Loans	$ 41,277	$ 35,337
Mortgage-backed securities	2,959	5,622
Other securities	424	1,024
FHLB of New York dividends	370	577
Deposits in other financial institutions	37	172
Total interest income	45,067	42,732
Interest expense:
Deposits	1,870	9,279
Borrowings	3,021	3,520
Total interest expense	4,891	12,799
Net interest income	40,176	29,933
Provision for credit losses	(2,374)	8,183
Net interest income after provision for loan losses	42,550	21,750
Non-interest income:
Fees and service charges for customer services	1,197	1,120
Income on bank-owned life insurance	848	876
Gains (losses) on available-for-sale debt securities, net	97	(13)
Gains (losses) on trading securities, net	364	(1,992)
Other	130	117
Total non-interest income	2,636	108
Non-interest expense:
Compensation and employee benefits	10,532	7,289
Occupancy	3,701	3,060
Furniture and equipment	437	333
Data processing	1,632	1,460
Professional fees	906	1,109
Advertising	465	818
Federal Deposit Insurance Corporation ("FDIC") insurance	375	0
Other	1,515	1,613
Total non-interest expense	19,563	15,682
Income before income tax expense	25,623	6,176
Income tax expense	6,946	1,625
Net income	$ 18,677	$ 4,551
Net income per common share:
Basic (usd per share)	$ 0.38	$ 0.10
Diluted (usd per share)	$ 0.38	$ 0.10
Unrealized (losses) gains on debt securities available-for-sale:
Net unrealized holding (losses) gains	$ (1,144)	$ 8,310
Less: reclassification adjustment for net (gains) losses included in net income	(97)	13
Net unrealized (losses) gains	(1,241)	8,323
Income tax benefit (expense) related to net unrealized holding (losses) gains on debt securities available-for-sale	321	(2,326)
Income tax expense (benefit) related to reclassification adjustment for (gains) losses included in net income	27	(3)
Other comprehensive (loss) income, net of tax	(893)	5,994
Comprehensive income	$ 17,784	$ 10,545

XML

Consolidated Statements of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjusted Balance	Unallocated Common Stock Held by the Employee Stock Ownership Plan	Unallocated Common Stock Held by the Employee Stock Ownership Plan Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (loss) Net of tax	Accumulated Other Comprehensive Income (loss) Net of tax Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury Stock	Treasury Stock Cumulative Effect, Period of Adoption, Adjusted Balance
Beginning Balance (shares) at Dec. 31, 2019				49,175,347
Beginning Balance at Dec. 31, 2019	$ 695,853			$ 609		$ 548,486		$ (19,740)		$ 322,581			$ 4,699		$ (160,782)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,551									4,551
Other comprehensive income (loss), net of tax	5,994												5,994
ESOP shares allocated or committed to be released	446					198		248
Stock compensation expense	448					448
Issuance of restricted stock (in shares)				103,581
Issuance of restricted stock	0					(1,416)									1,416
Exercise of stock options, net (shares)				13,000
Exercise of stock options, net	175					(4)									179
Cash dividends declared and paid	(5,151)									(5,151)
Ending Balance (shares) at Mar. 31, 2020				49,291,928
Ending Balance at Mar. 31, 2020	702,316			$ 609		547,712		(19,492)		321,981			10,693		(159,187)
Beginning Balance (shares) at Dec. 31, 2019				49,175,347
Beginning Balance at Dec. 31, 2019	$ 695,853			$ 609		548,486		(19,740)		322,581			4,699		(160,782)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Ending Balance (shares) at Dec. 31, 2020				52,209,897	52,209,897
Ending Balance at Dec. 31, 2020	$ 753,981	$ (3,087)	$ 750,894	$ 648	$ 648	590,506	$ 590,506	(18,529)	$ (18,529)	338,093	$ (3,087)	$ 335,006	13,160	$ 13,160	(169,897)	$ (169,897)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18,677									18,677
Other comprehensive income (loss), net of tax	(893)												(893)
ESOP shares allocated or committed to be released	412					169		243
Stock compensation expense	244					244
Issuance of restricted stock (in shares)				147,307
Issuance of restricted stock	0					(1,821)									1,821
Restricted stock forfeitures (in shares)				(1,674)
Restricted stock forfeitures	$ 0					26									(26)
Exercise of stock options, net (shares)	54,990			54,990
Exercise of stock options, net	$ 808					64									744
Cash dividends declared and paid	(5,447)									(5,447)
Repurchase of treasury stock (in shares)				(742,323)
Repurchase of treasury stock	(10,130)														(10,130)
Ending Balance (shares) at Mar. 31, 2021				51,668,197
Ending Balance at Mar. 31, 2021	$ 754,565			$ 648		$ 589,188		$ (18,286)		$ 348,236			$ 12,267		$ (177,488)

XML

Consolidated Statements of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (usd per share)	$ 0.11	$ 0.11
Dividends paid per share (usd per share)	0.11	$ 0.11
Treasury stock repurchased cost per share (usd per share)	$ 13.64

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Cash Flows [Abstract]
Net income	$ 18,677	$ 4,551
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	(2,374)	8,183
ESOP and stock compensation expense	656	894
Depreciation	972	795
Amortization of premiums, and deferred loan costs, net of (accretion) discounts, and deferred loan fees	564	1,065
Amortization of intangible assets	50	55
Amortization of operating lease right-of-use assets	1,079	1,059
Income on bank-owned life insurance	(848)	(876)
Net gain on sale of loans held-for-sale	(39)	0
(Gains) losses on available-for-sale debt securities, net	(97)	13
(Gains) losses on trading securities, net	(364)	1,992
Net sales of trading securities	513	842
(Increase) decrease in accrued interest receivable	(63)	311
Decrease (increase) in other assets	2,905	(1,023)
Decrease in accrued expenses and other liabilities	(1,433)	(5,912)
Net cash provided by operating activities	20,198	11,949
Cash flows from investing activities:
Net increase in loans receivable	(107,720)	(72,609)
Proceeds from sale of loans held-for-sale	23,537	0
Purchases of FHLB of New York stock	0	(7,515)
Redemptions of FHLB of New York stock	0	17,235
Purchases of debt securities available-for-sale	(103,743)	(26,320)
Purchases of equity securities	(220)	(142)
Principal payments and maturities on debt securities available-for-sale	152,892	110,946
Principal payments and maturities on debt securities held-to-maturity	306	52
Proceeds from sale of debt securities available-for-sale	5,942	0
Proceeds from bank-owned life insurance	0	2
Purchases and improvements of premises and equipment	(293)	(806)
Net cash (used in) provided by investing activities	(29,299)	20,843
Cash flows from financing activities:
Net increase in deposits	59,165	77,313
Dividends paid	(5,447)	(5,151)
Exercise of stock options	808	175
Purchase of treasury stock	(10,130)	0
Increase in advance payments by borrowers for taxes and insurance	4,350	2,399
Proceeds from securities sold under agreements to repurchase and other borrowings	381	220,353
Repayments related to securities sold under agreements to repurchase and other borrowings	0	(361,000)
Net cash provided by (used in) financing activities	49,127	(65,911)
Net increase (decrease) in cash and cash equivalents	40,026	(33,119)
Cash and cash equivalents at beginning of period	87,544	147,818
Cash and cash equivalents at end of period	127,570	114,699
Cash paid during the period for:
Interest	5,042	13,003
Income taxes	496	550
Non-cash transactions:
Loan charge-offs, net	2,389	90
Transfer of loans held-for-investment to loans-held-for-sale at fair value	5,215	0
Transfer of loans held-for-sale at fair value to loans held-for-investment	1,612	0
Transfer of loans held-for-investment to other real estate owned	100	0
Right-of-use assets obtained in exchange for new lease liabilities	$ 0	$ 3,028

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Consolidated Financial Statements

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Consolidated Financial Statements

Consolidated Financial Statements

Basis of Presentation

The consolidated financial statements are comprised of the accounts of Northfield Bancorp, Inc. (and its wholly owned subsidiaries, Northfield Investments, Inc. and Northfield Bank (the “Bank”), and the Bank’s wholly-owned subsidiaries, NSB Services Corp. and NSB Realty Trust, collectively the “Company”). All significant intercompany accounts and transactions have been eliminated in consolidation.

In the opinion of management, all adjustments (consisting solely of normal and recurring adjustments) necessary for the fair presentation of the consolidated balance sheets and the consolidated statements of comprehensive income for the unaudited periods presented have been included. The results of operations and other data presented for the three months ended March 31, 2021 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2021 or for any other period. Whenever necessary, certain prior year amounts are reclassified to conform to the current year presentation.

In preparing the unaudited consolidated financial statements in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”), management has made estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheets and the consolidated statements of comprehensive income for the periods indicated. Material estimates that are particularly susceptible to change are: the allowance for loan losses, estimated cash flows of our purchased credit-deteriorated (“PCD”, or, previously, purchased credit-impaired “PCI” ) loans and the valuation allowance against deferred tax assets. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the consolidated financial statements in the period they are deemed necessary. While management uses its best judgment, actual amounts or results could differ significantly from those estimates.

Certain information and note disclosures usually included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for the preparation of interim financial statements. The consolidated financial statements presented should be read in conjunction with the audited consolidated financial statements and notes to consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020, as filed with the SEC. 

Loans and Allowance for Credit Losses

On January 1, 2021, the Company adopted ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): “Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (“CECL”) methodology. The Company used the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. The adoption of the new standard resulted in the Company recording an increase in the allowance for credit losses of $11.1 million, comprised of $10.4 million and $737,000, respectively, for loans and unfunded commitments, including $6.8 million related to PCD loans. For PCD loans, the allowance for credit losses recorded is recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity. The remaining increase to the allowance for credit losses of $4.3 million was offset in stockholders' equity and deferred taxes. As a result of adopting CECL, the Company's prior distinction between the originated loan portfolio and the non-PCD acquired loan portfolio is no longer necessary. Results for reporting periods beginning after January 1, 2021 are presented under CECL, while prior period amounts continue to be recorded with previously applicable U.S. GAAP. Further information regarding the impact of CECL can be found in Note 6 - Loans, Note 7 - Allowance for Loan Losses and Note 15 - Recent Accounting Pronouncements Adopted.

COVID-19

On March 13, 2020, the Coronavirus Disease (COVID-19) pandemic was declared a national emergency in the United States. The spread of COVID-19 has negatively impacted the national and local economy, disrupted supply chains and increased unemployment levels. The initial temporary closure and gradual reopening of many businesses and the implementation of social distancing and stay-at-home policies has and will continue to impact many of the Company’s customers. The Company is committed to supporting its customers, employees and communities during this time of recovery and continues to update protocols to adapt to the changing environment. The Company's bank branches offer drive through services without interruption, while lobbies are fully open or accessible to clients via appointment. The Company continues to provide secure and efficient remote and in-person work options for back office employees.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act was signed into law. It contains substantial tax and spending provisions intended to address the impact of the COVID-19 pandemic. The CARES Act includes a range of other provisions designed to support the U.S. economy and mitigate the impact of COVID-19 on financial institutions and their customers, including through the authorization of various relief programs and measures that the U.S. Department of the Treasury, the Small Business Administration, the Board of Governors of the Federal Reserve System, and other federal banking agencies have implemented or may implement.

The CARES Act also includes a provision that permits a financial institution to elect to suspend temporarily TDR accounting under current U.S. generally accepted accounting principles (“U.S. GAAP”) in certain circumstances. To be eligible, a loan modification must be: (1) related to COVID-19; (2) executed on a loan that was not more than 30 days past due as of December 31, 2019; and (3) executed between March 1, 2020, and the earlier of (a) 60 days after the date of termination of the national emergency or (b) December 31, 2020. This relief was further extended by the Consolidated Appropriations Act to the earlier of January 1, 2022 or 60 days after the date of termination of the national emergency. The relief provided includes short-term (e.g., up to six months) modifications such as payment deferrals, fee waivers, extensions of repayment terms, or delays in payment that are insignificant. Borrowers considered current are those that are less than 30 days past due on their contractual payments at the time a modification program is implemented. The banking regulators issued similar guidance, which also clarified that a COVID-19-related modification should not be considered a TDR if the borrower was current on payments at the time the underlying loan modification program was implemented and if the modification is considered to be short-term. In response to the COVID-19 pandemic and its economic impact to customers, the Company introduced a short-term modification program in March 2020 that provided temporary payment relief to those borrowers directly impacted by COVID-19. The program allows for a deferral of payments typically for 90 days, which may be extended for additional 90 day periods. See Note 6 - Loans for additional details of the Company's loan modification program.

A provision in the CARES Act provides for a loan guarantee program called the Paycheck Protection Program (“PPP”), which provides 100% federally guaranteed loans for small businesses to cover payroll, utilities, rent and interest. These small business loans are fully guaranteed by the Small Business Administration (“SBA”) and may be forgiven if borrowers maintain their payrolls and satisfy certain other conditions for a period of time during the COVID-19 pandemic. As of March 31, 2021, the Company had originated over 1,757 PPP loans to new and existing customers, totaling approximately $167.9 million. PPP provides for lender processing fees that range from 1% to 5% of the final disbursement made to individual borrowers. As of March 31, 2021, we have received cumulative loan processing fees of $8.8 million, of which $3.1 million has been recognized in earnings through March 31, 2021, including $1.3 million recognized in the quarter ended March 31, 2021. The remaining unearned fees will be recognized in income over the remaining term of the loans. PPP loans are fully guaranteed by the SBA and are therefore excluded from the allowance for loan and lease losses calculation.

The Company continues to maintain a strong liquidity and capital position as a buffer to protect against the economic uncertainties presented by the COVID-19 pandemic. As of March 31, 2021, both the Company and the Bank's capital ratios were in excess of regulatory requirements and are both currently classified as well capitalized. The Company maintains access to multiple sources of liquidity and expects to have sufficient funds available to meet current commitments in the normal course of business.

While the Company has not to date incurred any material adverse effects on its results of operations as a result of COVID-19, the full impact of the pandemic is still unknown at this time and will depend on future developments, including the duration of the pandemic, the success of the continued COVID-19 vaccine rollout, and other actions taken by governmental authorities and other third parties in response to the pandemic. If the pandemic continues and the economy cannot fully reopen in the near term, it may negatively impact the demand for loans and other services we offer. Because of the significant uncertainties related to the ultimate duration of the COVID-19 pandemic and its effects on our customers and prospects, and on the local and national economy, there can be no assurances as to how the crisis may ultimately affect the Company's loan portfolio, and business as a whole. As such, the Company could be subject to certain risks, any of which could have a material, adverse effect on our business, financial condition, liquidity, and results of operations.

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Business Combinations

3 Months Ended

Mar. 31, 2021

Business Combinations [Abstract]

Business Combinations

Business Combinations

On July 1, 2020, the Company completed its acquisition of VSB Bancorp, Inc. (“Victory”), parent company of Victory State Bank, in a stock transaction, which after purchase accounting adjustments added $402.8 million to total assets, including $180.4 million to loans, and $354.6 million to deposits, and six branch offices in Staten Island, New York. Under the terms of the merger agreement, each share of Victory common stock was exchanged for 2.0463 shares of Northfield common stock with fractional shares paid out in cash.

The transaction was accounted for under the acquisition method of accounting. Under this method of accounting, the purchase price has been allocated to the respective assets acquired and liabilities assumed based upon their estimated fair values, net of tax, as of July 1, 2020, and results of operations have been included in the Company's consolidated statements of income from that date forward. The excess of consideration paid over the fair value of the net assets acquired has been recorded as goodwill.

The following table summarizes the estimated fair values of the assets acquired and the liabilities assumed at the date of acquisition for Victory (in thousands):

	At July 1, 2020
	Fair Value
Total Purchase Price	$	41,173
Assets acquired:
Cash and cash equivalents	$	72,875
Debt securities available for sale	126,931
Loans	180,431
Accrued interest receivable	1,415
Bank-owned life insurance	5,714
Premises and equipment	7,789
Other assets	4,702
Total assets acquired	399,857
Liabilities assumed:
Deposits	354,592
Other liabilities	7,001
Total liabilities assumed	361,593
Net assets acquired	$	38,264
Goodwill recorded in the merger	$	2,909

The calculation of goodwill is subject to change for up to one year after the date of acquisition as additional information that existed as of the acquisition date estimates and uncertainties become available. As the Company finalizes its review of the acquired assets and liabilities, certain adjustments to the recorded carrying values may be required.

Fair Value Measurement of Assets Assumed and Liabilities Assumed

Described below are the methods used to determine the fair value of the significant assets acquired and liabilities assumed in the Victory acquisition.

Cash and cash equivalents. The estimated fair values of cash and cash equivalents approximate their stated face amounts, as these financial instruments are either due on demand or have short-term maturities.

Debt securities Available-for-Sale. The estimated fair values of the securities were calculated utilizing Level 2 inputs. Prices for the securities were obtained from an independent nationally recognized third-party pricing service.

Loans. The acquired loan portfolio was valued based on current guidance which defines fair value as the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. Level 3 inputs were utilized to value the portfolio and included the use of present value techniques employing cash flow estimates and the incorporated assumptions that marketplace participants would use in estimating fair values. In instances where reliable market information was not available, the Company used its own assumptions in an effort to determine reasonable fair value. Specifically, management utilized three separate fair value analyses which a market participant would employ in estimating the total fair value adjustment. The three separate fair valuation methodologies used were: 1) interest rate loan fair value analysis; 2) general credit fair value adjustment; and 3) specific credit fair value adjustment.

To prepare the interest rate fair value analysis, loans were grouped by characteristics such as loan type, term, collateral and rate. Market rates for similar loans were obtained from various external data sources and reviewed by Company management for reasonableness. The average of these rates was used as the fair value interest rate a market participant would utilize. A present value approach was utilized to calculate the interest rate fair value adjustment.

The general credit fair value adjustment was calculated using a two-part general credit fair value analysis: 1) expected credit losses; and 2) estimated fair value adjustment for qualitative factors. The expected credit losses were calculated using an average of historical losses of the acquired bank and industry bench mark loss rates observed for loans with similar underlying characteristics. The adjustment related to qualitative factors was impacted by general economic conditions and the risk related to lack of familiarity with the originator's underwriting process.

To calculate the specific credit fair value adjustment, management reviewed the acquired loan portfolio for loans meeting the definition of an impaired loan with deteriorated credit quality. Loans meeting this definition were reviewed by comparing the contractual cash flows to expected collectible cash flows. The aggregate expected cash flows less the acquisition date fair value resulted in an accretable yield amount. The accretable yield amount will be recognized over the life of the loans on a level yield basis as an adjustment to yield.

The following is a summary of the credit impaired loans acquired in the Victory acquisition as of the closing date (in thousands):

	July 1, 2020
Contractually required principal and interest	$	7,809
Contractual cash flows not expected to be collected (non-accretable discount)	3,315
Expected cash flows to be collected at acquisition	4,494
Interest component of expected cash flows (accretable yield)	(599)
Fair value of acquired loans	$	3,895

Leases. Five lease obligations were added as part of the acquisition, and the Company recorded a $2.5 million operating lease right-of-use asset and operating lease liability for these lease obligations.

Deposits. The fair values of deposit liabilities with no stated maturity (i.e., non-interest bearing demand accounts, interest-bearing negotiable orders of withdrawal ("NOW"), savings and money market accounts) are equal to the carrying amounts payable on demand. The fair values of certificates of deposit represent contractual cash flows, discounted to present value using interest rates currently offered on deposits with similar characteristics and remaining maturities.

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Debt Securities Available-for-Sale

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Debt Securities Available-for-Sale

Debt Securities Available-for-Sale

The following is a comparative summary of mortgage-backed and other debt securities available-for-sale at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair
	cost		gains		losses		value
U.S. Government agency securities	$	2,758	$	—	$	(68)	$	2,690
Mortgage-backed securities:
Pass-through certificates:
Government sponsored enterprises ("GSEs")	244,399		9,522		(358)		253,563
Real estate mortgage investment conduits ("REMICs"):
GSE	818,623		7,392		(322)		825,693
	1,063,022		16,914		(680)		1,079,256
Other debt securities:
Municipal bonds	102		1		—		103
Corporate bonds	123,732		891		(181)		124,442
Asset-backed securities	733		14		—		747
	124,567		906		(181)		125,292
Total debt securities available-for-sale	$	1,190,347	$	17,820	$	(929)	$	1,207,238

	December 31, 2020
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair
	cost		gains		losses		value
U.S. Government agency securities	$	3,168	$	—	$	(10)	$	3,158
Mortgage-backed securities:
Pass-through certificates:
GSE	270,867		10,720		(244)		281,343
REMICs:
GSE	884,414		7,027		(476)		890,965
Non-GSE	4		—		—		4
	1,155,285		17,747		(720)		1,172,312
Other debt securities:
Municipal bonds	122		1		—		123
Corporate bonds	87,319		1,099		—		88,418
Asset-backed securities	779		15		—		794
	88,220		1,115		—		89,335
Total debt securities available-for-sale	$	1,246,673	$	18,862	$	(730)	$	1,264,805

The following is a summary of the expected maturity distribution of debt securities available-for-sale, other than mortgage-backed securities, at March 31, 2021 (in thousands):

Available-for-sale	Amortized cost		Estimated fair value
Due in one year or less	$	25,288	$	25,872
Due after one year through five years	83,535		83,815
Due after five years through ten years	17,769		17,548
Due after ten years	733		747
	$	127,325	$	127,982

 Contractual maturities for mortgage-backed securities are not included above, as expected maturities on mortgage-backed securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without penalties.

Certain debt securities available-for-sale are pledged or encumbered to secure borrowings under Pledge Agreements and Repurchase Agreements and for other purposes required by law. At March 31, 2021, the fair value of debt securities available-for-sale that were pledged to secure borrowings and deposits was $587.2 million.

For the three months ended March 31, 2021, the Company had gross proceeds of $5.9 million on sales and calls of debt securities available-for-sale, with gross realized gains of $97,000 related to sales of securities and no gross realized losses related to sales of securities. For the three months ended March 31, 2020, the Company had no gross proceeds on sales of debt securities available-for-sale, no gross realized gains, and gross realized losses of $13,000 related to calls of securities. The Company recognized net gains of $364,000 on its trading securities portfolio during the three months ended March 31, 2021, and net losses of $2.0 million during the three months ended March 31, 2020.

Gross unrealized losses on mortgage-backed and other debt securities available-for-sale, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2021, and December 31, 2020, were as follows (in thousands):

	March 31, 2021
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
U.S. Government agency securities	$	(68)	$	2,690	$	—	$	—	$	(68)	$	2,690
Mortgage-backed securities:
Pass-through certificates:
GSE	(353)		33,531		(5)		254		(358)		33,785
REMICs:
GSE	(322)		57,352		—		—		(322)		57,352
Other debt securities:
Corporate bonds	(181)		35,274		—		—		(181)		35,274
Total	$	(924)	$	128,847	$	(5)	$	254	$	(929)	$	129,101

	December 31, 2020
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
U.S. Government agency securities	(10)		$	3,158	$	—	$	—	$	(10)	$	3,158
Mortgage-backed securities:
Pass-through certificates:
GSE	(233)		28,419		(11)		459		(244)		28,878
REMICs:
GSE	(476)		210,569		—		—		(476)		210,569
Total	$	(719)	$	242,146	$	(11)	$	459	$	(730)	$	242,605

The Company held six pass-through mortgage-backed securities issued or guaranteed by GSEs that were in a continuous unrealized loss position of twelve months or greater at March 31, 2021. There were 22 pass-through mortgage-backed securities issued or guaranteed by GSEs, 44 REMIC mortgage-backed securities issued or guaranteed by GSEs, five corporate bonds and one U.S. Government agency security that were in an unrealized loss position of less than 12 months at March 31, 2021. All securities referred to above were rated investment grade at March 31, 2021.

Available for sale debt securities in unrealized loss positions are evaluated for impairment related to credit losses on a quarterly basis. In performing an assessment of whether any decline in fair value is due to a credit loss, the Company considers the extent to which the fair value is less than the amortized cost, changes in credit ratings, any adverse economic conditions, as well as all relevant information at the individual security level such as credit deterioration of the issuer or collateral underlying the security. In assessing the impairment, the Company compares the present value of cash flows expected to be collected with the amortized cost basis of the security. If it is determined that the decline in fair value was due to credit losses, an allowance for credit losses is recorded, limited to the amount the fair value is less than amortized cost basis. The Company did not recognize any allowance for credit losses on its available-for-sale debt securities during the three months ended March 31, 2021. 

The non-credit related decrease in the fair value, such as a decline due to changes in market interest rates, is recorded in other comprehensive income, net of tax. The Company also assesses the intent to sell the securities (as well as the likelihood of a near-term recovery). If the Company intends to sell an available for sale debt security or it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis, the debt security is written down to its fair value and the write down is charged to the debt security’s fair value at the reporting date with any incremental impairment reported in earnings.

The Company has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Accrued interest receivable associated with debt securities available-for-sale totaling $1.5 million at March 31, 2021, is reported in accrued interest receivable on the consolidated balance sheet.

Equity SecuritiesAt March 31, 2021, and December 31, 2020, equity securities totaled $473,000 and $253,000, respectively. Equity securities consist of money market mutual funds recorded at fair value.

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Debt Securities Held-to-Maturity

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Debt Securities Held-to-Maturity

Debt Securities Held-to-Maturity

The following is a summary of mortgage-backed securities held-to-maturity at March 31, 2021, and December 31, 2020 (in thousands): 

	March 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	6,913	$	328	$	—	$	7,241
Total securities held-to-maturity	$	6,913	$	328	$	—	$	7,241

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	7,234	$	340	$	—	$	7,574
Total securities held-to-maturity	$	7,234	$	340	$	—	$	7,574

Contractual maturities for mortgage-backed securities are not presented, as expected maturities on mortgage-backed securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without penalties. There were no sales of held-to-maturity securities for the three months ended March 31, 2021 or March 31, 2020.

At March 31, 2021, debt securities held-to-maturity with a carrying value of $5.9 million were pledged to secure borrowings and deposits.

At March 31, 2021 and December 31, 2020, there were no debt securities held-to-maturity in an unrealized loss position.

The Company's held-to-maturity securities are residential mortgage-backed securities issued by Ginnie Mae, Freddie MAC and Fannie Mae, and it is expected that the securities will not be settled at prices less than the amortized cost bases of the securities as such securities are backed by the full faith and credit of and/or guaranteed by the U.S. government. Accordingly, no allowance for credit losses has been recorded for these securities.

The Company has made the accounting policy election to exclude accrued interest receivable on held-to-maturity securities from the estimate of credit losses. Accrued interest receivable associated with held-to-maturity securities totaling $20,800 at March 31, 2021, is reported in accrued interest receivable on the consolidated balance sheet.

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Equity Securities

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Equity Securities

Debt Securities Available-for-Sale

The following is a comparative summary of mortgage-backed and other debt securities available-for-sale at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair
	cost		gains		losses		value
U.S. Government agency securities	$	2,758	$	—	$	(68)	$	2,690
Mortgage-backed securities:
Pass-through certificates:
Government sponsored enterprises ("GSEs")	244,399		9,522		(358)		253,563
Real estate mortgage investment conduits ("REMICs"):
GSE	818,623		7,392		(322)		825,693
	1,063,022		16,914		(680)		1,079,256
Other debt securities:
Municipal bonds	102		1		—		103
Corporate bonds	123,732		891		(181)		124,442
Asset-backed securities	733		14		—		747
	124,567		906		(181)		125,292
Total debt securities available-for-sale	$	1,190,347	$	17,820	$	(929)	$	1,207,238

	December 31, 2020
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair
	cost		gains		losses		value
U.S. Government agency securities	$	3,168	$	—	$	(10)	$	3,158
Mortgage-backed securities:
Pass-through certificates:
GSE	270,867		10,720		(244)		281,343
REMICs:
GSE	884,414		7,027		(476)		890,965
Non-GSE	4		—		—		4
	1,155,285		17,747		(720)		1,172,312
Other debt securities:
Municipal bonds	122		1		—		123
Corporate bonds	87,319		1,099		—		88,418
Asset-backed securities	779		15		—		794
	88,220		1,115		—		89,335
Total debt securities available-for-sale	$	1,246,673	$	18,862	$	(730)	$	1,264,805

The following is a summary of the expected maturity distribution of debt securities available-for-sale, other than mortgage-backed securities, at March 31, 2021 (in thousands):

Available-for-sale	Amortized cost		Estimated fair value
Due in one year or less	$	25,288	$	25,872
Due after one year through five years	83,535		83,815
Due after five years through ten years	17,769		17,548
Due after ten years	733		747
	$	127,325	$	127,982

 Contractual maturities for mortgage-backed securities are not included above, as expected maturities on mortgage-backed securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without penalties.

Certain debt securities available-for-sale are pledged or encumbered to secure borrowings under Pledge Agreements and Repurchase Agreements and for other purposes required by law. At March 31, 2021, the fair value of debt securities available-for-sale that were pledged to secure borrowings and deposits was $587.2 million.

For the three months ended March 31, 2021, the Company had gross proceeds of $5.9 million on sales and calls of debt securities available-for-sale, with gross realized gains of $97,000 related to sales of securities and no gross realized losses related to sales of securities. For the three months ended March 31, 2020, the Company had no gross proceeds on sales of debt securities available-for-sale, no gross realized gains, and gross realized losses of $13,000 related to calls of securities. The Company recognized net gains of $364,000 on its trading securities portfolio during the three months ended March 31, 2021, and net losses of $2.0 million during the three months ended March 31, 2020.

Gross unrealized losses on mortgage-backed and other debt securities available-for-sale, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2021, and December 31, 2020, were as follows (in thousands):

	March 31, 2021
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
U.S. Government agency securities	$	(68)	$	2,690	$	—	$	—	$	(68)	$	2,690
Mortgage-backed securities:
Pass-through certificates:
GSE	(353)		33,531		(5)		254		(358)		33,785
REMICs:
GSE	(322)		57,352		—		—		(322)		57,352
Other debt securities:
Corporate bonds	(181)		35,274		—		—		(181)		35,274
Total	$	(924)	$	128,847	$	(5)	$	254	$	(929)	$	129,101

	December 31, 2020
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
U.S. Government agency securities	(10)		$	3,158	$	—	$	—	$	(10)	$	3,158
Mortgage-backed securities:
Pass-through certificates:
GSE	(233)		28,419		(11)		459		(244)		28,878
REMICs:
GSE	(476)		210,569		—		—		(476)		210,569
Total	$	(719)	$	242,146	$	(11)	$	459	$	(730)	$	242,605

The Company held six pass-through mortgage-backed securities issued or guaranteed by GSEs that were in a continuous unrealized loss position of twelve months or greater at March 31, 2021. There were 22 pass-through mortgage-backed securities issued or guaranteed by GSEs, 44 REMIC mortgage-backed securities issued or guaranteed by GSEs, five corporate bonds and one U.S. Government agency security that were in an unrealized loss position of less than 12 months at March 31, 2021. All securities referred to above were rated investment grade at March 31, 2021.

Available for sale debt securities in unrealized loss positions are evaluated for impairment related to credit losses on a quarterly basis. In performing an assessment of whether any decline in fair value is due to a credit loss, the Company considers the extent to which the fair value is less than the amortized cost, changes in credit ratings, any adverse economic conditions, as well as all relevant information at the individual security level such as credit deterioration of the issuer or collateral underlying the security. In assessing the impairment, the Company compares the present value of cash flows expected to be collected with the amortized cost basis of the security. If it is determined that the decline in fair value was due to credit losses, an allowance for credit losses is recorded, limited to the amount the fair value is less than amortized cost basis. The Company did not recognize any allowance for credit losses on its available-for-sale debt securities during the three months ended March 31, 2021. 

The non-credit related decrease in the fair value, such as a decline due to changes in market interest rates, is recorded in other comprehensive income, net of tax. The Company also assesses the intent to sell the securities (as well as the likelihood of a near-term recovery). If the Company intends to sell an available for sale debt security or it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis, the debt security is written down to its fair value and the write down is charged to the debt security’s fair value at the reporting date with any incremental impairment reported in earnings.

The Company has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Accrued interest receivable associated with debt securities available-for-sale totaling $1.5 million at March 31, 2021, is reported in accrued interest receivable on the consolidated balance sheet.

Equity SecuritiesAt March 31, 2021, and December 31, 2020, equity securities totaled $473,000 and $253,000, respectively. Equity securities consist of money market mutual funds recorded at fair value.

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Loans

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Loans

Loans

On January 1, 2021, the Company adopted the CECL standard for measuring credit losses, which replaced the incurred loss methodology. As a result of adopting CECL, the Company combined it’s originated loan portfolio and the acquired loan portfolio into the respective portfolio segments. Other than to combine the originated and non-PCD acquired loan portfolios, the Company's portfolio segments and loan classes remain unchanged following the adoption of the CECL standard. Prior period disclosures have been revised to conform to current period presentation (by combining originated and acquired portfolio segments), however, the Company did not recast comparative financial information and that is still presented in accordance with previous applicable U.S. GAAP.

The following table summarizes the Company’s loans held-for-investment (in thousands):

	March 31,		December 31,
	2021		2020
Real estate loans:
Multifamily	$	2,571,409	$	2,509,310
Commercial mortgage	734,113		716,973
One-to-four family residential mortgage	202,948		210,817
Home equity and lines of credit	93,118		91,126
Construction and land	77,206		74,318
Total real estate loans	3,678,794		3,602,544
Commercial and industrial loans (1)	234,518		194,352
Other loans	1,658		3,029
Total commercial and industrial and other loans	236,176		197,381
Deferred origination loan costs, net (1)	—		4,795
Loans held-for-investment, net (excluding PCD/PCI)	3,914,970		3,804,720
PCD/PCI loans	18,045		18,518
Total Loans held-for-investment, net	3,933,015		3,823,238
Allowance for loan losses	(43,197)		(37,607)
Net loans held-for-investment	$	3,889,818	$	3,785,631

(1) Under CECL origination deferred fees, deferred fees on acquired loans, and purchase accounting adjustments in connection with loans acquired are included in loans by respective portfolio.

(2) Included in commercial and industrial loans at March 31, 2021 and December 31, 2020 are PPP loans totaling $167.9 million and $126.5 million, respectively.

The Company had no loans held-for-sale at March 31, 2021. At December 31, 2020, loans held-for-sale totaled $19.9 million.

In addition to originating loans, the Company may acquire loans through portfolio purchases or acquisitions of other companies. Purchased loans that have evidence of more than insignificant credit deterioration since origination are deemed purchased credit deteriorated (“PCD”) loans. In accordance with ASU 2016-13, with its adoption of the CECL standard, the Company did not reassess whether previously recognized purchased credit impaired (“PCI”) loans accounted for under prior accounting guidance met the criteria of a PCD loan as of the date of adoption and all loans considered to be PCI prior to the adoption of CECL were converted to PCD upon adoption. For PCD loans, each loan pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows. PCD loans totaled $18.0 million at March 31, 2021, as compared to $18.5 million of PCI loans at December 31, 2020. The majority of the PCD loan balance is attributable to those loans acquired as part of a Federal Deposit Insurance Corporation-assisted transaction. At March 31, 2021, PCD loans consisted of approximately 16% one-to-four family residential loans, 26% commercial real estate loans and 44% commercial and industrial loans, with the remaining balance in construction and home equity loans. At December 31, 2020, PCI loans consisted of approximately 22% one-to-four family residential loans, 23% commercial real estate loans and 40% commercial and industrial loans, with the remaining balance in home equity loans.

Credit Quality Indicators

The Company monitors the credit quality of its loan portfolio on a regular basis. Credit quality is monitored by reviewing certain credit quality indicators. Management has determined that loan-to-value ratios (at period end) and internally assigned credit risk ratings by loan type are the key credit quality indicators that best measure the credit quality of the Company’s loan receivables. Loan-to-value (“LTV”) ratios used by management in monitoring credit quality are based on current period loan balances and original appraised values at the time of origination (unless a current appraisal has been obtained as a result of the loan being deemed impaired). 

The Company maintains a credit risk rating system as part of the risk assessment of its loan portfolio. The Company’s lending officers are required to assign a credit risk rating to each loan in their portfolio at origination. This risk rating is reviewed periodically and adjusted if necessary. Monthly, management presents monitored assets to the loan committee. In addition, the Company engages a third-party independent loan reviewer that performs semi-annual reviews of a sample of loans, validating the credit risk ratings assigned to such loans. The credit risk ratings play an important role in the establishment of the provision for loan losses and the allowance for loan losses for originated loans held-for-investment. After determining the loss factor for each originated portfolio segment held-for-investment, the collectively evaluated for impairment balance of the held-for-investment portfolio is multiplied by the collectively evaluated for impairment loss factor for the respective portfolio segment in order to determine the allowance for loans collectively evaluated for impairment.

    When assigning a risk rating to a loan, management utilizes the Bank’s internal nine-point credit risk rating system. 

1.Strong

2.Good

3.Acceptable

4.Adequate

5.Watch

6.Special Mention

7.Substandard

8.Doubtful

9.Loss

Loans rated 1 to 5 are considered pass ratings. An asset is classified substandard if it is inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Substandard assets have well defined weaknesses based on objective evidence, and are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Assets classified as doubtful have all of the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses present make collection or liquidation in full highly questionable and improbable based on current circumstances. Assets classified as loss are those considered uncollectible and of such little value that their continuance as assets is not warranted. Assets which do not currently expose the Company to sufficient risk to warrant classification in one of the aforementioned categories, but possess weaknesses, are required to be designated special mention.

The following table presents the Company’s loans held-for-investment, excluding PCD loans, by loan class, credit risk ratings and year of origination, as of March 31, 2021 (in thousands):

	March 31, 2021
	2021		2020		2019		2018		2017		Prior		Revolving Loans		Total
Real Estate:
Multifamily
Pass	$	161,305	$	562,841	$	407,309	$	345,635	$	283,681	$	793,689	$	44	$	2,554,504
Special Mention	—		—		—		—		—		450		—		450
Substandard	—		—		4,691		3,361		—		8,403		—		16,455
Total multifamily	161,305		562,841		412,000		348,996		283,681		802,542		44		2,571,409
Commercial
Pass	33,829		72,556		100,207		92,969		66,730		312,858		3,583		682,732
Special Mention	—		—		1,297		9,046		—		9,506		500		20,349
Substandard	—		2,470		9,660		328		4,079		14,495		—		31,032
Total commercial	33,829		75,026		111,164		102,343		70,809		336,859		4,083		734,113
One-to-four family residential
Pass	966		9,689		14,189		15,717		13,097		141,652		1,613		196,923
Special Mention	—		—		467		—		—		2,428		—		2,895
Substandard	—		—		600		—		—		2,530		—		3,130
Total one-to-four family residential	966		9,689		15,256		15,717		13,097		146,610		1,613		202,948
Construction and land
Pass	6,654		14,328		5,760		36,750		7,515		3,641		1,018		75,666
Special Mention	—		—		—		—		—		—		—		—
Substandard	—		—		1,150		390		—		—		—		1,540
Total construction and land	6,654		14,328		6,910		37,140		7,515		3,641		1,018		77,206
Home equity and lines of credit
Pass	3,831		14,641		9,894		8,832		3,315		13,848		38,019		92,380
Special Mention	—		—		—		—		—		306		—		306
Substandard	—		—		99		88		—		245		—		432
Total home equity and lines of credit	3,831		14,641		9,993		8,920		3,315		14,399		38,019		93,118
Total Real Estate Loans	206,585		676,525		555,323		513,116		378,417		1,304,051		44,777		3,678,794
Commercial and industrial
Pass	67,372		113,363		6,407		3,462		1,356		12,961		26,406		231,327
Special Mention	—		81		210		42		147		324		—		804
Substandard	—		499		360		666		—		862		—		2,387
Total commercial and industrial	67,372		113,943		6,977		4,170		1,503		14,147		26,406		234,518
Other
Pass	1,257		191		32		51		—		51		73		1,655
Substandard	—		—		—		—		—		3		—		3
Total other	1,257		191		32		51		—		54		73		1,658
Total loans held-for-investment, net	$	275,214	$	790,659	$	562,332	$	517,337	$	379,920	$	1,318,252	$	71,256	$	3,914,970

The following table details the recorded investment of loans held-for-investment, excluding PCI loans, net of deferred fees and costs, by loan type and credit quality indicator at December 31, 2020 (in thousands):

	At December 31, 2020
	Real Estate
	Multifamily		Commercial		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total
Internal Risk Rating
Pass	$	2,497,556	$	667,568	$	207,633	$	74,351	$	92,385	$	189,372	$	3,026	$	3,731,891
Special Mention	458		20,422		2,456		—		311		498		—		24,145
Substandard	14,920		29,576		2,133		—		441		1,611		3		48,684
Total loans held-for-investment, net	$	2,512,934	$	717,566	$	212,222	$	74,351	$	93,137	$	191,481	$	3,029	$	3,804,720

Past Due and Non-Accrual Loans

Included in loans receivable held-for-investment are loans for which the accrual of interest income has been discontinued due to deterioration in the financial condition of the borrowers. The recorded investment of these non-accrual loans was $8.4 million and $8.5 million at March 31, 2021, and December 31, 2020, respectively. Generally, loans are placed on non-accrual status when they become 90 days or more delinquent, or sooner if considered appropriate by management, and remain on non-accrual status until they are brought current, have six consecutive months of performance under the loan terms, and factors indicating reasonable doubt about the timely collection of payments no longer exist. Therefore, loans may be current in accordance with their loan terms, or may be less than 90 days delinquent and still be on a non-accruing status.    

When an individual loan no longer demonstrates the similar credit risk characteristics as other loans within its current segment, the Company evaluates each for expected credit losses on an individual basis. All non-accrual loans $500,000 and above and all loans designated as troubled debt restructures (“TDRs”) are individually evaluated. The non-accrual amounts included in loans individually evaluated for impairment were $5.4 million and $5.5 million at March 31, 2021, and December 31, 2020, respectively. Loans on non-accrual status with principal balances less than $500,000, and therefore not individually evaluated for impairment, amounted to $3.0 million at March 31, 2021, and $3.0 million at December 31, 2020. Loans past due 90 days or more and still accruing interest were $1.6 million at March 31, 2021, and $1.1 million at December 31, 2020, and consisted of loans that are considered well-secured and in the process of collection.

The Company had no loans held-for-sale at March 31, 2021. At December 31, 2020, the Company had $19.9 million in loans held-for-sale. At December 31, 2020, the loans held-for-sale were comprised of commercial real estate and multifamily loans, primarily accommodation (hotel or motel) loans that were modified in the form of interest and/or principal payment deferrals due to COVID-19 related hardships, and had not returned to contractual payments after 180 days of relief. The sale of these loans was completed in March 2021.

The following tables set forth the detail, and delinquency status, of non-performing loans (non-accrual loans and loans past due 90 days or more and still accruing), net of deferred fees and costs, at March 31, 2021, and December 31, 2020, excluding PCD/PCI loans (in thousands):

	March 31, 2021
	Total Non-Performing Loans
	Non-Accruing Loans
	Current		30-89 Days Past Due		90 Days or More Past Due		Total		90 Days or More Past Due and Accruing		Total Non-Performing Loans
Loans held-for-investment:
Real estate loans:
Commercial
Substandard	$	2,817	$	100	$	2,044	$	4,961	$	219	$	5,180
Total commercial	2,817		100		2,044		4,961		219		5,180
One-to-four family residential
Substandard	406		—		399		805		172		977
Total one-to-four family residential	406		—		399		805		172		977
Construction and land
Substandard	—		—		1,150		1,150		—		1,150
Total construction and land	—		—		1,150		1,150		—		1,150
Multifamily
Substandard	—		—		1,145		1,145		516		1,661
Total multifamily	—		—		1,145		1,145		516		1,661
Home equity and lines of credit
Substandard	58		—		129		187		—		187
Total home equity and lines of credit	58		—		129		187		—		187
Total real estate	3,281		100		4,867		8,248		907		9,155
Commercial and industrial loans
Pass	—		—		—		—		92		92
Special Mention	—		—		—		—		85		85
Substandard	1		36		161		198		561		759
Total commercial and industrial loans	1		36		161		198		738		936
Other loans
Pass	—		—		—		—		3		3
Total other	—		—		—		—		3		3
Total non-performing loans	$	3,282	$	136	$	5,028	$	8,446	$	1,648	$	10,094

	December 31, 2020
	Total Non-Performing Loans
	Non-Accruing Loans
	Current		30-89 Days Past Due		90 Days or More Past Due		Total		90 Days or More Past Due and Accruing		Total Non-Performing Loans
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	—	$	—	$	—	$	—	$	500	$	500
Substandard	2,829		537		2,863		6,229		—		$	6,229
Total commercial	2,829		537		2,863		6,229		500		6,729
One-to-four family residential
Substandard	413		—		493		906		174		1,080
Total one-to-four family residential	413		—		493		906		174		1,080
Multifamily
Substandard	—		—		1,153		1,153		—		1,153
Total multifamily	—		—		1,153		1,153		—		1,153
Home equity and lines of credit
Substandard	60		—		131		191		—		191
Total home equity and lines of credit	60		—		131		191		—		191
Total real estate	3,302		537		4,640		8,479		674		9,153
Commercial and industrial loans
Pass	—		—		—		—		101		101
Special Mention	—		—		—		—		85		85
Substandard	—		—		37		37		250		287
Total commercial and industrial loans	—		—		37		37		436		473
Other loans
Pass	—		—		—		—		3		3
Total other	—		—		—		—		3		3
Total non-performing loans	$	3,302	$	537	$	4,677	$	8,516	$	1,113	$	9,629

The following tables set forth the detail and delinquency status of loans held-for-investment, excluding PCD/PCI loans, net of deferred fees and costs, at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
			Past Due Loans
	30-89 Days Past Due		90 Days or More Past Due		90 Days or More Past Due and Accruing		Total Past Due		Current		Total Loans Receivable, net
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	1,651	$	—	$	—	$	1,651	$	681,081	$	682,732
Special Mention	—		—		—		—		20,349		20,349
Substandard	2,906		2,044		219		5,169		25,863		31,032
Total commercial	4,557		2,044		219		6,820		727,293		734,113
One-to-four family residential
Pass	1,827		—		—		1,827		195,096		196,923
Special Mention	1,085		—		—		1,085		1,810		2,895
Substandard	1,111		399		172		1,682		1,448		3,130
Total one-to-four family residential	4,023		399		172		4,594		198,354		202,948
Construction and land
Pass	—		—		—		—		75,666		75,666
Substandard	390		1,150		—		1,540		—		1,540
Total construction and land	390		1,150		—		1,540		75,666		77,206
Multifamily
Pass	1,256		—		—		1,256		2,553,248		2,554,504
Special Mention	—		—		—		—		450		450
Substandard	1,163		1,145		516		2,824		13,631		16,455
Total multifamily	2,419		1,145		516		4,080		2,567,329		2,571,409
Home equity and lines of credit
Pass	229		—		—		229		92,151		92,380
Special Mention	44		—		—		44		262		306
Substandard	99		129		—		228		204		432
Total home equity and lines of credit	372		129		—		501		92,617		93,118
Total real estate	11,761		4,867		907		17,535		3,661,259		3,678,794
Commercial and industrial
Pass	1,471		—		92		1,563		229,764		231,327
Special Mention	259		—		85		344		460		804
Substandard	785		161		561		1,507		880		2,387
Total commercial and industrial	2,515		161		738		3,414		231,104		234,518
Other loans
Pass	7		—		—		7		1,648		1,655
Substandard	—		—		3		3		—		3
Total other loans	7		—		3		10		1,648		1,658
Total loans held-for-investment	$	14,283	$	5,028	$	1,648	$	20,959	$	3,894,011	$	3,914,970

	December 31, 2020
	Performing (Accruing) Loans
	0-29 Days Past Due		30-89 Days Past Due		Total		Non-Performing Loans		Total Loans Receivable, net
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	660,996	$	6,072	$	667,068	$	500	$	667,568
Special Mention	20,350		72		20,422		—		20,422
Substandard	20,699		2,648		23,347		6,229		29,576
Total commercial	702,045		8,792		710,837		6,729		717,566
One-to-four family residential
Pass	207,351		282		207,633		—		207,633
Special Mention	1,586		870		2,456		—		2,456
Substandard	1,053		—		1,053		1,080		2,133
Total one-to-four family residential	209,990		1,152		211,142		1,080		212,222
Construction and land
Pass	73,357		994		74,351		—		74,351
Total construction and land	73,357		994		74,351		—		74,351
Multifamily
Pass	2,496,273		1,283		2,497,556		—		2,497,556
Special Mention	458		—		458		—		458
Substandard	13,157		610		13,767		1,153		14,920
Total multifamily	2,509,888		1,893		2,511,781		1,153		2,512,934
Home equity and lines of credit
Pass	92,305		80		92,385		—		92,385
Special Mention	111		200		311		—		311
Substandard	150		100		250		191		441
Total home equity and lines of credit	92,566		380		92,946		191		93,137
Total real estate	3,587,846		13,211		3,601,057		9,153		3,610,210
Commercial and industrial
Pass	188,639		632		189,271		101		189,372
Special Mention	352		61		413		85		498
Substandard	1,257		67		1,324		287		1,611
Total commercial and industrial	190,248		760		191,008		473		191,481
Other loans
Pass	3,015		11		3,026		—		3,026
Substandard	—		—		—		3		3
Total other loans	3,015		11		3,026		3		3,029
Total loans held-for-investment, net	$	3,781,109	$	13,982	$	3,795,091	$	9,629	$	3,804,720

The following table summarizes information on non-accrual loans, excluding PCD loans, at March 31, 2021 (in thousands):

	At or for the Three Months Ended
	March 31, 2021
	Recorded Investment		Unpaid Principal Balance		With No Related Allowance		Interest Income
Real estate loans:
Commercial	$	4,961	$	5,471	$	3,275	$	25
One-to-four family residential	805		836		228		6
Construction and land	1,150		1,150		1,150		—
Multifamily	1,145		1,154		—		14
Home equity and lines of credit	187		436		—		2
Commercial and industrial	198		392		1		2
Total non-accrual loans	$	8,446	$	9,439	$	4,654	$	49

The following table summarizes impaired loans as of December 31, 2020 (in thousands):

	December 31, 2020
	Recorded Investment		Unpaid Principal Balance		Related Allowance
With No Allowance Recorded:
Real estate loans:
Commercial	$	8,838	$	10,076	$	—
One-to-four family residential	1,903		2,032		—
Multifamily	626		1,097		—
Home equity and lines of credit	15		15		—
Total Real Estate	11,382		13,220		—
With a Related Allowance Recorded:
Real estate loans:
Commercial	1,812		2,244		(66)
Home equity and lines of credit	32		32		(3)
Total Real Estate	1,844		2,276		(69)
Commercial and industrial loans	16		16		(4)
Total:
Real estate loans
Commercial	10,650		12,320		(66)
One-to-four family residential	1,903		2,032		—
Multifamily	626		1,097		—
Home equity and lines of credit	47		47		(3)
Commercial and industrial loans	16		16		(4)
	$	13,242	$	15,512	$	(73)

Included in the table above at December 31, 2020, are impaired loans with carrying balances of $7.8 million that were not written down by charge-offs or for which there are no specific reserves in our allowance for loan losses. Loans not written down by charge-offs or specific reserves at December 31, 2020, are considered to have sufficient collateral values, less costs to sell, to support the carrying balances of the loans.

The following table summarizes the average recorded investment in impaired loans, excluding PCI loans, and interest income recognized as of, and for, the three months March 31, 2020 (in thousands):

	March 31, 2020
	Average Recorded Investment		Interest Income
With No Allowance Recorded:
Real estate loans:
Commercial	$	16,198	$	112
One-to-four family residential	2,464		33
Multifamily	1,036		13
Home equity and lines of credit	21		—
Commercial and industrial loans	38		—
With a Related Allowance Recorded:
Real estate loans:
Commercial	930		—
Home equity and lines of credit	33		1
Commercial and industrial loans	18		—
Total:
Real estate loans
Commercial	17,128		112
One-to-four family residential	2,464		33
Multifamily	1,036		13
Home equity and lines of credit	54		1
Commercial and industrial loans	56		—
	$	20,738	$	159

Collateral-Dependent Loans

Loans for which the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral are considered to be collateral-dependent loans. Collateral can have a significant financial effect in mitigating exposure to credit risk and, where there is sufficient collateral, an allowance for expected credit losses is not recognized or is minimal. For collateral-dependent loans, the allowance for expected credit losses is individually assessed based on the fair value of the collateral less estimated costs of sale. The Company's collateral-dependent loans are secured by real estate. Collateral values are generally based on appraisals which are adjusted for changes in market indices. As of March 31, 2021, and December 31, 2020, the Company had $9.8 million and $10.0 million of collateral-dependent impaired loans, respectively. The collateral-dependent loans at March 31, 2021 consisted of $7.6 million in commercial real estate loans, $1.2 million in construction loans, $610,000 in multifamily loans, and $388,000 in one-to-four family residential loans. For the three months ended March 31, 2021, there was no significant deterioration or changes in the collateral securing these loans.

Troubled Debt Restructured Loans

There were no loans modified in a TDR during the three months ended March 31, 2021 or 2020.

In response to the COVID-19 pandemic and its economic impact to customers, a short-term modification program that complied with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus was implemented to provide temporary payment relief to those borrowers directly impacted by COVID-19. The program allows for deferral of payments for 90 days, which may extend for an additional 90 day periods, with modifications in the form of payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment. As of March 31, 2021, the Company had 24 loan modifications (excluding PCD loans) with principal and/or interest payment deferrals on outstanding loan balances of $28.8 million. Of these 24 payment deferrals, seven were principal deferrals totaling $8.8 million, and 17 were principal and interest deferrals totaling $20.0 million. As these deferrals were current as of December 31, 2019, or the date of modification, these loans are not considered TDRs. Loans in deferment status (“COVID-19 Modified Loans”) will continue to accrue interest during the deferment period unless otherwise classified as nonperforming. COVID-19 Modified Loans are required to make escrow payments for real estate taxes and insurance, if applicable. For loans given relief of interest, the deferred interest is generally to be paid back over a period not to exceed 18 months. Principal deferrals may be brought current or recast into outstanding principal at time of rate reset or repaid at the end of the loan's contractual term. COVID-19 Modified Loan agreements generally also include covenants that prohibit distributions, bonuses, or payments of management fees to related entities until all deferred payments are made.

At March 31, 2021 and December 31, 2020, the Company had TDRs of $11.7 million and $12.1 million, respectively.

Management classifies all TDRs as loans individually evaluated for impairment. Loans individually evaluated for impairment are assessed to determine that the loan’s carrying value is not in excess of the estimated fair value of the collateral less cost to sell, if the loan is collateral-dependent, or the present value of the expected future cash flows, if the loan is not collateral-dependent. Management performs an evaluation of each impaired loan and generally obtains updated appraisals as part of the evaluation. In addition, management adjusts estimated fair values down to appropriately consider recent market conditions, our willingness to accept a lower sales price to effect a quick sale, and costs to dispose of any supporting collateral. Determining the estimated fair value of underlying collateral (and related costs to sell) can be difficult in illiquid real estate markets and is subject to significant assumptions and estimates. Management employs an independent third-party management firm that specializes in appraisal preparation and review to ascertain the reasonableness of updated appraisals. Projecting the expected cash flows under TDRs which are not collateral-dependent is inherently subjective and requires, among other things, an evaluation of the borrower’s current and projected financial condition. Actual results may be significantly different than our projections and our established allowance for loan losses on these loans, which could have a material effect on our financial results.

At March 31, 2021, there were no TDRs that were restructured during the preceding twelve months that subsequently defaulted. At March 31, 2020, there was one TDR with a balance of $27,000 that was restructured during the preceding twelve months that subsequently defaulted.

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Allowance for Credit Losses on Loans (“ACL”)

3 Months Ended

Mar. 31, 2021

Credit Loss [Abstract]

Allowance for Credit Losses on Loans (“ACL”)

Allowance for Credit Losses on Loans (“ACL”)

On January 1, 2021, the Company adopted the CECL standard, which requires the measurement of expected credit losses for financial assets measured at amortized cost, including loans, and certain off-balance-sheet credit exposures. As a result of the adoption of CECL, the Company recorded a $10.4 million increase to its allowance for credit losses on loans, including $6.8 million related to PCD loans. For PCD loans, the allowance for credit losses recorded is recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity.

Under the CECL standard, the Company determines the ACL on loans based upon a consideration of its historical portfolio loss experience, current borrower-specific risk characteristics, forecasts of future economic conditions, reversion period, prepayments and qualitative adjustments. The allowance is measured on a collective (loan segment) basis when similar risk characteristics exist. Loans that do not share common risk characteristics are evaluated on an individual basis and are excluded from the collective evaluation. Accrued interest on loans is excluded from the calculation of the ACL due to the Company's established non-accrual policy which results in the reversal of uncollectible accrued interest on non-accrual loans against interest income in a timely manner. Accrued interest receivable on loans held-for-investment totaled $13.2 million at March 31, 2021 and is reported in accrued interest receivable on the consolidated balance sheet.

The Company’s loan portfolio segmentation includes: multifamily, commercial real estate, one-to-four family residential mortgage, home equity and lines of credit, commercial and industrial, construction and other consumer loans.

Allowance for Collectively Evaluated Loans Held-for-Investment

In estimating the quantitative component of the allowance on a collective basis, the Company uses a risk rating migration model which calculates an expected life of loan loss percentage for each loan by generating probability of default and loss given default metrics. The metrics are based on the migration of loans from performing to loss by credit quality rating or delinquency categories using historical life-of-loan analysis periods for each loan portfolio pool, and the severity of loss, based on the aggregate net lifetime losses incurred using the Company's own historical loss experience and comparable peer data loss history. The model's expected losses based on loss history are adjusted for qualitative factors. Among other things, these adjustments include and account for differences in: (i) changes in lending policies and procedures; (ii) changes in local, regional, national, and international economic and business conditions and developments that affect the collectability of our portfolio, including the condition of various market segments; (iii) changes in the experience, ability and depth of lending management and other relevant staff; (iv) changes in the quality of our loan review system; (v) the existence and effect of any concentrations of credit, and changes in the level of such concentrations; and (vi) the effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in our existing portfolio.

The Company utilizes a two-year reasonable and supportable forecast period after which estimated losses revert to historical loss experience immediately for the remaining life of the loan. In establishing its estimate of expected credit losses, the Company utilizes five externally-sourced forward-looking economic scenarios developed by Moody's Analytics (“Moody's”).     

Management utilizes five Moody's scenarios so as to incorporate uncertainties related to the unprecedented economic environment arising from the COVID-19 pandemic. These scenarios, which range from more benign to more severe economic outlooks, represent a ‘most likely outcome’ (the “Baseline” scenario) and four less likely scenarios referred to as the “Upside” scenarios and the “Downside” scenarios. Each scenario is assigned a weighting with a majority of the weighting placed on the Baseline scenario and lower weights placed on both the Upside and Downside scenarios. The weighting assigned by management is based on the economic outlook and available information at the reporting date. The model projects economic variables under each scenario based on detailed statistical analyses. The Company has identified and selected key variables that most closely correlated to its historical credit performance, which include: Gross domestic product, unemployment, and three collateral indices: the Commercial Property Price Index, the Commercial Property Price Apartment Index and the Case-Shiller Home Price Index.

Allowance for Individually Evaluated Loans

The Company measures specific reserves for individual loans that do not share common risk characteristics with other loans, consisting of all TDRs and non-accrual loans with an outstanding balance of $500,000 or greater. Loans individually evaluated for impairment are assessed to determine that the loan’s carrying value is not in excess of the estimated fair value of the collateral less cost to sell, if the loan is collateral-dependent, or the present value of the expected future cash flows, if the loan is not collateral-dependent. Management performs an evaluation of each impaired loan and generally obtains updated appraisals as part of the evaluation. In addition, management adjusts estimated fair values down to appropriately consider recent market conditions, our willingness to accept a lower sales price to effect a quick sale, and costs to dispose of any supporting collateral. Determining the estimated fair value of underlying collateral (and related costs to sell) can be difficult in illiquid real estate markets and is subject to significant assumptions and estimates. Management employs an independent third-party management firm that specializes in appraisal preparation and review to ascertain the reasonableness of updated appraisals. Projecting the expected cash flows under troubled debt restructurings which are not collateral-dependent is inherently subjective and requires, among other things, an evaluation of the borrower’s current and projected financial condition. Actual results may be significantly different than our projections and our established allowance for credit losses on these loans, which could have a material effect on our financial results. Individually impaired loans that have no impairment losses are not considered for collective allowances described earlier. At March 31, 2021 and December 31, 2020, the specific component of the ACL for loans individually evaluated for impairment was $77,000 and $73,000, respectively.

Allowance for Credit Losses – Off-Balance Sheet Exposures

An ACL for off-balance-sheet exposures represents an estimate of expected credit losses arising from off-balance sheet exposures such as loan commitments, standby letters of credit and unused lines of credit (loans on books already). Commitments to fund unused lines of credit are agreements to lend additional funds to customers as long as there have been no violations of any of the conditions established in the agreements (original or restructured). Commitments to originate loans generally have a fixed expiration or other termination clauses, which may require payment of a fee. Since some of these loan commitments are expected to expire without being drawn upon, total commitments do not necessarily represent future cash requirements. The reserve for off-balance sheet exposures is determined using the CECL reserve factor in the related funded loan segment, adjusted for an average historical funding rate. The allowance for credit losses for off-balance sheet credit exposures is recorded in other liabilities on the consolidated balance sheets and the corresponding provision is included in other non-interest expense.

The table below summarizes the allowance for credit losses for off-balance sheet credit exposures (in thousands):

	Three Months Ended March 31, 2021
Balance at beginning of period	$	808
Impact of CECL adoption	737
Balance at January 1, 2021	1,545
Provision for credit losses	157
Balance at end of period	$	1,702

The following tables set forth activity in our allowance for credit losses on loans, by loan type, as of and for the three months ended March 31, 2021, and March 31, 2020 (in thousands):

	Three Months Ended March 31, 2021
	Real Estate
	Commercial (1)		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCD)		PCD		Total
Beginning balance	$	33,005	$	207	$	1,214	$	260	$	1,842	$	198	$	36,726	$	881	$	37,607
Impact of CECL adoption	(1,949)		5,233		(921)		419		947		(188)		3,541		6,812		10,353
Balance at January 1, 2021	31,056		5,440		293		679		2,789		10		40,267		7,693		47,960
Charge-offs	(21)		—		—		—		—		—		(21)		(2,411)		(2,432)
Recoveries	19		1		—		—		21		2		43		—		43
Provisions (credit)	(2,172)		(269)		(24)		(36)		130		(3)		(2,374)		—		(2,374)
Ending balance	$	28,882	$	5,172	$	269	$	643	$	2,940	$	9	$	37,915	$	5,282	$	43,197

(1) Commercial includes commercial real estate loans collateralized by owner-occupied, non-owner occupied, and multifamily properties.

	Three Months Ended March 31, 2020
	Real Estate
	Commercial		One-to-Four Family		Construction and Land		Multifamily		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCI)		PCI		Total
Allowance for loan losses:
Beginning balance	$	4,891	$	180	$	536	$	20,203	$	317	$	1,640	$	151	$	27,918	$	789	$	28,707
Charge-offs	(433)		—		—		—		—		(37)		—		(470)		—		(470)
Recoveries	375		1		—		—		1		2		1		380		—		380
Provisions (credit)	611		131		135		6,686		256		430		(66)		8,183		—		8,183
Ending balance	$	5,444	$	312	$	671	$	26,889	$	574	$	2,035	$	86	$	36,011	$	789	$	36,800

The following tables detail the amount of loans receivable held-for-investment, net of deferred loan fees and costs, that are evaluated, individually and collectively, for impairment, and the related portion of the allowance for loan losses that is allocated to each loan portfolio segment, at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
	Real Estate
	Commercial (1)		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCD)		PCD		Total
Allowance for credit losses on loans:
Ending balance: individually evaluated for impairment	$	69	$	4	$	—	$	2	$	2	$	—	$	77	$	—	$	77
Ending balance: collectively evaluated for impairment	28,813		5,168		269		641		2,938		9		37,838		5,282		43,120
Loans, net:
Ending balance	3,305,522		202,948		77,206		93,118		234,518		1,658		3,914,970		18,045		3,933,015
Ending balance: individually evaluated for impairment	9,839		1,634		1,150		45		16		—		12,684		—		12,684
Ending balance: collectively evaluated for impairment	3,295,683		201,314		76,056		93,073		66,628		1,658		3,734,412		18,045		3,752,457
PPP loans not evaluated for impairment (2)	—		—		—		—		167,874		—		167,874		—		167,874

	December 31, 2020
	Real Estate
	Commercial		One-to-Four Family		Construction and Land		Multifamily		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCI)		PCI		Total
Allowance for credit losses on loans:
Ending balance: individually evaluated for impairment	$	66	$	—	$	—	$	—	$	3	$	4	$	—	$	73	$	—	$	73
Ending balance: collectively evaluated for impairment	5,944		207		1,214		26,995		257		1,838		198		36,653		881		37,534
Loans, net:
Ending balance	717,566		212,222		74,351		2,512,934		93,137		191,481		3,029		3,804,720		18,518		3,823,238
Ending balance: individually evaluated for impairment	10,650		1,903		—		626		47		16		—		13,242		—		13,242
Ending balance: collectively evaluated for impairment	706,916		210,319		74,351		2,512,308		93,090		64,930		3,029		3,664,943		18,518		3,683,461
PPP loans not evaluated for impairment (2)	—		—		—		—		—		126,535		—		126,535		—		126,535

(1) Commercial includes commercial real estate loans collateralized by owner-occupied, non-owner occupied, and multifamily properties.

(2) PPP loans are guaranteed by the SBA and therefore excluded from the allowance for loan losses.

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Deposits

3 Months Ended

Mar. 31, 2021

Deposits [Abstract]

Deposits

Deposits

Deposit account balances are summarized as follows (in thousands):

	March 31, 2021		December 31, 2020
Non-interest-bearing checking	$	771,432	$	695,831
NOW and interest-bearing checking	918,367		905,208
Savings and money market	1,815,727		1,953,885
Certificates of deposit	630,190		521,627
Total deposits	$	4,135,716	$	4,076,551

Interest expense on deposit accounts is summarized for the periods indicated (in thousands):

	Three Months Ended March 31,
	2021		2020
NOW and interest-bearing checking, savings, and money market	$	932	$	4,073
Certificates of deposit	938		5,206
Total interest expense on deposit accounts	$	1,870	$	9,279

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Equity Incentive Plans

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Equity Incentive Plans

Equity Incentive Plans

The following table is a summary of the Company’s stock options outstanding as of March 31, 2021, and changes therein during the three months then ended.

	Number of Stock Options	Weighted Average Grant Date Fair Value		Weighted Average Exercise Price		Weighted Average Contractual Life (years)
Outstanding - December 31, 2020	2,214,193	$	4.01	$	13.94	3.96
Forfeited	(41,090)	3.96		13.62		—
Exercised	(54,990)	4.06		14.69		—
Outstanding - March 31, 2021	2,118,113	4.01		13.92		3.71
Exercisable - March 31, 2021	2,101,034	4.00		13.91		3.70

 Expected future stock option expense related to the non-vested options outstanding as of March 31, 2021, is $25,000 over a weighted average period of 0.6 years.

On January 29, 2021, the Company granted to directors and employees, under the 2019 EIP, 147,315 restricted stock units with a total grant-date fair value of $1.8 million. Of these grants, 32,769 vest one year from the date of grant and 114,546 vest in equal installments over a five-year period beginning one year from the date of grant. The Company also issued 29,615 performance-based restricted stock units to its executive officers with a total grant date fair value of $366,041. Vesting of the performance-based restricted stock units will be based on achievement of certain levels of Core Return on Average Assets and will cliff-vest after a three-year measurement period ended January 29, 2024, based on the Company's performance relative to a peer group as determined by the Compensation Committee of the Board. At the end of the performance period, the number of actual shares to be awarded may vary between 0% and 225% of target amounts.

The following is a summary of the status of the Company’s restricted stock awards as of March 31, 2021, and changes therein during the three months then ended.

	Number of Shares Awarded	Weighted Average Grant Date Fair Value
Non-vested at December 31, 2020	104,010	$	15.91
Granted	176,930	12.59
Vested	(38,470)	15.81
Forfeited	(4,022)	15.81
Non-vested at March 31, 2021	238,448	13.46

Expected future stock award expense related to the non-vested restricted share awards as of March 31, 2021, is $2.6 million over a weighted average period of 3.3 years.

During the three months ended March 31, 2021, and March 31, 2020, the Company recorded $243,000 and $448,000, respectively, of stock-based compensation related to the above plans.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The following tables present the assets reported on the consolidated balance sheets at their estimated fair value as of March 31, 2021, and December 31, 2020, by level within the fair value hierarchy as required by the Fair Value Measurements and Disclosures Topic of the FASB ASC. Financial assets and liabilities are classified in their entirety based on the level of input that is significant to the fair value measurement. The fair value hierarchy is as follows:

•Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

•Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (for example, interest rates, volatilities, prepayment speeds, loss severities, credit risks and default rates) or inputs that are derived principally from or corroborated by observable market data by correlations or other means.

•Level 3 Inputs – Significant unobservable inputs that reflect the Company’s own assumptions that market participants would use in pricing the assets or liabilities.

The methods of determining the fair value of assets and liabilities presented in this note are consistent with our methodologies disclosed in Note 15 to the Consolidated Financial Statements of the Company’s 2020 Annual Report on Form 10-K.

	Fair Value Measurements at March 31, 2021 Using:
	Carrying Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in thousands)
Measured on a recurring basis:
Assets:
Investment securities:
Debt securities available-for-sale:
U.S. Government agency	$	2,690	$	—	$	2,690	$	—
Mortgage-backed securities:
Pass-through certificates:
GSE	253,563		—		253,563		—
REMICs:
GSE	825,693		—		825,693		—
	1,079,256		—		1,079,256		—
Other debt securities:
Municipal bonds	103		—		103		—
Corporate bonds	124,442		—		124,442		—
Asset-backed securities	747		—		747		—
	125,292		—		125,292		—
Total debt securities available-for-sale	1,207,238		—		1,207,238		—
Trading securities	12,142		12,142		—		—
Equity securities	473		473		—		—
Total	$	1,219,853	$	12,615	$	1,207,238	$	—
Measured on a non-recurring basis:
Assets:
Loans individually evaluated for impairment:
Real estate loans:
Commercial real estate	$	3,871	$	—	$	—	$	3,871
One-to-four family residential mortgage	540		—		—		540
Multifamily	12		—		—		12
Home equity and lines of credit	29		—		—		29
Total individually evaluated real estate loans	4,452		—		—		4,452
Commercial and industrial loans	14		—		—		14
Other real estate owned	100		—		—		100
Total	$	4,566	$	—	$	—	$	4,566

	Fair Value Measurements at December 31, 2020 Using:
	Carrying Value		Quoted Prices in Active Markets for Identical Assets  (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs  (Level 3)
	(in thousands)
Measured on a recurring basis:
Assets:
Investment securities:
Debt securities available-for-sale:
U.S. Government agency securities	$	3,158	$	—	$	3,158	$	—
Mortgage-backed securities:
Pass-through certificates:
GSE	281,343		—		281,343		—
REMICs:
GSE	890,965		—		890,965		—
Non-GSE	4		—		4		—
	1,172,312		—		1,172,312		—
Other debt securities:
Municipal bonds	123		—		123		—
Corporate bonds	88,418		—		88,418		—
Asset-backed securities	794		—		794		—
	89,335		—		89,335		—
Total debt securities available-for-sale	1,264,805		—		1,264,805		—
Trading securities	12,291		12,291		—		—
Equity securities	253		253		—		—
Total	$	1,277,349	$	12,544	$	1,264,805	$	—
Measured on a non-recurring basis:
Assets:
Impaired loans:
Real estate loans:
Commercial real estate	$	5,268	$	—	$	—	$	5,268
Multifamily	16		—		—		16
Home equity and lines of credit	28		—		—		28
Total impaired real estate loans	5,312		—		—		5,312
Commercial and industrial loans	13		—		—		13
Total	$	5,325	$	—	$	—	$	5,325

The following table presents qualitative information for Level 3 assets measured at fair value on a non-recurring basis at March 31, 2021, and December 31, 2020 (dollars in thousands):

	Fair Value				Valuation Methodology	Unobservable Inputs	Range of Inputs
	March 31, 2021		December 31, 2020				March 31, 2021	December 31, 2020
Individually evaluated loans	$	4,466	$	5,325	Appraisals	Discount for costs to sell	7.0%	7.0%
						Discount for quick sale	10.0%	10.0%
					Discounted cash flows	Interest rates	4.88% to 6.25%	4.88% to 6.25%
Other real estate owned	100		—		Appraisals	Discount for costs to sell	7.0%	N/A

The valuation techniques described below were used to measure fair value of financial instruments in the tables below on a recurring basis and a non-recurring basis as of March 31, 2021, and December 31, 2020.

Debt Securities Available for Sale: The estimated fair values for mortgage-backed securities, corporate, and other debt securities are obtained from an independent nationally recognized third-party pricing service. The estimated fair values are derived primarily from cash flow models, which include assumptions for interest rates, credit losses, and prepayment speeds. Broker/dealer quotes are utilized as well, when such quotes are available and deemed representative of the market. The significant inputs utilized in the cash flow models are based on market data obtained from sources independent of the Company (Observable Inputs), and are therefore classified as Level 2 within the fair value hierarchy. There were no transfers of securities between Level 1 and Level 2 during the three months ended March 31, 2021 or March 31, 2020.     

Trading Securities: Fair values are derived from quoted market prices in active markets. The assets consist of publicly traded mutual funds.

Equity Securities: Fair values of equity securities consisting of publicly traded mutual funds are derived from quoted market prices in active markets.

Loans individually evaluated for impairment: At March 31, 2021, and December 31, 2020, the Company had loans individually evaluated for impairment (excluding PCD/PCI loans) with outstanding principal balances of $6.5 million and $7.4 million, respectively, which were recorded at their estimated fair value of $4.5 million and $5.3 million, respectively. The Company recorded a net increase in the specific reserve for impaired loans of $3,000 for the three months ended March 31, 2021 and a net decrease in the specific reserve for impaired loans of $79,000 for the three months ended March 31, 2020. Net charge-offs of $2.4 million and $90,000 were recorded for the three months ended March 31, 2021 and March 31, 2020, respectively, utilizing Level 3 inputs. For purposes of estimating the fair value of impaired loans, management utilizes independent appraisals, if the loan is collateral-dependent, adjusted downward by management, as necessary, for changes in relevant valuation factors subsequent to the appraisal date, or the present value of expected future cash flows for non-collateral dependent loans and TDRs.

Other Real Estate Owned: At March 31, 2021, the Company had assets acquired through foreclosure

of $100,000, recorded at estimated fair value, less estimated selling costs when acquired, thus establishing a new cost basis. Estimated fair value is generally based on independent appraisals. These appraisals include adjustments to comparable assets based on the appraisers’ market knowledge and experience, and are considered Level 3 inputs. When an asset is acquired, the excess of the loan balance over fair value, less estimated selling costs, is charged to the allowance for loan losses. If the estimated fair value of the asset declines, a write-down is recorded through non-interest expense. The valuation of foreclosed assets is subjective in nature and may be adjusted in the future because of changes in the economic conditions.

In addition, the Company may be required, from time to time, to measure the fair value of certain other financial assets on a nonrecurring basis in accordance with U.S. GAAP. The adjustments to fair value usually result from the application of lower-of-cost-or-market accounting or write downs of individual assets.

Fair Value of Financial Instruments:

The FASB ASC Topic for Financial Instruments requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring or non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. The following methods and assumptions were used to estimate the fair value of other financial assets and financial liabilities not already discussed above:

(a)     Cash and Cash Equivalents

Cash and cash equivalents are short-term in nature with original maturities of three months or less; the carrying amount approximates fair value. Certificates of deposit having original terms of six-months or less; the carrying value generally approximates fair value. Certificates of deposit with an original maturity of six months or greater; the fair value is derived from discounted cash flows.

(b)    Debt Securities (Held-to-Maturity)

The estimated fair values for substantially all of our securities are obtained from an independent nationally recognized pricing service. The independent pricing service utilizes market prices of same or similar securities whenever such prices are available. Prices involving distressed sellers are not utilized in determining fair value. Where necessary, the independent third-party pricing service estimates fair value using models employing techniques such as discounted cash flow analysis. The assumptions used in these models typically include assumptions for interest rates, credit losses, and prepayments, utilizing market observable data where available.

(c)    Investments in Equity Securities at Net Asset Value Per Share

The Company uses net asset value as a practical expedient to record its investment in a private SBA Loan Fund since the shares in the fund are not publicly traded, do not have a readily determinable fair value and the net asset value per share is calculated in a manner consistent with the measurement principles of an investment company.

(d)    Federal Home Loan Bank of New York Stock

The fair value for Federal Home Loan Bank of New York ("FHLBNY") stock is its carrying value, since this is the amount for which it could be redeemed and there is no active market for this stock.

(e)    Loans (Held-for-Investment)

Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as originated and purchased, and further segregated by residential mortgage, construction, land, multifamily, commercial and consumer. Each loan category is further segmented into amortizing and non-amortizing and fixed and adjustable rate interest terms and by performing and nonperforming categories. The fair value of loans is estimated using a discounted cash flow analysis. The discount rates used to determine fair value use interest rate spreads that reflect factors such as liquidity, credit, and nonperformance risk of the loans.

(f)    Loans (Held-for-Sale)

Held-for-sale loans are carried at the lower of aggregate cost or estimated fair value, less costs to sell, and therefore fair value is equal to carrying value.

(g)    Deposits

The fair value of deposits with no stated maturity, such as non-interest bearing demand deposits, savings, NOW and money market accounts, is equal to the amount payable on demand. The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities.

(h)    Commitments to Extend Credit and Standby Letters of Credit

The fair value of commitments to extend credit and standby letters of credit is estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value of off-balance sheet commitments is insignificant and therefore not included in the following table.

 (i)    Borrowings

The fair value of borrowed funds is estimated by discounting future cash flows based on rates currently available for debt with similar terms and remaining maturity.

(j)    Advance Payments by Borrowers for Taxes and Insurance

Advance payments by borrowers for taxes and insurance have no stated maturity; the fair value is equal to the amount currently payable.

(k)    Derivatives

The fair value of the Company's derivatives is determined using discounted cash flow analysis using observable market-based inputs, which are considered Level 2 inputs.

The estimated fair value of the Company’s financial instruments at March 31, 2021, and December 31, 2020, is presented in the following tables (in thousands):

	March 31, 2021
			Estimated Fair Value
	Carrying Value		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	127,570	$	127,570	$	—	$	—	$	127,570
Trading securities	12,142		12,142		—		—		12,142
Debt securities available-for-sale	1,207,238		—		1,207,238		—		1,207,238
Debt securities held-to-maturity	6,913		—		7,241		—		7,241
Equity securities	473		473		—		—		473
FHLBNY stock, at cost	28,641		—		28,641		—		28,641
Net loans held-for-investment	3,889,818		—		—		3,959,088		3,959,088
Derivative assets	1,219		—		1,219		—		1,219
Financial liabilities:
Deposits	$	4,135,716	$	—	$	4,140,621	$	—	$	4,140,621
Borrowed funds	592,170		—		604,460		—		604,460
Advance payments by borrowers for taxes and insurance	24,027		—		24,027		—		24,027
Derivative liabilities	1,220		—		1,220		—		1,220

	December 31, 2020
			Estimated Fair Value
	Carrying Value		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	87,544	$	87,544	$	—	$	—	$	87,544
Trading securities	12,291		12,291		—		—		12,291
Debt securities available-for-sale	1,264,805		—		1,264,805		—		1,264,805
Debt securities held-to-maturity	7,234		—		7,574		—		7,574
Equity securities	253		253		—		—		253
FHLBNY stock, at cost	28,641		—		28,641		—		28,641
Loans held-for-sale	19,895		—		—		19,895		19,895
Net loans held-for-investment	3,785,631		—		—		3,842,054		3,842,054
Derivative assets	1,498		—		1,498		—		1,498
Financial liabilities:
Deposits	$	4,076,551	$	—	$	4,082,538	$	—	$	4,082,538
Borrowed funds	591,789		—		609,900		—		609,900
Advance payments by borrowers for taxes and insurance	19,677		—		19,677		—		19,677
Derivative liabilities	1,502		—		1,502		—		1,502

Limitations

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected losses, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on-and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in the estimates.

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Earnings Per Share

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Basic earnings per share is computed by dividing net income available to common stockholders by the weighted average number of shares outstanding during the period. For purposes of calculating basic earnings per share, weighted average common shares outstanding excludes unallocated employee stock ownership plan (“ESOP”) shares that have not been committed for release and unvested restricted stock.

Diluted earnings per share is computed using the same method as basic earnings per share, but reflects the potential dilution that could occur if stock options and unvested shares of restricted stock were exercised and converted into common stock. These potentially dilutive shares would then be included in the weighted average number of shares outstanding for the period using the treasury stock method. When applying the treasury stock method we added the assumed proceeds from option exercises and the average unamortized compensation costs related to unvested shares of restricted stock and stock options. We then divided this sum by our average stock price for the period to calculate assumed shares repurchased. The excess of the number of shares issuable over the number of shares assumed to be repurchased is added to basic weighted average common shares to calculate diluted earnings per share.

The following is a summary of the Company’s earnings per share calculations and reconciliation of basic to diluted earnings per share for the periods indicated (in thousands, except per share data):

	Three Months Ended March 31,
	2021		2020
Net income available to common stockholders	$	18,677	$	4,551
Weighted average shares outstanding-basic	49,528,419		46,791,768
Effect of non-vested restricted stock and stock options outstanding	105,225		191,698
Weighted average shares outstanding-diluted	49,633,644		46,983,466
Earnings per share-basic	$	0.38	$	0.10
Earnings per share-diluted	$	0.38	$	0.10
Anti-dilutive shares	1,002,377		1,001,828

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Leases

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Leases

Leases

The Company’s leases primarily relate to real estate property for branches and office space with terms extending from three months up to 34.3 years. At March 31, 2021, all of the Company's leases are classified as operating leases, which are required to be recognized on the consolidated statements of financial condition as a right-of-use asset and a corresponding lease liability.

The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use assets and operating lease liabilities on the consolidated balance sheets. Right-of-use assets represent the right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recorded at the present value of lease payments over the lease term. As the Company's leases do not provide an implicit rate, the Company uses its incremental borrowing rate, at lease inception, over a similar term in determining the present value of lease payments. Certain leases include options to renew, with one or more renewal terms ranging from five to ten years. If the exercise of a renewal option is considered to be reasonably certain, the Company includes the extended term in the calculation of the right-of-use asset and lease liability.

At March 31, 2021, the Company’s operating lease right-of-use assets and operating lease liabilities included on the consolidated balance sheet were $35.7 million and $42.1 million, respectively. At December 31, 2020, the Company’s operating lease right-of-use assets and operating lease liabilities included on the consolidated balance sheet were $36.7 million and $42.7 million, respectively. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are recognized as incurred. Variable lease payments include common area maintenance charges, real estate taxes, repairs and maintenance costs and utilities. Operating and variable lease expenses are recorded in occupancy expense on the consolidated statements of comprehensive income.

Supplemental lease information at or for the three months ended March 31, 2021, and March 31, 2020 is as follows (dollars in thousands):

	Three Months Ended March 31,
	2021			2020
Operating lease cost	$	1,455		$	1,439
Variable lease cost	1,235			544
Net lease cost	$	2,690		$	1,983
Cash paid for amounts included in measurement of operating lease liabilities	$	1,708		$	1,545
Right-of-use assets obtained in exchange for new operating lease liabilities	$	—		$	3,028
Weighted average remaining lease term	12.26 years			12.71 years
Weighted average discount rate	3.60		%	3.59		%

The following table summarizes lease payment obligations for each of the next five years and thereafter in addition to a reconcilement to the Company's current lease liability (in thousands):

Year	Amount
2021	$	4,669
2022	5,550
2023	5,504
2024	5,067
2025	4,710
Thereafter	28,196
Total lease payments	53,696
Less: imputed interest	11,629
Present value of lease liabilities	$	42,067

As of March 31, 2021, the Company had not entered into any leases that have not yet commenced.

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Revenue Recognition

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

The Company records revenue from contracts with customers in accordance with ASU 2014-09, Revenue from Contracts with Customers (“Topic 606”). The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities, which comprise the majority of the Company’s revenue.

The Company’s revenue streams that are within the scope of Topic 606 include service charges on deposit accounts, ATM and card interchange fees, investment services fees, and other miscellaneous income. Fees and service charges for customer services include: (i) service charges on deposit accounts, including account maintenance fees, overdraft fees, insufficient funds fees, wire fees, and other deposit related fees; (ii) ATM and card interchange fees, which include fees generated when a Bank cardholder uses a non-Bank ATM or a non-Bank cardholder uses a Bank ATM, and fees earned whenever the Bank's debit cards are processed through card payment networks such as Visa; and (iii) investment services fees earned through partnering with a third party investment and brokerage service firm to provide insurance and investment products to customers. The Company's performance obligation for fees and service charges is satisfied and related revenue recognized immediately or in the month of performance of services. For the three months ended March 31, 2021, other income primarily includes rental income from subleasing one of the Company's branches to a third party and gains on the sale or payoff of loans. For the three months ended March 31, 2020, other income primarily includes rental income from subleasing one of the Company's branches to a third party. Other income is recognized at the time the transaction occurs.

The following table summarizes non-interest income for the periods indicated (in thousands):

	Three Months Ended March 31,
	2021		2020
Fees and service charges for customer services:
Service charges	$	720	$	753
ATM and card interchange fees	399		304
Investment fees	78		63
Total fees and service charges for customer services	1,197		1,120
Income on bank-owned life insurance (1)	848		876
Gains (losses) on available-for-sale debt securities, net (1)	97		(13)
Gains (losses) on trading securities, net (1)	364		(1,992)
Swap income (1)	—		76
Other	130		41
Total non-interest income	$	2,636	$	108

(1) Not in scope of Topic 606

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Derivatives

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

Derivatives

The Company has interest rate derivatives resulting from a service provided to certain qualified borrowers in a loan-related transaction and, therefore, are not used to manage interest rate risk in the Company’s assets or liabilities. The interest rate swap agreement which the Company executes with the commercial borrower is collateralized by the borrower’s commercial real estate financed by the Company. The collateral exceeds the maximum potential amount of future payments under the credit derivative. As these interest rate swaps do not meet the hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings.

At March 31, 2021, the Company had seven interest rate swaps with a notional amount of $38.9 million. At December 31, 2020, the Company had seven interest rate swaps with a notional amount of $39.2 million. For the three months ended March 31, 2021 and March 31, 2020, the Company recorded net fee income of $0 and $76,000, respectively.

The table below presents the fair value of the derivatives as well as their location on the consolidated balance sheets (in thousands):

	Fair Value
Balance Sheet Location	March 31, 2021		December 31, 2020
Other assets	$	1,219	$	1,498
Other liabilities	1,220		1,502

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Recent Accounting Pronouncements Adopted

3 Months Ended

Mar. 31, 2021

Accounting Standards Update and Change in Accounting Principle [Abstract]

Recent Accounting Pronouncements Adopted

Recent Accounting Pronouncements Adopted

In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): “Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). This guidance was subsequently amended by ASU No. 2019-04, “Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments”; ASU No. 2019-05, “Financial Instruments-Credit Losses (Topic 326): Targeted Transition Relief”; and ASU No. 2019-11, “Codification Improvements to Topic 326, Financial Instruments-Credit Losses”. ASU No. 2016-13 and its subsequent updates are collectively known as “CECL”. CECL replaces the current incurred loss impairment model that recognizes losses when a probable threshold is met with a requirement to recognize lifetime expected credit losses immediately when a financial asset is originated or purchased. For available-for-sale debt securities where fair value is less than cost, credit-related impairment would be recognized in an allowance for credit losses and adjusted in each subsequent period for changes in credit risk. CECL also expands the disclosure requirements regarding an entity’s assumptions, models, and methods for estimating the allowance for credit losses.

ASU 2016-13 and its related amendments were initially effective for financial statements for fiscal years and interim periods beginning after December 15, 2019. The Company elected to defer the adoption of the CECL methodology permitted by the CARES Act, signed into law on March 27, 2020, which provided financial institutions with the option to defer adoption of ASU 2016-13 until the earlier of the end of the pandemic or December 31, 2020. This relief was further extended by the Consolidations Appropriations Act enacted on December 27, 2020, to the earlier of the first day of an entity's fiscal year after the date the national emergency terminates or January 1, 2022. The Company adopted ASU 2016-13 and its related amendments on January 1, 2021, using a modified retrospective approach. Our implementation process included: assessment and documentation of governance and reporting processes and related internal controls; model development, documentation and validation; and the incorporation of qualitative adjustments for model limitations, among other things. ASU 2016-13 lists several credit loss methods that are acceptable such as a discounted cash flow method, loss-rate method and probability of default/loss given default (“PD/LGD”) method. The Company utilizes the PD/LGD methodology to estimate its allowance for loan losses.

At adoption, the Company recorded an $11.1 million increase to its allowance for credit losses, including reserves of $10.4 million related to loans and $737,000 related to unfunded credit commitments. Of the $10.4 million increase in loan reserves, $6.8 million represents PCD loan-related reserves which were recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity. The non-PCD loan related increase to the allowance for credit losses of $4.3 million, including the reserves for unfunded loan commitments, was offset in shareholders' equity and deferred tax assets. For further details on the adoption of CECL see Note 6 - Loans and Note 7 - Allowance for Credit Losses on Loans.

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Consolidated Financial Statements (Policies)

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

The consolidated financial statements are comprised of the accounts of Northfield Bancorp, Inc. (and its wholly owned subsidiaries, Northfield Investments, Inc. and Northfield Bank (the “Bank”), and the Bank’s wholly-owned subsidiaries, NSB Services Corp. and NSB Realty Trust, collectively the “Company”). All significant intercompany accounts and transactions have been eliminated in consolidation.

In the opinion of management, all adjustments (consisting solely of normal and recurring adjustments) necessary for the fair presentation of the consolidated balance sheets and the consolidated statements of comprehensive income for the unaudited periods presented have been included. The results of operations and other data presented for the three months ended March 31, 2021 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2021 or for any other period. Whenever necessary, certain prior year amounts are reclassified to conform to the current year presentation.

In preparing the unaudited consolidated financial statements in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”), management has made estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheets and the consolidated statements of comprehensive income for the periods indicated. Material estimates that are particularly susceptible to change are: the allowance for loan losses, estimated cash flows of our purchased credit-deteriorated (“PCD”, or, previously, purchased credit-impaired “PCI” ) loans and the valuation allowance against deferred tax assets. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the consolidated financial statements in the period they are deemed necessary. While management uses its best judgment, actual amounts or results could differ significantly from those estimates.

Certain information and note disclosures usually included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for the preparation of interim financial statements. The consolidated financial statements presented should be read in conjunction with the audited consolidated financial statements and notes to consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020, as filed with the SEC.

Loans and Allowance for Credit Losses

On January 1, 2021, the Company adopted ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): “Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (“CECL”) methodology. The Company used the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. The adoption of the new standard resulted in the Company recording an increase in the allowance for credit losses of $11.1 million, comprised of $10.4 million and $737,000, respectively, for loans and unfunded commitments, including $6.8 million related to PCD loans. For PCD loans, the allowance for credit losses recorded is recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity. The remaining increase to the allowance for credit losses of $4.3 million was offset in stockholders' equity and deferred taxes. As a result of adopting CECL, the Company's prior distinction between the originated loan portfolio and the non-PCD acquired loan portfolio is no longer necessary. Results for reporting periods beginning after January 1, 2021 are presented under CECL, while prior period amounts continue to be recorded with previously applicable U.S. GAAP. Further information regarding the impact of CECL can be found in Note 6 - Loans, Note 7 - Allowance for Loan Losses and Note 15 - Recent Accounting Pronouncements Adopted.

Fair Value Measurements

The following tables present the assets reported on the consolidated balance sheets at their estimated fair value as of March 31, 2021, and December 31, 2020, by level within the fair value hierarchy as required by the Fair Value Measurements and Disclosures Topic of the FASB ASC. Financial assets and liabilities are classified in their entirety based on the level of input that is significant to the fair value measurement. The fair value hierarchy is as follows:

•Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

•Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (for example, interest rates, volatilities, prepayment speeds, loss severities, credit risks and default rates) or inputs that are derived principally from or corroborated by observable market data by correlations or other means.

•Level 3 Inputs – Significant unobservable inputs that reflect the Company’s own assumptions that market participants would use in pricing the assets or liabilities.

Fair Value of Financial Instruments

The FASB ASC Topic for Financial Instruments requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring or non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. The following methods and assumptions were used to estimate the fair value of other financial assets and financial liabilities not already discussed above:

(a)     Cash and Cash Equivalents

Cash and cash equivalents are short-term in nature with original maturities of three months or less; the carrying amount approximates fair value. Certificates of deposit having original terms of six-months or less; the carrying value generally approximates fair value. Certificates of deposit with an original maturity of six months or greater; the fair value is derived from discounted cash flows.

(b)    Debt Securities (Held-to-Maturity)

The estimated fair values for substantially all of our securities are obtained from an independent nationally recognized pricing service. The independent pricing service utilizes market prices of same or similar securities whenever such prices are available. Prices involving distressed sellers are not utilized in determining fair value. Where necessary, the independent third-party pricing service estimates fair value using models employing techniques such as discounted cash flow analysis. The assumptions used in these models typically include assumptions for interest rates, credit losses, and prepayments, utilizing market observable data where available.

(c)    Investments in Equity Securities at Net Asset Value Per Share

The Company uses net asset value as a practical expedient to record its investment in a private SBA Loan Fund since the shares in the fund are not publicly traded, do not have a readily determinable fair value and the net asset value per share is calculated in a manner consistent with the measurement principles of an investment company.

(d)    Federal Home Loan Bank of New York Stock

The fair value for Federal Home Loan Bank of New York ("FHLBNY") stock is its carrying value, since this is the amount for which it could be redeemed and there is no active market for this stock.

(e)    Loans (Held-for-Investment)

Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as originated and purchased, and further segregated by residential mortgage, construction, land, multifamily, commercial and consumer. Each loan category is further segmented into amortizing and non-amortizing and fixed and adjustable rate interest terms and by performing and nonperforming categories. The fair value of loans is estimated using a discounted cash flow analysis. The discount rates used to determine fair value use interest rate spreads that reflect factors such as liquidity, credit, and nonperformance risk of the loans.

(f)    Loans (Held-for-Sale)

Held-for-sale loans are carried at the lower of aggregate cost or estimated fair value, less costs to sell, and therefore fair value is equal to carrying value.

(g)    Deposits

The fair value of deposits with no stated maturity, such as non-interest bearing demand deposits, savings, NOW and money market accounts, is equal to the amount payable on demand. The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities.

(h)    Commitments to Extend Credit and Standby Letters of Credit

The fair value of commitments to extend credit and standby letters of credit is estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value of off-balance sheet commitments is insignificant and therefore not included in the following table.

 (i)    Borrowings

The fair value of borrowed funds is estimated by discounting future cash flows based on rates currently available for debt with similar terms and remaining maturity.

(j)    Advance Payments by Borrowers for Taxes and Insurance

Advance payments by borrowers for taxes and insurance have no stated maturity; the fair value is equal to the amount currently payable.

(k)    Derivatives

The fair value of the Company's derivatives is determined using discounted cash flow analysis using observable market-based inputs, which are considered Level 2 inputs.

Earnings Per Share

Basic earnings per share is computed by dividing net income available to common stockholders by the weighted average number of shares outstanding during the period. For purposes of calculating basic earnings per share, weighted average common shares outstanding excludes unallocated employee stock ownership plan (“ESOP”) shares that have not been committed for release and unvested restricted stock.Diluted earnings per share is computed using the same method as basic earnings per share, but reflects the potential dilution that could occur if stock options and unvested shares of restricted stock were exercised and converted into common stock. These potentially dilutive shares would then be included in the weighted average number of shares outstanding for the period using the treasury stock method. When applying the treasury stock method we added the assumed proceeds from option exercises and the average unamortized compensation costs related to unvested shares of restricted stock and stock options. We then divided this sum by our average stock price for the period to calculate assumed shares repurchased. The excess of the number of shares issuable over the number of shares assumed to be repurchased is added to basic weighted average common shares to calculate diluted earnings per share.

Recently Issued and Adopted Accounting Pronouncements

In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): “Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). This guidance was subsequently amended by ASU No. 2019-04, “Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments”; ASU No. 2019-05, “Financial Instruments-Credit Losses (Topic 326): Targeted Transition Relief”; and ASU No. 2019-11, “Codification Improvements to Topic 326, Financial Instruments-Credit Losses”. ASU No. 2016-13 and its subsequent updates are collectively known as “CECL”. CECL replaces the current incurred loss impairment model that recognizes losses when a probable threshold is met with a requirement to recognize lifetime expected credit losses immediately when a financial asset is originated or purchased. For available-for-sale debt securities where fair value is less than cost, credit-related impairment would be recognized in an allowance for credit losses and adjusted in each subsequent period for changes in credit risk. CECL also expands the disclosure requirements regarding an entity’s assumptions, models, and methods for estimating the allowance for credit losses.

ASU 2016-13 and its related amendments were initially effective for financial statements for fiscal years and interim periods beginning after December 15, 2019. The Company elected to defer the adoption of the CECL methodology permitted by the CARES Act, signed into law on March 27, 2020, which provided financial institutions with the option to defer adoption of ASU 2016-13 until the earlier of the end of the pandemic or December 31, 2020. This relief was further extended by the Consolidations Appropriations Act enacted on December 27, 2020, to the earlier of the first day of an entity's fiscal year after the date the national emergency terminates or January 1, 2022. The Company adopted ASU 2016-13 and its related amendments on January 1, 2021, using a modified retrospective approach. Our implementation process included: assessment and documentation of governance and reporting processes and related internal controls; model development, documentation and validation; and the incorporation of qualitative adjustments for model limitations, among other things. ASU 2016-13 lists several credit loss methods that are acceptable such as a discounted cash flow method, loss-rate method and probability of default/loss given default (“PD/LGD”) method. The Company utilizes the PD/LGD methodology to estimate its allowance for loan losses.

At adoption, the Company recorded an $11.1 million increase to its allowance for credit losses, including reserves of $10.4 million related to loans and $737,000 related to unfunded credit commitments. Of the $10.4 million increase in loan reserves, $6.8 million represents PCD loan-related reserves which were recognized through a gross-up that increases the amortized cost basis of loans with a corresponding increase to the allowance for credit losses, and therefore results in no impact to shareholders' equity. The non-PCD loan related increase to the allowance for credit losses of $4.3 million, including the reserves for unfunded loan commitments, was offset in shareholders' equity and deferred tax assets. For further details on the adoption of CECL see Note 6 - Loans and Note 7 - Allowance for Credit Losses on Loans.

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Business Combinations (Tables)

3 Months Ended

Mar. 31, 2021

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition

The following table summarizes the estimated fair values of the assets acquired and the liabilities assumed at the date of acquisition for Victory (in thousands):

	At July 1, 2020
	Fair Value
Total Purchase Price	$	41,173
Assets acquired:
Cash and cash equivalents	$	72,875
Debt securities available for sale	126,931
Loans	180,431
Accrued interest receivable	1,415
Bank-owned life insurance	5,714
Premises and equipment	7,789
Other assets	4,702
Total assets acquired	399,857
Liabilities assumed:
Deposits	354,592
Other liabilities	7,001
Total liabilities assumed	361,593
Net assets acquired	$	38,264
Goodwill recorded in the merger	$	2,909

Schedule of Credit Impaired Loans Acquired in Acquisition

The following is a summary of the credit impaired loans acquired in the Victory acquisition as of the closing date (in thousands):

	July 1, 2020
Contractually required principal and interest	$	7,809
Contractual cash flows not expected to be collected (non-accretable discount)	3,315
Expected cash flows to be collected at acquisition	4,494
Interest component of expected cash flows (accretable yield)	(599)
Fair value of acquired loans	$	3,895

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Debt Securities Available-for-Sale (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Comparative Summary of Mortgage-Backed Securities and Other Securities Available-for-Sale

The following is a comparative summary of mortgage-backed and other debt securities available-for-sale at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair
	cost		gains		losses		value
U.S. Government agency securities	$	2,758	$	—	$	(68)	$	2,690
Mortgage-backed securities:
Pass-through certificates:
Government sponsored enterprises ("GSEs")	244,399		9,522		(358)		253,563
Real estate mortgage investment conduits ("REMICs"):
GSE	818,623		7,392		(322)		825,693
	1,063,022		16,914		(680)		1,079,256
Other debt securities:
Municipal bonds	102		1		—		103
Corporate bonds	123,732		891		(181)		124,442
Asset-backed securities	733		14		—		747
	124,567		906		(181)		125,292
Total debt securities available-for-sale	$	1,190,347	$	17,820	$	(929)	$	1,207,238

	December 31, 2020
			Gross		Gross		Estimated
	Amortized		unrealized		unrealized		fair
	cost		gains		losses		value
U.S. Government agency securities	$	3,168	$	—	$	(10)	$	3,158
Mortgage-backed securities:
Pass-through certificates:
GSE	270,867		10,720		(244)		281,343
REMICs:
GSE	884,414		7,027		(476)		890,965
Non-GSE	4		—		—		4
	1,155,285		17,747		(720)		1,172,312
Other debt securities:
Municipal bonds	122		1		—		123
Corporate bonds	87,319		1,099		—		88,418
Asset-backed securities	779		15		—		794
	88,220		1,115		—		89,335
Total debt securities available-for-sale	$	1,246,673	$	18,862	$	(730)	$	1,264,805

Summary of Expected Maturity Distribution of Debt Securities Available-for-Sale, Other Than Mortgage-Backed Securities

The following is a summary of the expected maturity distribution of debt securities available-for-sale, other than mortgage-backed securities, at March 31, 2021 (in thousands):

Available-for-sale	Amortized cost		Estimated fair value
Due in one year or less	$	25,288	$	25,872
Due after one year through five years	83,535		83,815
Due after five years through ten years	17,769		17,548
Due after ten years	733		747
	$	127,325	$	127,982

Gross Unrealized Losses on Mortgage-Backed Securities

Gross unrealized losses on mortgage-backed and other debt securities available-for-sale, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2021, and December 31, 2020, were as follows (in thousands):

	March 31, 2021
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
U.S. Government agency securities	$	(68)	$	2,690	$	—	$	—	$	(68)	$	2,690
Mortgage-backed securities:
Pass-through certificates:
GSE	(353)		33,531		(5)		254		(358)		33,785
REMICs:
GSE	(322)		57,352		—		—		(322)		57,352
Other debt securities:
Corporate bonds	(181)		35,274		—		—		(181)		35,274
Total	$	(924)	$	128,847	$	(5)	$	254	$	(929)	$	129,101

	December 31, 2020
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
U.S. Government agency securities	(10)		$	3,158	$	—	$	—	$	(10)	$	3,158
Mortgage-backed securities:
Pass-through certificates:
GSE	(233)		28,419		(11)		459		(244)		28,878
REMICs:
GSE	(476)		210,569		—		—		(476)		210,569
Total	$	(719)	$	242,146	$	(11)	$	459	$	(730)	$	242,605

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Debt Securities Held-to-Maturity (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Securities Held-to-Maturity

The following is a summary of mortgage-backed securities held-to-maturity at March 31, 2021, and December 31, 2020 (in thousands): 

	March 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	6,913	$	328	$	—	$	7,241
Total securities held-to-maturity	$	6,913	$	328	$	—	$	7,241

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	7,234	$	340	$	—	$	7,574
Total securities held-to-maturity	$	7,234	$	340	$	—	$	7,574

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Loans (Tables)

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Net Loans Held-for-Investment

The following table summarizes the Company’s loans held-for-investment (in thousands):

	March 31,		December 31,
	2021		2020
Real estate loans:
Multifamily	$	2,571,409	$	2,509,310
Commercial mortgage	734,113		716,973
One-to-four family residential mortgage	202,948		210,817
Home equity and lines of credit	93,118		91,126
Construction and land	77,206		74,318
Total real estate loans	3,678,794		3,602,544
Commercial and industrial loans (1)	234,518		194,352
Other loans	1,658		3,029
Total commercial and industrial and other loans	236,176		197,381
Deferred origination loan costs, net (1)	—		4,795
Loans held-for-investment, net (excluding PCD/PCI)	3,914,970		3,804,720
PCD/PCI loans	18,045		18,518
Total Loans held-for-investment, net	3,933,015		3,823,238
Allowance for loan losses	(43,197)		(37,607)
Net loans held-for-investment	$	3,889,818	$	3,785,631

(1) Under CECL origination deferred fees, deferred fees on acquired loans, and purchase accounting adjustments in connection with loans acquired are included in loans by respective portfolio.

(2) Included in commercial and industrial loans at March 31, 2021 and December 31, 2020 are PPP loans totaling $167.9 million and $126.5 million, respectively.

Schedule of Loans Held-for-Investment, Excluding PCD Loans, Net of Deferred Fees and Costs

The following table presents the Company’s loans held-for-investment, excluding PCD loans, by loan class, credit risk ratings and year of origination, as of March 31, 2021 (in thousands):

	March 31, 2021
	2021		2020		2019		2018		2017		Prior		Revolving Loans		Total
Real Estate:
Multifamily
Pass	$	161,305	$	562,841	$	407,309	$	345,635	$	283,681	$	793,689	$	44	$	2,554,504
Special Mention	—		—		—		—		—		450		—		450
Substandard	—		—		4,691		3,361		—		8,403		—		16,455
Total multifamily	161,305		562,841		412,000		348,996		283,681		802,542		44		2,571,409
Commercial
Pass	33,829		72,556		100,207		92,969		66,730		312,858		3,583		682,732
Special Mention	—		—		1,297		9,046		—		9,506		500		20,349
Substandard	—		2,470		9,660		328		4,079		14,495		—		31,032
Total commercial	33,829		75,026		111,164		102,343		70,809		336,859		4,083		734,113
One-to-four family residential
Pass	966		9,689		14,189		15,717		13,097		141,652		1,613		196,923
Special Mention	—		—		467		—		—		2,428		—		2,895
Substandard	—		—		600		—		—		2,530		—		3,130
Total one-to-four family residential	966		9,689		15,256		15,717		13,097		146,610		1,613		202,948
Construction and land
Pass	6,654		14,328		5,760		36,750		7,515		3,641		1,018		75,666
Special Mention	—		—		—		—		—		—		—		—
Substandard	—		—		1,150		390		—		—		—		1,540
Total construction and land	6,654		14,328		6,910		37,140		7,515		3,641		1,018		77,206
Home equity and lines of credit
Pass	3,831		14,641		9,894		8,832		3,315		13,848		38,019		92,380
Special Mention	—		—		—		—		—		306		—		306
Substandard	—		—		99		88		—		245		—		432
Total home equity and lines of credit	3,831		14,641		9,993		8,920		3,315		14,399		38,019		93,118
Total Real Estate Loans	206,585		676,525		555,323		513,116		378,417		1,304,051		44,777		3,678,794
Commercial and industrial
Pass	67,372		113,363		6,407		3,462		1,356		12,961		26,406		231,327
Special Mention	—		81		210		42		147		324		—		804
Substandard	—		499		360		666		—		862		—		2,387
Total commercial and industrial	67,372		113,943		6,977		4,170		1,503		14,147		26,406		234,518
Other
Pass	1,257		191		32		51		—		51		73		1,655
Substandard	—		—		—		—		—		3		—		3
Total other	1,257		191		32		51		—		54		73		1,658
Total loans held-for-investment, net	$	275,214	$	790,659	$	562,332	$	517,337	$	379,920	$	1,318,252	$	71,256	$	3,914,970

The following table details the recorded investment of loans held-for-investment, excluding PCI loans, net of deferred fees and costs, by loan type and credit quality indicator at December 31, 2020 (in thousands):

	At December 31, 2020
	Real Estate
	Multifamily		Commercial		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total
Internal Risk Rating
Pass	$	2,497,556	$	667,568	$	207,633	$	74,351	$	92,385	$	189,372	$	3,026	$	3,731,891
Special Mention	458		20,422		2,456		—		311		498		—		24,145
Substandard	14,920		29,576		2,133		—		441		1,611		3		48,684
Total loans held-for-investment, net	$	2,512,934	$	717,566	$	212,222	$	74,351	$	93,137	$	191,481	$	3,029	$	3,804,720

Allowance For Loan Losses And Loans Receivable By Portfolio Segment Table

The following tables set forth activity in our allowance for credit losses on loans, by loan type, as of and for the three months ended March 31, 2021, and March 31, 2020 (in thousands):

	Three Months Ended March 31, 2021
	Real Estate
	Commercial (1)		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCD)		PCD		Total
Beginning balance	$	33,005	$	207	$	1,214	$	260	$	1,842	$	198	$	36,726	$	881	$	37,607
Impact of CECL adoption	(1,949)		5,233		(921)		419		947		(188)		3,541		6,812		10,353
Balance at January 1, 2021	31,056		5,440		293		679		2,789		10		40,267		7,693		47,960
Charge-offs	(21)		—		—		—		—		—		(21)		(2,411)		(2,432)
Recoveries	19		1		—		—		21		2		43		—		43
Provisions (credit)	(2,172)		(269)		(24)		(36)		130		(3)		(2,374)		—		(2,374)
Ending balance	$	28,882	$	5,172	$	269	$	643	$	2,940	$	9	$	37,915	$	5,282	$	43,197

(1) Commercial includes commercial real estate loans collateralized by owner-occupied, non-owner occupied, and multifamily properties.

	Three Months Ended March 31, 2020
	Real Estate
	Commercial		One-to-Four Family		Construction and Land		Multifamily		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCI)		PCI		Total
Allowance for loan losses:
Beginning balance	$	4,891	$	180	$	536	$	20,203	$	317	$	1,640	$	151	$	27,918	$	789	$	28,707
Charge-offs	(433)		—		—		—		—		(37)		—		(470)		—		(470)
Recoveries	375		1		—		—		1		2		1		380		—		380
Provisions (credit)	611		131		135		6,686		256		430		(66)		8,183		—		8,183
Ending balance	$	5,444	$	312	$	671	$	26,889	$	574	$	2,035	$	86	$	36,011	$	789	$	36,800

The following tables detail the amount of loans receivable held-for-investment, net of deferred loan fees and costs, that are evaluated, individually and collectively, for impairment, and the related portion of the allowance for loan losses that is allocated to each loan portfolio segment, at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
	Real Estate
	Commercial (1)		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCD)		PCD		Total
Allowance for credit losses on loans:
Ending balance: individually evaluated for impairment	$	69	$	4	$	—	$	2	$	2	$	—	$	77	$	—	$	77
Ending balance: collectively evaluated for impairment	28,813		5,168		269		641		2,938		9		37,838		5,282		43,120
Loans, net:
Ending balance	3,305,522		202,948		77,206		93,118		234,518		1,658		3,914,970		18,045		3,933,015
Ending balance: individually evaluated for impairment	9,839		1,634		1,150		45		16		—		12,684		—		12,684
Ending balance: collectively evaluated for impairment	3,295,683		201,314		76,056		93,073		66,628		1,658		3,734,412		18,045		3,752,457
PPP loans not evaluated for impairment (2)	—		—		—		—		167,874		—		167,874		—		167,874

	December 31, 2020
	Real Estate
	Commercial		One-to-Four Family		Construction and Land		Multifamily		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCI)		PCI		Total
Allowance for credit losses on loans:
Ending balance: individually evaluated for impairment	$	66	$	—	$	—	$	—	$	3	$	4	$	—	$	73	$	—	$	73
Ending balance: collectively evaluated for impairment	5,944		207		1,214		26,995		257		1,838		198		36,653		881		37,534
Loans, net:
Ending balance	717,566		212,222		74,351		2,512,934		93,137		191,481		3,029		3,804,720		18,518		3,823,238
Ending balance: individually evaluated for impairment	10,650		1,903		—		626		47		16		—		13,242		—		13,242
Ending balance: collectively evaluated for impairment	706,916		210,319		74,351		2,512,308		93,090		64,930		3,029		3,664,943		18,518		3,683,461
PPP loans not evaluated for impairment (2)	—		—		—		—		—		126,535		—		126,535		—		126,535

(1) Commercial includes commercial real estate loans collateralized by owner-occupied, non-owner occupied, and multifamily properties.

(2) PPP loans are guaranteed by the SBA and therefore excluded from the allowance for loan losses.

Estimated Expected Future Cash Flows of Each PCI Loan Pool

The following tables set forth the detail, and delinquency status, of non-performing loans (non-accrual loans and loans past due 90 days or more and still accruing), net of deferred fees and costs, at March 31, 2021, and December 31, 2020, excluding PCD/PCI loans (in thousands):

	March 31, 2021
	Total Non-Performing Loans
	Non-Accruing Loans
	Current		30-89 Days Past Due		90 Days or More Past Due		Total		90 Days or More Past Due and Accruing		Total Non-Performing Loans
Loans held-for-investment:
Real estate loans:
Commercial
Substandard	$	2,817	$	100	$	2,044	$	4,961	$	219	$	5,180
Total commercial	2,817		100		2,044		4,961		219		5,180
One-to-four family residential
Substandard	406		—		399		805		172		977
Total one-to-four family residential	406		—		399		805		172		977
Construction and land
Substandard	—		—		1,150		1,150		—		1,150
Total construction and land	—		—		1,150		1,150		—		1,150
Multifamily
Substandard	—		—		1,145		1,145		516		1,661
Total multifamily	—		—		1,145		1,145		516		1,661
Home equity and lines of credit
Substandard	58		—		129		187		—		187
Total home equity and lines of credit	58		—		129		187		—		187
Total real estate	3,281		100		4,867		8,248		907		9,155
Commercial and industrial loans
Pass	—		—		—		—		92		92
Special Mention	—		—		—		—		85		85
Substandard	1		36		161		198		561		759
Total commercial and industrial loans	1		36		161		198		738		936
Other loans
Pass	—		—		—		—		3		3
Total other	—		—		—		—		3		3
Total non-performing loans	$	3,282	$	136	$	5,028	$	8,446	$	1,648	$	10,094

	December 31, 2020
	Total Non-Performing Loans
	Non-Accruing Loans
	Current		30-89 Days Past Due		90 Days or More Past Due		Total		90 Days or More Past Due and Accruing		Total Non-Performing Loans
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	—	$	—	$	—	$	—	$	500	$	500
Substandard	2,829		537		2,863		6,229		—		$	6,229
Total commercial	2,829		537		2,863		6,229		500		6,729
One-to-four family residential
Substandard	413		—		493		906		174		1,080
Total one-to-four family residential	413		—		493		906		174		1,080
Multifamily
Substandard	—		—		1,153		1,153		—		1,153
Total multifamily	—		—		1,153		1,153		—		1,153
Home equity and lines of credit
Substandard	60		—		131		191		—		191
Total home equity and lines of credit	60		—		131		191		—		191
Total real estate	3,302		537		4,640		8,479		674		9,153
Commercial and industrial loans
Pass	—		—		—		—		101		101
Special Mention	—		—		—		—		85		85
Substandard	—		—		37		37		250		287
Total commercial and industrial loans	—		—		37		37		436		473
Other loans
Pass	—		—		—		—		3		3
Total other	—		—		—		—		3		3
Total non-performing loans	$	3,302	$	537	$	4,677	$	8,516	$	1,113	$	9,629

Detail and Delinquency Status of Originated Loans Held-for-Investment, Net of Deferred Fees and Costs, by Performing and Non-Performing Loans

The following tables set forth the detail and delinquency status of loans held-for-investment, excluding PCD/PCI loans, net of deferred fees and costs, at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
			Past Due Loans
	30-89 Days Past Due		90 Days or More Past Due		90 Days or More Past Due and Accruing		Total Past Due		Current		Total Loans Receivable, net
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	1,651	$	—	$	—	$	1,651	$	681,081	$	682,732
Special Mention	—		—		—		—		20,349		20,349
Substandard	2,906		2,044		219		5,169		25,863		31,032
Total commercial	4,557		2,044		219		6,820		727,293		734,113
One-to-four family residential
Pass	1,827		—		—		1,827		195,096		196,923
Special Mention	1,085		—		—		1,085		1,810		2,895
Substandard	1,111		399		172		1,682		1,448		3,130
Total one-to-four family residential	4,023		399		172		4,594		198,354		202,948
Construction and land
Pass	—		—		—		—		75,666		75,666
Substandard	390		1,150		—		1,540		—		1,540
Total construction and land	390		1,150		—		1,540		75,666		77,206
Multifamily
Pass	1,256		—		—		1,256		2,553,248		2,554,504
Special Mention	—		—		—		—		450		450
Substandard	1,163		1,145		516		2,824		13,631		16,455
Total multifamily	2,419		1,145		516		4,080		2,567,329		2,571,409
Home equity and lines of credit
Pass	229		—		—		229		92,151		92,380
Special Mention	44		—		—		44		262		306
Substandard	99		129		—		228		204		432
Total home equity and lines of credit	372		129		—		501		92,617		93,118
Total real estate	11,761		4,867		907		17,535		3,661,259		3,678,794
Commercial and industrial
Pass	1,471		—		92		1,563		229,764		231,327
Special Mention	259		—		85		344		460		804
Substandard	785		161		561		1,507		880		2,387
Total commercial and industrial	2,515		161		738		3,414		231,104		234,518
Other loans
Pass	7		—		—		7		1,648		1,655
Substandard	—		—		3		3		—		3
Total other loans	7		—		3		10		1,648		1,658
Total loans held-for-investment	$	14,283	$	5,028	$	1,648	$	20,959	$	3,894,011	$	3,914,970

	December 31, 2020
	Performing (Accruing) Loans
	0-29 Days Past Due		30-89 Days Past Due		Total		Non-Performing Loans		Total Loans Receivable, net
Loans held-for-investment:
Real estate loans:
Commercial
Pass	$	660,996	$	6,072	$	667,068	$	500	$	667,568
Special Mention	20,350		72		20,422		—		20,422
Substandard	20,699		2,648		23,347		6,229		29,576
Total commercial	702,045		8,792		710,837		6,729		717,566
One-to-four family residential
Pass	207,351		282		207,633		—		207,633
Special Mention	1,586		870		2,456		—		2,456
Substandard	1,053		—		1,053		1,080		2,133
Total one-to-four family residential	209,990		1,152		211,142		1,080		212,222
Construction and land
Pass	73,357		994		74,351		—		74,351
Total construction and land	73,357		994		74,351		—		74,351
Multifamily
Pass	2,496,273		1,283		2,497,556		—		2,497,556
Special Mention	458		—		458		—		458
Substandard	13,157		610		13,767		1,153		14,920
Total multifamily	2,509,888		1,893		2,511,781		1,153		2,512,934
Home equity and lines of credit
Pass	92,305		80		92,385		—		92,385
Special Mention	111		200		311		—		311
Substandard	150		100		250		191		441
Total home equity and lines of credit	92,566		380		92,946		191		93,137
Total real estate	3,587,846		13,211		3,601,057		9,153		3,610,210
Commercial and industrial
Pass	188,639		632		189,271		101		189,372
Special Mention	352		61		413		85		498
Substandard	1,257		67		1,324		287		1,611
Total commercial and industrial	190,248		760		191,008		473		191,481
Other loans
Pass	3,015		11		3,026		—		3,026
Substandard	—		—		—		3		3
Total other loans	3,015		11		3,026		3		3,029
Total loans held-for-investment, net	$	3,781,109	$	13,982	$	3,795,091	$	9,629	$	3,804,720

Schedule of Non-accrual Loans, Excluding PCD Loans

The following table summarizes information on non-accrual loans, excluding PCD loans, at March 31, 2021 (in thousands):

	At or for the Three Months Ended
	March 31, 2021
	Recorded Investment		Unpaid Principal Balance		With No Related Allowance		Interest Income
Real estate loans:
Commercial	$	4,961	$	5,471	$	3,275	$	25
One-to-four family residential	805		836		228		6
Construction and land	1,150		1,150		1,150		—
Multifamily	1,145		1,154		—		14
Home equity and lines of credit	187		436		—		2
Commercial and industrial	198		392		1		2
Total non-accrual loans	$	8,446	$	9,439	$	4,654	$	49

Summary of Impaired Loans

The following table summarizes impaired loans as of December 31, 2020 (in thousands):

	December 31, 2020
	Recorded Investment		Unpaid Principal Balance		Related Allowance
With No Allowance Recorded:
Real estate loans:
Commercial	$	8,838	$	10,076	$	—
One-to-four family residential	1,903		2,032		—
Multifamily	626		1,097		—
Home equity and lines of credit	15		15		—
Total Real Estate	11,382		13,220		—
With a Related Allowance Recorded:
Real estate loans:
Commercial	1,812		2,244		(66)
Home equity and lines of credit	32		32		(3)
Total Real Estate	1,844		2,276		(69)
Commercial and industrial loans	16		16		(4)
Total:
Real estate loans
Commercial	10,650		12,320		(66)
One-to-four family residential	1,903		2,032		—
Multifamily	626		1,097		—
Home equity and lines of credit	47		47		(3)
Commercial and industrial loans	16		16		(4)
	$	13,242	$	15,512	$	(73)

The following table summarizes the average recorded investment in impaired loans, excluding PCI loans, and interest income recognized as of, and for, the three months March 31, 2020 (in thousands):

	March 31, 2020
	Average Recorded Investment		Interest Income
With No Allowance Recorded:
Real estate loans:
Commercial	$	16,198	$	112
One-to-four family residential	2,464		33
Multifamily	1,036		13
Home equity and lines of credit	21		—
Commercial and industrial loans	38		—
With a Related Allowance Recorded:
Real estate loans:
Commercial	930		—
Home equity and lines of credit	33		1
Commercial and industrial loans	18		—
Total:
Real estate loans
Commercial	17,128		112
One-to-four family residential	2,464		33
Multifamily	1,036		13
Home equity and lines of credit	54		1
Commercial and industrial loans	56		—
	$	20,738	$	159

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Allowance for Credit Losses on Loans (“ACL”) (Tables)

3 Months Ended

Mar. 31, 2021

Credit Loss [Abstract]

Schedule of Allowance for Credit Losses for Off-Balance Sheet credit Exposures

The table below summarizes the allowance for credit losses for off-balance sheet credit exposures (in thousands):

	Three Months Ended March 31, 2021
Balance at beginning of period	$	808
Impact of CECL adoption	737
Balance at January 1, 2021	1,545
Provision for credit losses	157
Balance at end of period	$	1,702

Allowance For Loan Losses And Loans Receivable By Portfolio Segment Table

The following tables set forth activity in our allowance for credit losses on loans, by loan type, as of and for the three months ended March 31, 2021, and March 31, 2020 (in thousands):

	Three Months Ended March 31, 2021
	Real Estate
	Commercial (1)		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCD)		PCD		Total
Beginning balance	$	33,005	$	207	$	1,214	$	260	$	1,842	$	198	$	36,726	$	881	$	37,607
Impact of CECL adoption	(1,949)		5,233		(921)		419		947		(188)		3,541		6,812		10,353
Balance at January 1, 2021	31,056		5,440		293		679		2,789		10		40,267		7,693		47,960
Charge-offs	(21)		—		—		—		—		—		(21)		(2,411)		(2,432)
Recoveries	19		1		—		—		21		2		43		—		43
Provisions (credit)	(2,172)		(269)		(24)		(36)		130		(3)		(2,374)		—		(2,374)
Ending balance	$	28,882	$	5,172	$	269	$	643	$	2,940	$	9	$	37,915	$	5,282	$	43,197

(1) Commercial includes commercial real estate loans collateralized by owner-occupied, non-owner occupied, and multifamily properties.

	Three Months Ended March 31, 2020
	Real Estate
	Commercial		One-to-Four Family		Construction and Land		Multifamily		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCI)		PCI		Total
Allowance for loan losses:
Beginning balance	$	4,891	$	180	$	536	$	20,203	$	317	$	1,640	$	151	$	27,918	$	789	$	28,707
Charge-offs	(433)		—		—		—		—		(37)		—		(470)		—		(470)
Recoveries	375		1		—		—		1		2		1		380		—		380
Provisions (credit)	611		131		135		6,686		256		430		(66)		8,183		—		8,183
Ending balance	$	5,444	$	312	$	671	$	26,889	$	574	$	2,035	$	86	$	36,011	$	789	$	36,800

The following tables detail the amount of loans receivable held-for-investment, net of deferred loan fees and costs, that are evaluated, individually and collectively, for impairment, and the related portion of the allowance for loan losses that is allocated to each loan portfolio segment, at March 31, 2021, and December 31, 2020 (in thousands):

	March 31, 2021
	Real Estate
	Commercial (1)		One-to-Four Family		Construction and Land		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCD)		PCD		Total
Allowance for credit losses on loans:
Ending balance: individually evaluated for impairment	$	69	$	4	$	—	$	2	$	2	$	—	$	77	$	—	$	77
Ending balance: collectively evaluated for impairment	28,813		5,168		269		641		2,938		9		37,838		5,282		43,120
Loans, net:
Ending balance	3,305,522		202,948		77,206		93,118		234,518		1,658		3,914,970		18,045		3,933,015
Ending balance: individually evaluated for impairment	9,839		1,634		1,150		45		16		—		12,684		—		12,684
Ending balance: collectively evaluated for impairment	3,295,683		201,314		76,056		93,073		66,628		1,658		3,734,412		18,045		3,752,457
PPP loans not evaluated for impairment (2)	—		—		—		—		167,874		—		167,874		—		167,874

	December 31, 2020
	Real Estate
	Commercial		One-to-Four Family		Construction and Land		Multifamily		Home Equity and Lines of Credit		Commercial and Industrial		Other		Total Loans (excluding PCI)		PCI		Total
Allowance for credit losses on loans:
Ending balance: individually evaluated for impairment	$	66	$	—	$	—	$	—	$	3	$	4	$	—	$	73	$	—	$	73
Ending balance: collectively evaluated for impairment	5,944		207		1,214		26,995		257		1,838		198		36,653		881		37,534
Loans, net:
Ending balance	717,566		212,222		74,351		2,512,934		93,137		191,481		3,029		3,804,720		18,518		3,823,238
Ending balance: individually evaluated for impairment	10,650		1,903		—		626		47		16		—		13,242		—		13,242
Ending balance: collectively evaluated for impairment	706,916		210,319		74,351		2,512,308		93,090		64,930		3,029		3,664,943		18,518		3,683,461
PPP loans not evaluated for impairment (2)	—		—		—		—		—		126,535		—		126,535		—		126,535

(1) Commercial includes commercial real estate loans collateralized by owner-occupied, non-owner occupied, and multifamily properties.

(2) PPP loans are guaranteed by the SBA and therefore excluded from the allowance for loan losses.

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Deposits (Tables)

3 Months Ended

Mar. 31, 2021

Deposits [Abstract]

Deposit Account Balances

Deposit account balances are summarized as follows (in thousands):

	March 31, 2021		December 31, 2020
Non-interest-bearing checking	$	771,432	$	695,831
NOW and interest-bearing checking	918,367		905,208
Savings and money market	1,815,727		1,953,885
Certificates of deposit	630,190		521,627
Total deposits	$	4,135,716	$	4,076,551

Interest Expense on Deposits

Interest expense on deposit accounts is summarized for the periods indicated (in thousands):

	Three Months Ended March 31,
	2021		2020
NOW and interest-bearing checking, savings, and money market	$	932	$	4,073
Certificates of deposit	938		5,206
Total interest expense on deposit accounts	$	1,870	$	9,279

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Equity Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Stock Options Outstanding

The following table is a summary of the Company’s stock options outstanding as of March 31, 2021, and changes therein during the three months then ended.

	Number of Stock Options	Weighted Average Grant Date Fair Value		Weighted Average Exercise Price		Weighted Average Contractual Life (years)
Outstanding - December 31, 2020	2,214,193	$	4.01	$	13.94	3.96
Forfeited	(41,090)	3.96		13.62		—
Exercised	(54,990)	4.06		14.69		—
Outstanding - March 31, 2021	2,118,113	4.01		13.92		3.71
Exercisable - March 31, 2021	2,101,034	4.00		13.91		3.70

Status of the Company's Restricted Share Awards

The following is a summary of the status of the Company’s restricted stock awards as of March 31, 2021, and changes therein during the three months then ended.

	Number of Shares Awarded	Weighted Average Grant Date Fair Value
Non-vested at December 31, 2020	104,010	$	15.91
Granted	176,930	12.59
Vested	(38,470)	15.81
Forfeited	(4,022)	15.81
Non-vested at March 31, 2021	238,448	13.46

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Significant Fair Value of Assets and Liabilities Measured on Recurring and Non Recurring Basis

	Fair Value Measurements at March 31, 2021 Using:
	Carrying Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in thousands)
Measured on a recurring basis:
Assets:
Investment securities:
Debt securities available-for-sale:
U.S. Government agency	$	2,690	$	—	$	2,690	$	—
Mortgage-backed securities:
Pass-through certificates:
GSE	253,563		—		253,563		—
REMICs:
GSE	825,693		—		825,693		—
	1,079,256		—		1,079,256		—
Other debt securities:
Municipal bonds	103		—		103		—
Corporate bonds	124,442		—		124,442		—
Asset-backed securities	747		—		747		—
	125,292		—		125,292		—
Total debt securities available-for-sale	1,207,238		—		1,207,238		—
Trading securities	12,142		12,142		—		—
Equity securities	473		473		—		—
Total	$	1,219,853	$	12,615	$	1,207,238	$	—
Measured on a non-recurring basis:
Assets:
Loans individually evaluated for impairment:
Real estate loans:
Commercial real estate	$	3,871	$	—	$	—	$	3,871
One-to-four family residential mortgage	540		—		—		540
Multifamily	12		—		—		12
Home equity and lines of credit	29		—		—		29
Total individually evaluated real estate loans	4,452		—		—		4,452
Commercial and industrial loans	14		—		—		14
Other real estate owned	100		—		—		100
Total	$	4,566	$	—	$	—	$	4,566

	Fair Value Measurements at December 31, 2020 Using:
	Carrying Value		Quoted Prices in Active Markets for Identical Assets  (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs  (Level 3)
	(in thousands)
Measured on a recurring basis:
Assets:
Investment securities:
Debt securities available-for-sale:
U.S. Government agency securities	$	3,158	$	—	$	3,158	$	—
Mortgage-backed securities:
Pass-through certificates:
GSE	281,343		—		281,343		—
REMICs:
GSE	890,965		—		890,965		—
Non-GSE	4		—		4		—
	1,172,312		—		1,172,312		—
Other debt securities:
Municipal bonds	123		—		123		—
Corporate bonds	88,418		—		88,418		—
Asset-backed securities	794		—		794		—
	89,335		—		89,335		—
Total debt securities available-for-sale	1,264,805		—		1,264,805		—
Trading securities	12,291		12,291		—		—
Equity securities	253		253		—		—
Total	$	1,277,349	$	12,544	$	1,264,805	$	—
Measured on a non-recurring basis:
Assets:
Impaired loans:
Real estate loans:
Commercial real estate	$	5,268	$	—	$	—	$	5,268
Multifamily	16		—		—		16
Home equity and lines of credit	28		—		—		28
Total impaired real estate loans	5,312		—		—		5,312
Commercial and industrial loans	13		—		—		13
Total	$	5,325	$	—	$	—	$	5,325

Level 3 Assets Measured at Fair Value on a Non-Recurring Basis

The following table presents qualitative information for Level 3 assets measured at fair value on a non-recurring basis at March 31, 2021, and December 31, 2020 (dollars in thousands):

	Fair Value				Valuation Methodology	Unobservable Inputs	Range of Inputs
	March 31, 2021		December 31, 2020				March 31, 2021	December 31, 2020
Individually evaluated loans	$	4,466	$	5,325	Appraisals	Discount for costs to sell	7.0%	7.0%
						Discount for quick sale	10.0%	10.0%
					Discounted cash flows	Interest rates	4.88% to 6.25%	4.88% to 6.25%
Other real estate owned	100		—		Appraisals	Discount for costs to sell	7.0%	N/A

Estimated Fair Values of Significant Financial Instruments

The estimated fair value of the Company’s financial instruments at March 31, 2021, and December 31, 2020, is presented in the following tables (in thousands):

	March 31, 2021
			Estimated Fair Value
	Carrying Value		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	127,570	$	127,570	$	—	$	—	$	127,570
Trading securities	12,142		12,142		—		—		12,142
Debt securities available-for-sale	1,207,238		—		1,207,238		—		1,207,238
Debt securities held-to-maturity	6,913		—		7,241		—		7,241
Equity securities	473		473		—		—		473
FHLBNY stock, at cost	28,641		—		28,641		—		28,641
Net loans held-for-investment	3,889,818		—		—		3,959,088		3,959,088
Derivative assets	1,219		—		1,219		—		1,219
Financial liabilities:
Deposits	$	4,135,716	$	—	$	4,140,621	$	—	$	4,140,621
Borrowed funds	592,170		—		604,460		—		604,460
Advance payments by borrowers for taxes and insurance	24,027		—		24,027		—		24,027
Derivative liabilities	1,220		—		1,220		—		1,220

	December 31, 2020
			Estimated Fair Value
	Carrying Value		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	87,544	$	87,544	$	—	$	—	$	87,544
Trading securities	12,291		12,291		—		—		12,291
Debt securities available-for-sale	1,264,805		—		1,264,805		—		1,264,805
Debt securities held-to-maturity	7,234		—		7,574		—		7,574
Equity securities	253		253		—		—		253
FHLBNY stock, at cost	28,641		—		28,641		—		28,641
Loans held-for-sale	19,895		—		—		19,895		19,895
Net loans held-for-investment	3,785,631		—		—		3,842,054		3,842,054
Derivative assets	1,498		—		1,498		—		1,498
Financial liabilities:
Deposits	$	4,076,551	$	—	$	4,082,538	$	—	$	4,082,538
Borrowed funds	591,789		—		609,900		—		609,900
Advance payments by borrowers for taxes and insurance	19,677		—		19,677		—		19,677
Derivative liabilities	1,502		—		1,502		—		1,502

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Earnings Per Share Calculations and Reconciliation

The following is a summary of the Company’s earnings per share calculations and reconciliation of basic to diluted earnings per share for the periods indicated (in thousands, except per share data):

	Three Months Ended March 31,
	2021		2020
Net income available to common stockholders	$	18,677	$	4,551
Weighted average shares outstanding-basic	49,528,419		46,791,768
Effect of non-vested restricted stock and stock options outstanding	105,225		191,698
Weighted average shares outstanding-diluted	49,633,644		46,983,466
Earnings per share-basic	$	0.38	$	0.10
Earnings per share-diluted	$	0.38	$	0.10
Anti-dilutive shares	1,002,377		1,001,828

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Leases (Tables)

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Lease, Cost

Supplemental lease information at or for the three months ended March 31, 2021, and March 31, 2020 is as follows (dollars in thousands):

	Three Months Ended March 31,
	2021			2020
Operating lease cost	$	1,455		$	1,439
Variable lease cost	1,235			544
Net lease cost	$	2,690		$	1,983
Cash paid for amounts included in measurement of operating lease liabilities	$	1,708		$	1,545
Right-of-use assets obtained in exchange for new operating lease liabilities	$	—		$	3,028
Weighted average remaining lease term	12.26 years			12.71 years
Weighted average discount rate	3.60		%	3.59		%

Lessee, Operating Lease, Liability, Maturity

The following table summarizes lease payment obligations for each of the next five years and thereafter in addition to a reconcilement to the Company's current lease liability (in thousands):

Year	Amount
2021	$	4,669
2022	5,550
2023	5,504
2024	5,067
2025	4,710
Thereafter	28,196
Total lease payments	53,696
Less: imputed interest	11,629
Present value of lease liabilities	$	42,067

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Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Non-Interest Income

The following table summarizes non-interest income for the periods indicated (in thousands):

	Three Months Ended March 31,
	2021		2020
Fees and service charges for customer services:
Service charges	$	720	$	753
ATM and card interchange fees	399		304
Investment fees	78		63
Total fees and service charges for customer services	1,197		1,120
Income on bank-owned life insurance (1)	848		876
Gains (losses) on available-for-sale debt securities, net (1)	97		(13)
Gains (losses) on trading securities, net (1)	364		(1,992)
Swap income (1)	—		76
Other	130		41
Total non-interest income	$	2,636	$	108

(1) Not in scope of Topic 606

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Derivatives (Tables)

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Liabilities at Fair Value

The table below presents the fair value of the derivatives as well as their location on the consolidated balance sheets (in thousands):

	Fair Value
Balance Sheet Location	March 31, 2021		December 31, 2020
Other assets	$	1,219	$	1,498
Other liabilities	1,220		1,502

Schedule of Derivative Assets at Fair Value

The table below presents the fair value of the derivatives as well as their location on the consolidated balance sheets (in thousands):

	Fair Value
Balance Sheet Location	March 31, 2021		December 31, 2020
Other assets	$	1,219	$	1,498
Other liabilities	1,220		1,502

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Consolidated Financial Statements - Narrative (Details) $ in Thousands		3 Months Ended	12 Months Ended
	Dec. 31, 2020 USD ($)	Mar. 31, 2021 USD ($) loan	Mar. 31, 2021 USD ($) loan	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Unusual or Infrequent Item, or Both [Line Items]
Allowance for credit loss	$ 37,607	$ 43,197	$ 43,197	$ 36,800	$ 28,707
Unfounded credit commitment	808	1,702	1,702
Net loans held-for-investment	3,785,631	$ 3,889,818	3,889,818
Cumulative Effect, Period of Adoption, Adjustment
Unusual or Infrequent Item, or Both [Line Items]
Increase in allowance for credit losses	11,100
Allowance for credit loss	10,353
Unfounded credit commitment	737
PCD loan related reserves	6,800
Non-PCD loan related reserves	$ 4,300
COVID-19
Unusual or Infrequent Item, or Both [Line Items]
Loan modification program, payment deferral period		90 days
Loan modification program, extension for payment deferral period		90 days
Net loans held-for-investment		$ 28,800	$ 28,800
COVID-19
Unusual or Infrequent Item, or Both [Line Items]
Number of loans approved | loan		1,757	1,757
Net loans held-for-investment		$ 167,900	$ 167,900
Loan processing fee		8,800	8,800
Loan processing fee recognized as earnings		$ 1,300	$ 3,100

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Business Combinations - Additional Information (Details) $ in Thousands	Jul. 01, 2020 USD ($) loan lease_obligation shares	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Total assets		$ 5,576,924	$ 5,514,544
Net loans held-for-investment		3,889,818	3,785,631
Deposits		4,135,716	4,076,551
Operating lease liabilities		42,067	42,734
Operating lease right-of-use assets		$ 35,662	$ 36,741
Victory
Business Acquisition [Line Items]
Total assets	$ 402,800
Net loans held-for-investment	180,400
Deposits	$ 354,600
Number of branches | loan	6
Victory
Business Acquisition [Line Items]
Common stock exchange rate (shares) | shares	2.0463
Number of lease obligations | lease_obligation	5
Operating lease liabilities	$ 2,500
Operating lease right-of-use assets	$ 2,500

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Business Combinations - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Jul. 01, 2020
Liabilities assumed:
Goodwill	$ 41,320	$ 41,320
Victory
Business Acquisition [Line Items]
Total Purchase Price			$ 41,173
Assets acquired:
Cash and cash equivalents			72,875
Debt securities available for sale			126,931
Loans			180,431
Accrued interest receivable			1,415
Bank-owned life insurance			5,714
Premises and equipment			7,789
Other assets			4,702
Total assets acquired			399,857
Liabilities assumed:
Deposits			354,592
Other liabilities			7,001
Total liabilities assumed			361,593
Net assets acquired			38,264
Goodwill			$ 2,909

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Business Combinations - Summary of Credit Impaired Loans Acquired (Details) - Victory $ in Thousands	Jul. 01, 2020 USD ($)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest	$ 7,809
Contractual cash flows not expected to be collected (non-accretable discount)	3,315
Expected cash flows to be collected at acquisition	4,494
Interest component of expected cash flows (accretable yield)	(599)
Fair value of acquired loans	$ 3,895

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Debt Securities Available-for-Sale - Comparative Summary of Mortgage-Backed Securities and Other Securities Available-for-Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 1,190,347	$ 1,246,673
Gross unrealized gains	17,820	18,862
Gross unrealized losses	(929)	(730)
Estimated fair value	1,207,238	1,264,805
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	2,758	3,168
Gross unrealized gains	0	0
Gross unrealized losses	(68)	(10)
Estimated fair value	2,690	3,158
Real estate mortgage investment conduits (REMICs)
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,063,022	1,155,285
Gross unrealized gains	16,914	17,747
Gross unrealized losses	(680)	(720)
Estimated fair value	1,079,256	1,172,312
Other debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	124,567	88,220
Gross unrealized gains	906	1,115
Gross unrealized losses	(181)	0
Estimated fair value	125,292	89,335
GSE | Pass-through Certificates
Debt Securities, Available-for-sale [Line Items]
Amortized cost	244,399	270,867
Gross unrealized gains	9,522	10,720
Gross unrealized losses	(358)	(244)
Estimated fair value	253,563	281,343
GSE | Real estate mortgage investment conduits (REMICs)
Debt Securities, Available-for-sale [Line Items]
Amortized cost	818,623	884,414
Gross unrealized gains	7,392	7,027
Gross unrealized losses	(322)	(476)
Estimated fair value	825,693	890,965
Non-GSE | Real estate mortgage investment conduits (REMICs)
Debt Securities, Available-for-sale [Line Items]
Amortized cost		4
Gross unrealized gains		0
Gross unrealized losses		0
Estimated fair value		4
Municipal bonds | Other debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	102	122
Gross unrealized gains	1	1
Gross unrealized losses	0	0
Estimated fair value	103	123
Corporate bonds | Other debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	123,732	87,319
Gross unrealized gains	891	1,099
Gross unrealized losses	(181)	0
Estimated fair value	124,442	88,418
Asset-backed securities | Other debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	733	779
Gross unrealized gains	14	15
Gross unrealized losses	0	0
Estimated fair value	$ 747	$ 794

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Debt Securities Available-for-Sale - Summary of Expected Maturity Distribution of Debt Securities Available-for-Sale, Other than Mortgage-Backed Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized cost
Amortized cost	$ 1,190,347	$ 1,246,673
Estimated fair value
Estimated fair value	1,207,238	$ 1,264,805
Other Than Mortgage Backed Securities
Amortized cost
Due in one year or less	25,288
Due after one year through five years	83,535
Due after five years through ten years	17,769
Due after ten years	733
Amortized cost	127,325
Estimated fair value
Due in one year or less	25,872
Due after one year through five years	83,815
Due after five years through ten years	17,548
Due after ten years	747
Estimated fair value	$ 127,982

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Debt Securities Available-for-Sale - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) security	Mar. 31, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, restricted	$ 587,200
Proceeds from sales and calls of debt securities available-for-sale	5,942	$ 0
Debt securities, available-for-sale, realized gain	97	0
Debt securities, available-for-sale, realized loss	0	13
Debt securities, trading, realized gain (loss)	364	$ (2,000)
Accrued interest receivable associated with debt securities available-for-sale	$ 1,500
Real Estate Mortgage Investment Conduits (REMICs) | GSE
Debt Securities, Available-for-sale [Line Items]
Number of debt securities, unrealized loss position less than 12 months | security	1
Real Estate Mortgage Investment Conduits (REMICs) | GSE | Pass Through
Debt Securities, Available-for-sale [Line Items]
Number of debt securities, unrealized loss position longer than 12 months | security	6
Number of debt securities, unrealized loss position less than 12 months | security	22
Real Estate Mortgage Investment Conduits (REMICs) | GSE | Non Pass Through
Debt Securities, Available-for-sale [Line Items]
Number of debt securities, unrealized loss position less than 12 months | security	44
Real Estate Mortgage Investment Conduits (REMICs) | Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Number of debt securities, unrealized loss position less than 12 months | security	5

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Debt Securities Available-for-Sale - Gross Unrealized Losses on Mortgage-Backed Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Unrealized losses, less than 12 months	$ (924)	$ (719)
Estimated fair value, less than 12 months	128,847	242,146
Unrealized losses, 12 months or more	(5)	(11)
Estimated fair value, 12 months or more	254	459
Unrealized losses, total	(929)	(730)
Estimated fair value, total	129,101	242,605
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Unrealized losses, less than 12 months	(68)	(10)
Estimated fair value, less than 12 months	2,690	3,158
Unrealized losses, 12 months or more	0	0
Estimated fair value, 12 months or more	0	0
Unrealized losses, total	(68)	(10)
Estimated fair value, total	2,690	3,158
GSE | Pass-through Certificates
Debt Securities, Available-for-sale [Line Items]
Unrealized losses, less than 12 months	(353)	(233)
Estimated fair value, less than 12 months	33,531	28,419
Unrealized losses, 12 months or more	(5)	(11)
Estimated fair value, 12 months or more	254	459
Unrealized losses, total	(358)	(244)
Estimated fair value, total	33,785	28,878
GSE | Real estate mortgage investment conduits (REMICs)
Debt Securities, Available-for-sale [Line Items]
Unrealized losses, less than 12 months	(322)	(476)
Estimated fair value, less than 12 months	57,352	210,569
Unrealized losses, 12 months or more	0	0
Estimated fair value, 12 months or more	0	0
Unrealized losses, total	(322)	(476)
Estimated fair value, total	57,352	$ 210,569
Corporate bonds | Other debt securities
Debt Securities, Available-for-sale [Line Items]
Unrealized losses, less than 12 months	(181)
Estimated fair value, less than 12 months	35,274
Unrealized losses, 12 months or more	0
Estimated fair value, 12 months or more	0
Unrealized losses, total	(181)
Estimated fair value, total	$ 35,274

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Debt Securities Held-to-Maturity - Mortgage Backed Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 6,913	$ 7,234
Gross Unrealized Gains	328	340
Gross Unrealized Losses	0	0
Estimated Fair Value	7,241	7,574
Mortgage Backed Securities Pass Through Certificates
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	6,913	7,234
Gross Unrealized Gains	328	340
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 7,241	$ 7,574

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Debt Securities Held-to-Maturity - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) security	Mar. 31, 2020 USD ($)	Dec. 31, 2020 security
Investments, Debt and Equity Securities [Abstract]
Held-to-maturity securities sold	$ 0	$ 0
Held-to-maturity securities pledged to secure borrowings and deposits	$ 5,900,000
Held-to-maturity securities unrealized loss position | security	0		0
Accrued interest receivable associated with held-to-maturity securities	$ 20,800

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Equity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Equity securities	$ 473	$ 253

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Loans - Net Loans Held-for-Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Loans held-for-investment, net	$ 3,933,015	$ 3,823,238
Less: allowance for loan losses	(43,197)	(37,607)	$ (36,800)	$ (28,707)
Net loans held-for-investment	3,889,818	3,785,631
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Loans and Leases Receivable Disclosure [Line Items]
Deferred origination loan costs, net	0	4,795
Loans held-for-investment, net	3,914,970	3,804,720
Less: allowance for loan losses	(37,915)	(36,726)	(36,011)	(27,918)
PCD/PCI loans
Loans and Leases Receivable Disclosure [Line Items]
Loans held-for-investment, net	18,045	18,518
Less: allowance for loan losses	(5,282)	(881)	(789)	(789)
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Loans and Leases Receivable Disclosure [Line Items]
Loans	3,678,794	3,602,544
Loans held-for-investment, net	3,678,794	3,610,210
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Multifamily
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,571,409	2,509,310
Loans held-for-investment, net	2,571,409	2,512,934
Less: allowance for loan losses			(26,889)	(20,203)
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial mortgage
Loans and Leases Receivable Disclosure [Line Items]
Loans	734,113	716,973
Loans held-for-investment, net	734,113	717,566
Less: allowance for loan losses			(5,444)	(4,891)
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | One-to-four family residential mortgage
Loans and Leases Receivable Disclosure [Line Items]
Loans	202,948	210,817
Loans held-for-investment, net	202,948	212,222
Less: allowance for loan losses	(5,172)	(207)	(312)	(180)
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity and lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Loans	93,118	91,126
Loans held-for-investment, net	93,118	93,137
Less: allowance for loan losses	(643)	(260)	(574)	(317)
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Construction and land
Loans and Leases Receivable Disclosure [Line Items]
Loans	77,206	74,318
Loans held-for-investment, net	77,206	74,351
Less: allowance for loan losses	(269)	(1,214)	(671)	(536)
Commercial and industrial and other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Loans and Leases Receivable Disclosure [Line Items]
Loans	236,176	197,381
Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Loans and Leases Receivable Disclosure [Line Items]
Loans	234,518	194,352
Loans held-for-investment, net	234,518	191,481
Less: allowance for loan losses	(2,940)	(1,842)	(2,035)	(1,640)
Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,658	3,029
Loans held-for-investment, net	1,658	3,029
Less: allowance for loan losses	(9)	(198)	$ (86)	$ (151)
Paycheck Protection Program | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 167,900	$ 126,500

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Loans - Narrative, Loans Held-for-Investment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-sale	$ 0	$ 19,895
PCI loans	$ 3,933,015	$ 3,823,238
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of PCI loans	26.00%	23.00%
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of PCI loans	44.00%	40.00%
One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of PCI loans	16.00%	22.00%
PCD/PCI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	$ 18,045	$ 18,518

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Loans - Loans Held-for-Investment, Excluding PCD Loans, Net of Deferred Fees and Costs (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment, net	$ 3,933,015	$ 3,823,238
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	275,214
2020	790,659
2019	562,332
2018	517,337
2017	379,920
Prior	1,318,252
Revolving Loans	71,256
Loans held-for-investment, net	3,914,970	3,804,720
Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment, net		3,731,891
Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment, net		24,145
Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment, net		48,684
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	206,585
2020	676,525
2019	555,323
2018	513,116
2017	378,417
Prior	1,304,051
Revolving Loans	44,777
Loans held-for-investment, net	3,678,794	3,610,210
Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	161,305
2020	562,841
2019	412,000
2018	348,996
2017	283,681
Prior	802,542
Revolving Loans	44
Loans held-for-investment, net	2,571,409	2,512,934
Real estate loans: | Multifamily | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	161,305
2020	562,841
2019	407,309
2018	345,635
2017	283,681
Prior	793,689
Revolving Loans	44
Loans held-for-investment, net	2,554,504	2,497,556
Real estate loans: | Multifamily | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	450
Revolving Loans	0
Loans held-for-investment, net	450	458
Real estate loans: | Multifamily | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	4,691
2018	3,361
2017	0
Prior	8,403
Revolving Loans	0
Loans held-for-investment, net	16,455	14,920
Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	33,829
2020	75,026
2019	111,164
2018	102,343
2017	70,809
Prior	336,859
Revolving Loans	4,083
Loans held-for-investment, net	734,113	717,566
Real estate loans: | Commercial mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	33,829
2020	72,556
2019	100,207
2018	92,969
2017	66,730
Prior	312,858
Revolving Loans	3,583
Loans held-for-investment, net	682,732	667,568
Real estate loans: | Commercial mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	1,297
2018	9,046
2017	0
Prior	9,506
Revolving Loans	500
Loans held-for-investment, net	20,349	20,422
Real estate loans: | Commercial mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	2,470
2019	9,660
2018	328
2017	4,079
Prior	14,495
Revolving Loans	0
Loans held-for-investment, net	31,032	29,576
Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	966
2020	9,689
2019	15,256
2018	15,717
2017	13,097
Prior	146,610
Revolving Loans	1,613
Loans held-for-investment, net	202,948	212,222
Real estate loans: | One-to-four family residential mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	966
2020	9,689
2019	14,189
2018	15,717
2017	13,097
Prior	141,652
Revolving Loans	1,613
Loans held-for-investment, net	196,923	207,633
Real estate loans: | One-to-four family residential mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	467
2018	0
2017	0
Prior	2,428
Revolving Loans	0
Loans held-for-investment, net	2,895	2,456
Real estate loans: | One-to-four family residential mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	600
2018	0
2017	0
Prior	2,530
Revolving Loans	0
Loans held-for-investment, net	3,130	2,133
Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	6,654
2020	14,328
2019	6,910
2018	37,140
2017	7,515
Prior	3,641
Revolving Loans	1,018
Loans held-for-investment, net	77,206	74,351
Real estate loans: | Construction and land | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	6,654
2020	14,328
2019	5,760
2018	36,750
2017	7,515
Prior	3,641
Revolving Loans	1,018
Loans held-for-investment, net	75,666	74,351
Real estate loans: | Construction and land | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Revolving Loans	0
Loans held-for-investment, net	0	0
Real estate loans: | Construction and land | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	1,150
2018	390
2017	0
Prior	0
Revolving Loans	0
Loans held-for-investment, net	1,540	0
Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	3,831
2020	14,641
2019	9,993
2018	8,920
2017	3,315
Prior	14,399
Revolving Loans	38,019
Loans held-for-investment, net	93,118	93,137
Real estate loans: | Home equity and lines of credit | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	3,831
2020	14,641
2019	9,894
2018	8,832
2017	3,315
Prior	13,848
Revolving Loans	38,019
Loans held-for-investment, net	92,380	92,385
Real estate loans: | Home equity and lines of credit | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	306
Revolving Loans	0
Loans held-for-investment, net	306	311
Real estate loans: | Home equity and lines of credit | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	99
2018	88
2017	0
Prior	245
Revolving Loans	0
Loans held-for-investment, net	432	441
Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	67,372
2020	113,943
2019	6,977
2018	4,170
2017	1,503
Prior	14,147
Revolving Loans	26,406
Loans held-for-investment, net	234,518	191,481
Commercial and industrial loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	67,372
2020	113,363
2019	6,407
2018	3,462
2017	1,356
Prior	12,961
Revolving Loans	26,406
Loans held-for-investment, net	231,327	189,372
Commercial and industrial loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	81
2019	210
2018	42
2017	147
Prior	324
Revolving Loans	0
Loans held-for-investment, net	804	498
Commercial and industrial loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	499
2019	360
2018	666
2017	0
Prior	862
Revolving Loans	0
Loans held-for-investment, net	2,387	1,611
Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	1,257
2020	191
2019	32
2018	51
2017	0
Prior	54
Revolving Loans	73
Loans held-for-investment, net	1,658	3,029
Other loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	1,257
2020	191
2019	32
2018	51
2017	0
Prior	51
Revolving Loans	73
Loans held-for-investment, net	1,655	3,026
Other loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment, net		0
Other loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	3
Revolving Loans	0
Loans held-for-investment, net	$ 3	$ 3

XML

Loans - Investment of Originated Loans Held-for-Investment by Loan Type and Credit Quality Indicator (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	$ 3,933,015	$ 3,823,238
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	3,914,970	3,804,720
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	3,678,794	3,610,210
Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	234,518	191,481
Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	1,658	3,029
Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net		3,731,891
Pass | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	231,327	189,372
Pass | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	1,655	3,026
Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net		24,145
Special Mention | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	804	498
Special Mention | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net		0
Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net		48,684
Substandard | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	2,387	1,611
Substandard | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	3	3
Multifamily | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	2,571,409	2,512,934
Multifamily | Pass | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	2,554,504	2,497,556
Multifamily | Special Mention | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	450	458
Multifamily | Substandard | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	16,455	14,920
Commercial mortgage | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	734,113	717,566
Commercial mortgage | Pass | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	682,732	667,568
Commercial mortgage | Special Mention | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	20,349	20,422
Commercial mortgage | Substandard | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	31,032	29,576
One-to-Four Family | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	202,948	212,222
One-to-Four Family | Pass | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	196,923	207,633
One-to-Four Family | Special Mention | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	2,895	2,456
One-to-Four Family | Substandard | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	3,130	2,133
Construction and land | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	77,206	74,351
Construction and land | Pass | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	75,666	74,351
Construction and land | Special Mention | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	0	0
Construction and land | Substandard | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	1,540	0
Home equity and lines of credit | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	93,118	93,137
Home equity and lines of credit | Pass | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	92,380	92,385
Home equity and lines of credit | Special Mention | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	306	311
Home equity and lines of credit | Substandard | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans held-for-investment, net	$ 432	$ 441

XML

Loans - Narrative, Past Due and Non-Accrual Loans (Details) - USD ($)	3 Months Ended	9 Months Ended
	Mar. 31, 2021	Sep. 30, 2020	Dec. 31, 2020
Receivables [Abstract]
Non-accrual loans	$ 8,446,000		$ 8,500,000
Criteria days for delinquent status	90 days	90 days
Principal balance of loans on non accrual status, less then	$ 500,000
Impairment of loans	5,400,000		5,500,000
Loans on non accrual status with principal balances below threshold definition of an impaired loan	3,000,000.0		3,000,000.0
90 days or more past due and accruing	1,600,000		1,100,000
Loans held-for-sale	$ 0		$ 19,895,000

XML

Loans - Details and Delinquency Status Of Nonperforming Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	$ 1,600	$ 1,100
Loans held-for-investment, net	3,933,015	3,823,238
Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	3,282	3,302
Non-Accruing Loans	8,446	8,516
90 Days or More Past Due and Accruing	1,648	1,113
Loans held-for-investment, net	10,094	9,629
Non-Performing Loans | Real estate loans:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	3,281	3,302
Non-Accruing Loans	8,248	8,479
90 Days or More Past Due and Accruing	907	674
Loans held-for-investment, net	9,155	9,153
Non-Performing Loans | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	2,817	2,829
Non-Accruing Loans	4,961	6,229
90 Days or More Past Due and Accruing	219	500
Loans held-for-investment, net	5,180	6,729
Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	406	413
Non-Accruing Loans	805	906
90 Days or More Past Due and Accruing	172	174
Loans held-for-investment, net	977	1,080
Non-Performing Loans | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0
Non-Accruing Loans	1,150
90 Days or More Past Due and Accruing	0
Loans held-for-investment, net	1,150
Non-Performing Loans | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0	0
Non-Accruing Loans	1,145	1,153
90 Days or More Past Due and Accruing	516	0
Loans held-for-investment, net	1,661	1,153
Non-Performing Loans | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	58	60
Non-Accruing Loans	187	191
90 Days or More Past Due and Accruing	0	0
Loans held-for-investment, net	187	191
Non-Performing Loans | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1	0
Non-Accruing Loans	198	37
90 Days or More Past Due and Accruing	738	436
Loans held-for-investment, net	936	473
Non-Performing Loans | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0	0
Non-Accruing Loans	0	0
90 Days or More Past Due and Accruing	3	3
Loans held-for-investment, net	3	3
Non-Performing Loans | Substandard | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	2,817	2,829
Non-Accruing Loans	4,961	6,229
90 Days or More Past Due and Accruing	219	0
Loans held-for-investment, net	5,180	6,229
Non-Performing Loans | Substandard | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	406	413
Non-Accruing Loans	805	906
90 Days or More Past Due and Accruing	172	174
Loans held-for-investment, net	977	1,080
Non-Performing Loans | Substandard | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0
Non-Accruing Loans	1,150
90 Days or More Past Due and Accruing	0
Loans held-for-investment, net	1,150
Non-Performing Loans | Substandard | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0	0
Non-Accruing Loans	1,145	1,153
90 Days or More Past Due and Accruing	516	0
Loans held-for-investment, net	1,661	1,153
Non-Performing Loans | Substandard | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	58	60
Non-Accruing Loans	187	191
90 Days or More Past Due and Accruing	0	0
Loans held-for-investment, net	187	191
Non-Performing Loans | Substandard | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1	0
Non-Accruing Loans	198	37
90 Days or More Past Due and Accruing	561	250
Loans held-for-investment, net	759	287
Non-Performing Loans | Pass | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		0
Non-Accruing Loans		0
90 Days or More Past Due and Accruing		500
Loans held-for-investment, net		500
Non-Performing Loans | Pass | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0	0
Non-Accruing Loans	0	0
90 Days or More Past Due and Accruing	92	101
Loans held-for-investment, net	92	101
Non-Performing Loans | Pass | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0	0
Non-Accruing Loans	0	0
90 Days or More Past Due and Accruing	3	3
Loans held-for-investment, net	3	3
Non-Performing Loans | Special Mention | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0	0
Non-Accruing Loans	0	0
90 Days or More Past Due and Accruing	85	85
Loans held-for-investment, net	85	85
Non-Performing Loans | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	136	537
Non-Performing Loans | 30-89 Days Past Due | Real estate loans:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	100	537
Non-Performing Loans | 30-89 Days Past Due | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	100	537
Non-Performing Loans | 30-89 Days Past Due | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0
Non-Performing Loans | 30-89 Days Past Due | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	36	0
Non-Performing Loans | 30-89 Days Past Due | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	100	537
Non-Performing Loans | 30-89 Days Past Due | Substandard | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	36	0
Non-Performing Loans | 30-89 Days Past Due | Pass | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans		0
Non-Performing Loans | 30-89 Days Past Due | Pass | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Pass | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 30-89 Days Past Due | Special Mention | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	5,028	4,677
Non-Performing Loans | 90 Days or More Past Due | Real estate loans:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	4,867	4,640
Non-Performing Loans | 90 Days or More Past Due | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	2,044	2,863
Non-Performing Loans | 90 Days or More Past Due | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	399	493
Non-Performing Loans | 90 Days or More Past Due | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	1,150
Non-Performing Loans | 90 Days or More Past Due | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	1,145	1,153
Non-Performing Loans | 90 Days or More Past Due | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	129	131
Non-Performing Loans | 90 Days or More Past Due | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	161	37
Non-Performing Loans | 90 Days or More Past Due | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 90 Days or More Past Due | Substandard | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	2,044	2,863
Non-Performing Loans | 90 Days or More Past Due | Substandard | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	399	493
Non-Performing Loans | 90 Days or More Past Due | Substandard | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	1,150
Non-Performing Loans | 90 Days or More Past Due | Substandard | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	1,145	1,153
Non-Performing Loans | 90 Days or More Past Due | Substandard | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	129	131
Non-Performing Loans | 90 Days or More Past Due | Substandard | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	161	37
Non-Performing Loans | 90 Days or More Past Due | Pass | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans		0
Non-Performing Loans | 90 Days or More Past Due | Pass | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 90 Days or More Past Due | Pass | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	0	0
Non-Performing Loans | 90 Days or More Past Due | Special Mention | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accruing Loans	$ 0	$ 0

XML

Loans - Loans Held-for-Investment by Performing and Non-Performing Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	$ 1,600	$ 1,100
Loans held-for-investment, net	3,933,015	3,823,238
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	1,648
Total Past Due	20,959
Current	3,894,011
Loans held-for-investment, net	3,914,970	3,804,720
Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		3,731,891
Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		24,145
Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		48,684
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	907
Total Past Due	17,535
Current	3,661,259
Loans held-for-investment, net	3,678,794	3,610,210
Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	219
Total Past Due	6,820
Current	727,293
Loans held-for-investment, net	734,113	717,566
Real estate loans: | Commercial mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	1,651
Current	681,081
Loans held-for-investment, net	682,732	667,568
Real estate loans: | Commercial mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	0
Current	20,349
Loans held-for-investment, net	20,349	20,422
Real estate loans: | Commercial mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	219
Total Past Due	5,169
Current	25,863
Loans held-for-investment, net	31,032	29,576
Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	172
Total Past Due	4,594
Current	198,354
Loans held-for-investment, net	202,948	212,222
Real estate loans: | One-to-four family residential mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	1,827
Current	195,096
Loans held-for-investment, net	196,923	207,633
Real estate loans: | One-to-four family residential mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	1,085
Current	1,810
Loans held-for-investment, net	2,895	2,456
Real estate loans: | One-to-four family residential mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	172
Total Past Due	1,682
Current	1,448
Loans held-for-investment, net	3,130	2,133
Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	1,540
Current	75,666
Loans held-for-investment, net	77,206	74,351
Real estate loans: | Construction and land | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	0
Current	75,666
Loans held-for-investment, net	75,666	74,351
Real estate loans: | Construction and land | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net	0	0
Real estate loans: | Construction and land | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	1,540
Current	0
Loans held-for-investment, net	1,540	0
Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	516
Total Past Due	4,080
Current	2,567,329
Loans held-for-investment, net	2,571,409	2,512,934
Real estate loans: | Multifamily | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	1,256
Current	2,553,248
Loans held-for-investment, net	2,554,504	2,497,556
Real estate loans: | Multifamily | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	0
Current	450
Loans held-for-investment, net	450	458
Real estate loans: | Multifamily | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	516
Total Past Due	2,824
Current	13,631
Loans held-for-investment, net	16,455	14,920
Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	501
Current	92,617
Loans held-for-investment, net	93,118	93,137
Real estate loans: | Home equity and lines of credit | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	229
Current	92,151
Loans held-for-investment, net	92,380	92,385
Real estate loans: | Home equity and lines of credit | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	44
Current	262
Loans held-for-investment, net	306	311
Real estate loans: | Home equity and lines of credit | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	228
Current	204
Loans held-for-investment, net	432	441
Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	738
Total Past Due	3,414
Current	231,104
Loans held-for-investment, net	234,518	191,481
Commercial and industrial loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	92
Total Past Due	1,563
Current	229,764
Loans held-for-investment, net	231,327	189,372
Commercial and industrial loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	85
Total Past Due	344
Current	460
Loans held-for-investment, net	804	498
Commercial and industrial loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	561
Total Past Due	1,507
Current	880
Loans held-for-investment, net	2,387	1,611
Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	3
Total Past Due	10
Current	1,648
Loans held-for-investment, net	1,658	3,029
Other loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	0
Total Past Due	7
Current	1,648
Loans held-for-investment, net	1,655	3,026
Other loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Other loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	3
Total Past Due	3
Current	0
Loans held-for-investment, net	3	3
Performing (Accruing) Loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		3,795,091
Performing (Accruing) Loans | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		3,601,057
Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		710,837
Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		667,068
Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		20,422
Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		23,347
Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		211,142
Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		207,633
Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		2,456
Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		1,053
Performing (Accruing) Loans | Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		74,351
Performing (Accruing) Loans | Real estate loans: | Construction and land | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		74,351
Performing (Accruing) Loans | Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		2,511,781
Performing (Accruing) Loans | Real estate loans: | Multifamily | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		2,497,556
Performing (Accruing) Loans | Real estate loans: | Multifamily | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		458
Performing (Accruing) Loans | Real estate loans: | Multifamily | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		13,767
Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		92,946
Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		92,385
Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		311
Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		250
Performing (Accruing) Loans | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		191,008
Performing (Accruing) Loans | Commercial and industrial loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		189,271
Performing (Accruing) Loans | Commercial and industrial loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		413
Performing (Accruing) Loans | Commercial and industrial loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		1,324
Performing (Accruing) Loans | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		3,026
Performing (Accruing) Loans | Other loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		3,026
Performing (Accruing) Loans | Other loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		0
Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	8,446	8,516
90 Days or More Past Due and Accruing	1,648	1,113
Current	3,282	3,302
Loans held-for-investment, net	10,094	9,629
Non-Performing Loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		9,629
Non-Performing Loans | Real estate loans:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	8,248	8,479
90 Days or More Past Due and Accruing	907	674
Current	3,281	3,302
Loans held-for-investment, net	9,155	9,153
Non-Performing Loans | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		9,153
Non-Performing Loans | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	4,961	6,229
90 Days or More Past Due and Accruing	219	500
Current	2,817	2,829
Loans held-for-investment, net	5,180	6,729
Non-Performing Loans | Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		6,729
Non-Performing Loans | Real estate loans: | Commercial mortgage | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		0
90 Days or More Past Due and Accruing		500
Current		0
Loans held-for-investment, net		500
Non-Performing Loans | Real estate loans: | Commercial mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		500
Non-Performing Loans | Real estate loans: | Commercial mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | Commercial mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	4,961	6,229
90 Days or More Past Due and Accruing	219	0
Current	2,817	2,829
Loans held-for-investment, net	5,180	6,229
Non-Performing Loans | Real estate loans: | Commercial mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		6,229
Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	805	906
90 Days or More Past Due and Accruing	172	174
Current	406	413
Loans held-for-investment, net	977	1,080
Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		1,080
Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	805	906
90 Days or More Past Due and Accruing	172	174
Current	406	413
Loans held-for-investment, net	977	1,080
Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		1,080
Non-Performing Loans | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,150
90 Days or More Past Due and Accruing	0
Current	0
Loans held-for-investment, net	1,150
Non-Performing Loans | Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | Construction and land | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | Construction and land | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,150
90 Days or More Past Due and Accruing	0
Current	0
Loans held-for-investment, net	1,150
Non-Performing Loans | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,145	1,153
90 Days or More Past Due and Accruing	516	0
Current	0	0
Loans held-for-investment, net	1,661	1,153
Non-Performing Loans | Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		1,153
Non-Performing Loans | Real estate loans: | Multifamily | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | Multifamily | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | Multifamily | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,145	1,153
90 Days or More Past Due and Accruing	516	0
Current	0	0
Loans held-for-investment, net	1,661	1,153
Non-Performing Loans | Real estate loans: | Multifamily | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		1,153
Non-Performing Loans | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	187	191
90 Days or More Past Due and Accruing	0	0
Current	58	60
Loans held-for-investment, net	187	191
Non-Performing Loans | Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		191
Non-Performing Loans | Real estate loans: | Home equity and lines of credit | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | Home equity and lines of credit | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Real estate loans: | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	187	191
90 Days or More Past Due and Accruing	0	0
Current	58	60
Loans held-for-investment, net	187	191
Non-Performing Loans | Real estate loans: | Home equity and lines of credit | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		191
Non-Performing Loans | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	198	37
90 Days or More Past Due and Accruing	738	436
Current	1	0
Loans held-for-investment, net	936	473
Non-Performing Loans | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		473
Non-Performing Loans | Commercial and industrial loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due and Accruing	92	101
Current	0	0
Loans held-for-investment, net	92	101
Non-Performing Loans | Commercial and industrial loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		101
Non-Performing Loans | Commercial and industrial loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due and Accruing	85	85
Current	0	0
Loans held-for-investment, net	85	85
Non-Performing Loans | Commercial and industrial loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		85
Non-Performing Loans | Commercial and industrial loans | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	198	37
90 Days or More Past Due and Accruing	561	250
Current	1	0
Loans held-for-investment, net	759	287
Non-Performing Loans | Commercial and industrial loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		287
Non-Performing Loans | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due and Accruing	3	3
Current	0	0
Loans held-for-investment, net	3	3
Non-Performing Loans | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		3
Non-Performing Loans | Other loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due and Accruing	3	3
Current	0	0
Loans held-for-investment, net	3	3
Non-Performing Loans | Other loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		0
Non-Performing Loans | Other loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-investment, net		3
0-29 Days Past Due | Performing (Accruing) Loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		3,781,109
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		3,587,846
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		702,045
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		660,996
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		20,350
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		20,699
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		209,990
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		207,351
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		1,586
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		1,053
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		73,357
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Construction and land | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		73,357
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		2,509,888
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Multifamily | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		2,496,273
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Multifamily | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		458
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Multifamily | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		13,157
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		92,566
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		92,305
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		111
0-29 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		150
0-29 Days Past Due | Performing (Accruing) Loans | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		190,248
0-29 Days Past Due | Performing (Accruing) Loans | Commercial and industrial loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		188,639
0-29 Days Past Due | Performing (Accruing) Loans | Commercial and industrial loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		352
0-29 Days Past Due | Performing (Accruing) Loans | Commercial and industrial loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		1,257
0-29 Days Past Due | Performing (Accruing) Loans | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		3,015
0-29 Days Past Due | Performing (Accruing) Loans | Other loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		3,015
0-29 Days Past Due | Performing (Accruing) Loans | Other loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		0
30-89 Days Past Due | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	14,283
30-89 Days Past Due | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	11,761
30-89 Days Past Due | Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	4,557
30-89 Days Past Due | Real estate loans: | Commercial mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,651
30-89 Days Past Due | Real estate loans: | Commercial mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
30-89 Days Past Due | Real estate loans: | Commercial mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	2,906
30-89 Days Past Due | Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	4,023
30-89 Days Past Due | Real estate loans: | One-to-four family residential mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,827
30-89 Days Past Due | Real estate loans: | One-to-four family residential mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,085
30-89 Days Past Due | Real estate loans: | One-to-four family residential mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,111
30-89 Days Past Due | Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	390
30-89 Days Past Due | Real estate loans: | Construction and land | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
30-89 Days Past Due | Real estate loans: | Construction and land | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	390
30-89 Days Past Due | Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	2,419
30-89 Days Past Due | Real estate loans: | Multifamily | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,256
30-89 Days Past Due | Real estate loans: | Multifamily | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
30-89 Days Past Due | Real estate loans: | Multifamily | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,163
30-89 Days Past Due | Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	372
30-89 Days Past Due | Real estate loans: | Home equity and lines of credit | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	229
30-89 Days Past Due | Real estate loans: | Home equity and lines of credit | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	44
30-89 Days Past Due | Real estate loans: | Home equity and lines of credit | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	99
30-89 Days Past Due | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	2,515
30-89 Days Past Due | Commercial and industrial loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,471
30-89 Days Past Due | Commercial and industrial loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	259
30-89 Days Past Due | Commercial and industrial loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	785
30-89 Days Past Due | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	7
30-89 Days Past Due | Other loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	7
30-89 Days Past Due | Other loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
30-89 Days Past Due | Performing (Accruing) Loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		13,982
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		13,211
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		8,792
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		6,072
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		72
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Commercial mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		2,648
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		1,152
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		282
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		870
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | One-to-four family residential mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		0
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		994
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Construction and land | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		994
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		1,893
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Multifamily | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		1,283
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Multifamily | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		0
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Multifamily | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		610
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		380
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		80
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		200
30-89 Days Past Due | Performing (Accruing) Loans | Real estate loans: | Home equity and lines of credit | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		100
30-89 Days Past Due | Performing (Accruing) Loans | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		760
30-89 Days Past Due | Performing (Accruing) Loans | Commercial and industrial loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		632
30-89 Days Past Due | Performing (Accruing) Loans | Commercial and industrial loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		61
30-89 Days Past Due | Performing (Accruing) Loans | Commercial and industrial loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		67
30-89 Days Past Due | Performing (Accruing) Loans | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		11
30-89 Days Past Due | Performing (Accruing) Loans | Other loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		11
30-89 Days Past Due | Performing (Accruing) Loans | Other loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		0
30-89 Days Past Due | Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	136	537
30-89 Days Past Due | Non-Performing Loans | Real estate loans:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	100	537
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	100	537
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Commercial mortgage | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		0
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Commercial mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	100	537
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Construction and land | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Multifamily | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Real estate loans: | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	36	0
30-89 Days Past Due | Non-Performing Loans | Commercial and industrial loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Commercial and industrial loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Commercial and industrial loans | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	36	0
30-89 Days Past Due | Non-Performing Loans | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
30-89 Days Past Due | Non-Performing Loans | Other loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	5,028
90 Days or More Past Due | Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	4,867
90 Days or More Past Due | Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	2,044
90 Days or More Past Due | Real estate loans: | Commercial mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | Commercial mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | Commercial mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	2,044
90 Days or More Past Due | Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	399
90 Days or More Past Due | Real estate loans: | One-to-four family residential mortgage | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | One-to-four family residential mortgage | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | One-to-four family residential mortgage | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	399
90 Days or More Past Due | Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,150
90 Days or More Past Due | Real estate loans: | Construction and land | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | Construction and land | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,150
90 Days or More Past Due | Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,145
90 Days or More Past Due | Real estate loans: | Multifamily | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | Multifamily | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | Multifamily | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,145
90 Days or More Past Due | Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	129
90 Days or More Past Due | Real estate loans: | Home equity and lines of credit | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | Home equity and lines of credit | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Real estate loans: | Home equity and lines of credit | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	129
90 Days or More Past Due | Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	161
90 Days or More Past Due | Commercial and industrial loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Commercial and industrial loans | Special Mention | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Commercial and industrial loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	161
90 Days or More Past Due | Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Other loans | Pass | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Other loans | Substandard | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due | Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	5,028	4,677
90 Days or More Past Due | Non-Performing Loans | Real estate loans:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	4,867	4,640
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	2,044	2,863
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Commercial mortgage | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due		0
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Commercial mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	2,044	2,863
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	399	493
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | One-to-four family residential mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	399	493
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,150
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Construction and land | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,150
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,145	1,153
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Multifamily | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	1,145	1,153
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	129	131
90 Days or More Past Due | Non-Performing Loans | Real estate loans: | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	129	131
90 Days or More Past Due | Non-Performing Loans | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	161	37
90 Days or More Past Due | Non-Performing Loans | Commercial and industrial loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due | Non-Performing Loans | Commercial and industrial loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due | Non-Performing Loans | Commercial and industrial loans | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	161	37
90 Days or More Past Due | Non-Performing Loans | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due | Non-Performing Loans | Other loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	$ 0	$ 0

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Loans - Non-Accrual Loans, Excluding PCD Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Recorded Investment	$ 8,446	$ 8,500
Unpaid Principal Balance	9,439
With No Related Allowance	4,654
Interest Income	49
Real estate loans: | Commercial mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Recorded Investment	4,961
Unpaid Principal Balance	5,471
With No Related Allowance	3,275
Interest Income	25
Real estate loans: | One-to-Four Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Recorded Investment	805
Unpaid Principal Balance	836
With No Related Allowance	228
Interest Income	6
Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Recorded Investment	1,150
Unpaid Principal Balance	1,150
With No Related Allowance	1,150
Interest Income	0
Real estate loans: | Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Recorded Investment	1,145
Unpaid Principal Balance	1,154
With No Related Allowance	0
Interest Income	14
Real estate loans: | Home equity and lines of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Recorded Investment	187
Unpaid Principal Balance	436
With No Related Allowance	0
Interest Income	2
Real estate loans: | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Recorded Investment	198
Unpaid Principal Balance	392
With No Related Allowance	1
Interest Income	$ 2

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Loans - Summary of Impaired Loans (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Recorded Investment
With No Allowance Recorded	$ 7,800
Total	13,242
Unpaid Principal Balance
Total	15,512
Related Allowance	(73)
Real estate loans:
Recorded Investment
With No Allowance Recorded	11,382
With a Related Allowance Recorded	1,844
Unpaid Principal Balance
With No Allowance Recorded	13,220
With a Related Allowance Recorded	2,276
Related Allowance	(69)
Real estate loans: | Commercial mortgage
Recorded Investment
With No Allowance Recorded	8,838
With a Related Allowance Recorded	1,812
Total	10,650
Unpaid Principal Balance
With No Allowance Recorded	10,076
With a Related Allowance Recorded	2,244
Total	12,320
Related Allowance	(66)
Real estate loans: | One-to-four family residential mortgage
Recorded Investment
With No Allowance Recorded	1,903
Total	1,903
Unpaid Principal Balance
With No Allowance Recorded	2,032
Total	2,032
Related Allowance	0
Real estate loans: | Multifamily
Recorded Investment
With No Allowance Recorded	626
Total	626
Unpaid Principal Balance
With No Allowance Recorded	1,097
Total	1,097
Related Allowance	0
Real estate loans: | Home equity and lines of credit
Recorded Investment
With No Allowance Recorded	15
With a Related Allowance Recorded	32
Total	47
Unpaid Principal Balance
With No Allowance Recorded	15
With a Related Allowance Recorded	32
Total	47
Related Allowance	(3)
Commercial and industrial loans
Recorded Investment
With a Related Allowance Recorded	16
Total	16
Unpaid Principal Balance
With a Related Allowance Recorded	16
Total	16
Related Allowance	$ (4)

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Loans - Average Recorded Investment and Interest Recognized on Impaired Loans (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Average Recorded Investment
Total	$ 20,738
Interest Income
Total	159
Real estate loans: | Commercial mortgage
Average Recorded Investment
With No Allowance Recorded	16,198
With a Related Allowance Recorded	930
Total	17,128
Interest Income
With No Allowance Recorded	112
With a Related Allowance Recorded	0
Total	112
Real estate loans: | One-to-four family residential mortgage
Average Recorded Investment
With No Allowance Recorded	2,464
Total	2,464
Interest Income
With No Allowance Recorded	33
Total	33
Real estate loans: | Multifamily
Average Recorded Investment
With No Allowance Recorded	1,036
Total	1,036
Interest Income
With No Allowance Recorded	13
Total	13
Real estate loans: | Home equity and lines of credit
Average Recorded Investment
With No Allowance Recorded	21
With a Related Allowance Recorded	33
Total	54
Interest Income
With No Allowance Recorded	0
With a Related Allowance Recorded	1
Total	1
Commercial and industrial loans
Average Recorded Investment
With No Allowance Recorded	38
With a Related Allowance Recorded	18
Total	56
Interest Income
With No Allowance Recorded	0
With a Related Allowance Recorded	0
Total	$ 0

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Loans - Narrative, Collateral-Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-dependent impaired loans	$ 9,800	$ 10,000
Real estate loans: | Commercial mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-dependent impaired loans	7,600
Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-dependent impaired loans	1,200
Real estate loans: | Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-dependent impaired loans	610
Real estate loans: | One-to-Four Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-dependent impaired loans	$ 388

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Loans - Narrative, Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) loan contract	Mar. 31, 2020 loan contract	Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of relationships (contract) | loan	0	0
Net loans held-for-investment	$ 3,889,818		$ 3,785,631
Troubled debt restructurings	$ 11,700		$ 12,100
Number of TDR loans restructured that subsequently defaulted (contract) | contract	0	27,000
COVID-19
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modification program, extension for payment deferral period	90 days
Loan modification program, payment deferral period	90 days
Non-TDR loan restructuring modifications (contracts) | loan	24
Net loans held-for-investment	$ 28,800
Deferred interest payback period, maximum	18 months
COVID-19 | Principal deferral (interest only)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-TDR loan restructuring modifications (contracts) | loan	7
Net loans held-for-investment	$ 8,800
COVID-19 | Deferrable notes
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-TDR loan restructuring modifications (contracts) | loan	17
Net loans held-for-investment	$ 20,000

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Allowance for Credit Losses on Loans (“ACL”) - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	$ 37,607	$ 43,197	$ 36,800	$ 28,707
Financing receivable, accrued interest receivable		13,200
Individually evaluated for impairment threshold		500
Individually evaluated for impairment	73	$ 77
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	10,353
PCD loan related reserves	$ 6,800

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Allowance for Credit Losses on Loans (“ACL”) - Allowance for Credit Losses for Off-Balance Sheet Credit (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	$ 808
Provision for credit losses	157
Ending balance	1,702
Cumulative Effect, Period of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	737
Cumulative Effect, Period of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	$ 1,545

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Allowance for Credit Losses on Loans (“ACL”) - Amount of Loans Receivable Held-for-Investment and Related Allowances Per Loan Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 37,607	$ 28,707
Charge-offs	(2,432)	(470)
Recoveries	43	380
Provisions (credit)	(2,374)	8,183
Ending balance	43,197	36,800
Originated Loans Net
Ending balance: individually evaluated for impairment	77		$ 73
Ending balance: collectively evaluated for impairment	43,120		37,534
Loans held-for-investment, net	3,933,015		3,823,238
Ending balance: individually evaluated for impairment	12,684		13,242
Ending balance: collectively evaluated for impairment	3,752,457
PPP loans not evaluated for impairment	167,874		126,535
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,353
Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	47,960
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	36,726	27,918
Charge-offs	(21)	(470)
Recoveries	43	380
Provisions (credit)	(2,374)	8,183
Ending balance	37,915	36,011
Originated Loans Net
Ending balance: individually evaluated for impairment	77		73
Ending balance: collectively evaluated for impairment	37,838		36,653
Loans held-for-investment, net	3,914,970		3,804,720
Ending balance: individually evaluated for impairment	12,684		13,242
Ending balance: collectively evaluated for impairment	3,734,412
PPP loans not evaluated for impairment	167,874		126,535
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,541
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	40,267
PCD/PCI loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	881	789
Charge-offs	(2,411)	0
Recoveries	0	0
Provisions (credit)	0	0
Ending balance	5,282	789
Originated Loans Net
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	5,282		881
Loans held-for-investment, net	18,045		18,518
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	18,045		18,518
PPP loans not evaluated for impairment	0		0
PCD/PCI loans | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,812
PCD/PCI loans | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	7,693
Real estate loans: | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Originated Loans Net
Loans held-for-investment, net	3,678,794		3,610,210
Real estate loans: | Commercial and multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	33,005
Charge-offs	(21)
Recoveries	19
Provisions (credit)	(2,172)
Ending balance	28,882
Originated Loans Net
Ending balance: individually evaluated for impairment	69
Ending balance: collectively evaluated for impairment	28,813
Loans held-for-investment, net	3,305,522
Ending balance: individually evaluated for impairment	9,839
Ending balance: collectively evaluated for impairment	3,295,683
PPP loans not evaluated for impairment	0
Real estate loans: | Commercial and multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	(1,949)
Real estate loans: | Commercial and multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	31,056
Real estate loans: | Commercial mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		4,891
Charge-offs		(433)
Recoveries		375
Provisions (credit)		611
Ending balance		5,444
Originated Loans Net
Ending balance: individually evaluated for impairment			66
Ending balance: collectively evaluated for impairment			5,944
Loans held-for-investment, net	734,113		717,566
Ending balance: individually evaluated for impairment			10,650
Ending balance: collectively evaluated for impairment			706,916
PPP loans not evaluated for impairment			0
Real estate loans: | Multifamily | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		20,203
Charge-offs		0
Recoveries		0
Provisions (credit)		6,686
Ending balance		26,889
Originated Loans Net
Ending balance: individually evaluated for impairment			0
Ending balance: collectively evaluated for impairment			26,995
Loans held-for-investment, net	2,571,409		2,512,934
Ending balance: individually evaluated for impairment			626
Ending balance: collectively evaluated for impairment			2,512,308
PPP loans not evaluated for impairment			0
Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	207	180
Charge-offs	0	0
Recoveries	1	1
Provisions (credit)	(269)	131
Ending balance	5,172	312
Originated Loans Net
Ending balance: individually evaluated for impairment	4		0
Ending balance: collectively evaluated for impairment	5,168		207
Loans held-for-investment, net	202,948		212,222
Ending balance: individually evaluated for impairment	1,634		1,903
Ending balance: collectively evaluated for impairment	201,314		210,319
PPP loans not evaluated for impairment	0		0
Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,233
Real estate loans: | One-to-four family residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,440
Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,214	536
Charge-offs	0	0
Recoveries	0	0
Provisions (credit)	(24)	135
Ending balance	269	671
Originated Loans Net
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	269		1,214
Loans held-for-investment, net	77,206		74,351
Ending balance: individually evaluated for impairment	1,150		0
Ending balance: collectively evaluated for impairment	76,056		74,351
PPP loans not evaluated for impairment	0		0
Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	(921)
Real estate loans: | Construction and land | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	293
Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	260	317
Charge-offs	0	0
Recoveries	0	1
Provisions (credit)	(36)	256
Ending balance	643	574
Originated Loans Net
Ending balance: individually evaluated for impairment	2		3
Ending balance: collectively evaluated for impairment	641		257
Loans held-for-investment, net	93,118		93,137
Ending balance: individually evaluated for impairment	45		47
Ending balance: collectively evaluated for impairment	93,073		93,090
PPP loans not evaluated for impairment	0		0
Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	419
Real estate loans: | Home equity and lines of credit | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	679
Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,842	1,640
Charge-offs	0	(37)
Recoveries	21	2
Provisions (credit)	130	430
Ending balance	2,940	2,035
Originated Loans Net
Ending balance: individually evaluated for impairment	2		4
Ending balance: collectively evaluated for impairment	2,938		1,838
Loans held-for-investment, net	234,518		191,481
Ending balance: individually evaluated for impairment	16
Ending balance: collectively evaluated for impairment	66,628
PPP loans not evaluated for impairment	167,874		126,535
Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	947
Commercial and industrial loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,789
Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	198	151
Charge-offs	0	0
Recoveries	2	1
Provisions (credit)	(3)	(66)
Ending balance	9	$ 86
Originated Loans Net
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	9		198
Loans held-for-investment, net	1,658		3,029
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	1,658		3,029
PPP loans not evaluated for impairment	0		$ 0
Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	(188)
Other loans | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 10

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Deposits - Deposit Account Balances (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Deposits [Abstract]
Non-interest-bearing checking	$ 771,432	$ 695,831
NOW and interest-bearing checking	918,367	905,208
Savings and money market	1,815,727	1,953,885
Certificates of deposit	630,190	521,627
Total deposits	$ 4,135,716	$ 4,076,551

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Deposits - Interest Expense On Deposits (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Deposits [Abstract]
NOW and interest-bearing checking, savings, and money market	$ 932	$ 4,073
Certificates of deposit	938	5,206
Total interest expense on deposit accounts	$ 1,870	$ 9,279

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Equity Incentive Plans - Stock Options Outstanding (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Number of Stock Options
Beginning Balance (shares)	2,214,193
Forfeited (shares)	(41,090)
Exercised (shares)	(54,990)
Ending Balance (shares)	2,118,113	2,214,193
Exercisable (shares)	2,101,034
Weighted Average Grant Date Fair Value
Beginning Balance (usd per share)	$ 4.01
Forfeited (usd per share)	3.96
Exercised (usd per share)	4.06
Ending Balance (usd per share)	4.01	$ 4.01
Exercisable (usd per share)	4.00
Weighted Average Exercise Price
Beginning Balance (usd per share)	13.94
Forfeited (usd per share)	13.62
Exercised (usd per share)	14.69
Ending Balance (usd per share)	13.92	$ 13.94
Exercisable (usd per share)	$ 13.91
Weighted Average Contractual Life (years)
Outstanding	3 years 8 months 15 days	3 years 11 months 15 days
Exercisable	3 years 8 months 12 days

XML

Equity Incentive Plans - Narrative (Details) - USD ($)		3 Months Ended
	Jan. 29, 2021	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)		176,930
Allocated share-based compensation expense		$ 243,000	$ 448,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected future stock-based compensation expense		$ 25,000
Average period of expected future stock option expense		7 months 6 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected future stock-based compensation expense		$ 2,600,000
Average period of expected future stock option expense		3 years 3 months 18 days
Two Thousand Nineteen Equity Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	147,315
Grant date value	$ 1,800,000
Two Thousand Nineteen Equity Incentive Plan | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	29,615
Grant date value	$ 366,041
Award vesting period	3 years
Vesting Period One | Two Thousand Nineteen Equity Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	32,769
Award vesting period	1 year
Vesting Period Two | Two Thousand Nineteen Equity Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	114,546
Award vesting period	5 years
Period after grant date to begin vesting period	1 year
Minimum | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares issuable based on threshold performance	0.00%
Maximum | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares issuable based on threshold performance	225.00%

XML

Equity Incentive Plans - Status of the Company's Restricted Share Awards (Details)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Number of Shares Awarded
Beginning Balance (shares) | shares	104,010
Granted (shares) | shares	176,930
Vested (shares) | shares	(38,470)
Forfeited (shares) | shares	(4,022)
Ending Balance (shares) | shares	238,448
Weighted Average Grant Date Fair Value
Beginning Balance (in dollars per share) | $ / shares	$ 15.91
Granted (in dollars per share) | $ / shares	12.59
Vested (in dollars per share) | $ / shares	15.81
Forfeited (in dollars per share) | $ / shares	15.81
Ending Balance (in dollars per share) | $ / shares	$ 13.46

XML

Fair Value Measurements - Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	$ 1,207,238	$ 1,264,805
Trading securities	12,142	12,291
Individually evaluated loans	4,466	5,325
Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	1,207,238	1,264,805
Trading securities	12,142	12,291
Equity securities	473	253
Total	1,219,853	1,277,349
Measured on a recurring basis | U.S. Government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	2,690	3,158
Measured on a recurring basis | Mortgage-backed securities:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	1,079,256	1,172,312
Measured on a recurring basis | Pass-through certificates, GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	253,563	281,343
Measured on a recurring basis | REMICs, GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	825,693	890,965
Measured on a recurring basis | Non-GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale		4
Measured on a recurring basis | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	103	123
Measured on a recurring basis | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	124,442	88,418
Measured on a recurring basis | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	747	794
Measured on a recurring basis | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	125,292	89,335
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Trading securities	12,142	12,291
Equity securities	473	253
Total	12,615	12,544
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pass-through certificates, GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | REMICs, GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale		0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	1,207,238	1,264,805
Trading securities	0	0
Equity securities	0	0
Total	1,207,238	1,264,805
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	2,690	3,158
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	1,079,256	1,172,312
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Pass-through certificates, GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	253,563	281,343
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | REMICs, GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	825,693	890,965
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Non-GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale		4
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	103	123
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	124,442	88,418
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	747	794
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	125,292	89,335
Measured on a recurring basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Trading securities	0	0
Equity securities	0	0
Total	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | U.S. Government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Pass-through certificates, GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | REMICs, GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Non-GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale		0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale	0	0
Measured on a non-recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	4,566	5,325
Measured on a non-recurring basis | Real estate loans:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	4,452	5,312
Measured on a non-recurring basis | Real estate loans: | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	3,871	5,268
Measured on a non-recurring basis | Real estate loans: | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	12	16
Measured on a non-recurring basis | Real estate loans: | Home equity and lines of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	29	28
Measured on a non-recurring basis | Real estate loans: | One-to-Four Family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	540
Measured on a non-recurring basis | Commercial and industrial loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	14	13
Measured on a non-recurring basis | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	100
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate loans:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate loans: | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate loans: | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate loans: | Home equity and lines of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate loans: | One-to-Four Family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial and industrial loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real estate loans:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real estate loans: | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real estate loans: | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real estate loans: | Home equity and lines of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real estate loans: | One-to-Four Family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Commercial and industrial loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	0
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	4,566	5,325
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real estate loans:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	4,452	5,312
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real estate loans: | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	3,871	5,268
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real estate loans: | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	12	16
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real estate loans: | Home equity and lines of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	29	28
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real estate loans: | One-to-Four Family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	540
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Commercial and industrial loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	14	$ 13
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated loans	$ 100

XML

Fair Value Measurements - Qualitative Information for Level 3 Assets Measured at Fair Value on a Non-Recurring Basis (Details) $ in Thousands	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans	$ 4,466	$ 5,325
Other real estate owned	$ 100	$ 0
Appraisals | Discount for costs to sell
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable	0.070	0.070
Other real estate owned inputs	0.070
Appraisals | Discount for quick sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable	0.100	0.100
Discounted cash flows | Interest rates | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable	0.0488	0.0488
Discounted cash flows | Interest rates | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable	0.0625	0.0625

XML

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Impaired loans held-for-investment and held-for-sale with outstanding principal balances	$ 6,500		$ 7,400
Estimated fair value of impaired loans held-for-investment and held-for-sale	4,500		$ 5,300
Increase (decrease) in net impairment charges	3	$ (79)
Net recoveries (charge offs)	2,400	90
Assets acquired through foreclosure	$ 100	$ 0

XML

Fair Value Measurements - Estimated Fair Values of the Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial assets:
Trading securities	$ 12,142	$ 12,291
Debt securities available-for-sale	1,207,238	1,264,805
Debt securities held-to-maturity	7,241	7,574
Loans held-for-sale		19,895
Carrying Value
Financial assets:
Cash and cash equivalents	127,570	87,544
Trading securities	12,142	12,291
Debt securities available-for-sale	1,207,238	1,264,805
Debt securities held-to-maturity	6,913	7,234
Equity securities	473	253
FHLBNY stock, at cost	28,641	28,641
Loans held-for-sale		19,895
Net loans held-for-investment	3,889,818	3,785,631
Derivative assets	1,219	1,498
Financial liabilities:
Deposits	4,135,716	4,076,551
Borrowed funds	592,170	591,789
Advance payments by borrowers for taxes and insurance	24,027	19,677
Derivative liabilities	1,220	1,502
Estimated Fair Value
Financial assets:
Cash and cash equivalents	127,570	87,544
Trading securities	12,142	12,291
Debt securities available-for-sale	1,207,238	1,264,805
Debt securities held-to-maturity	7,241	7,574
Equity securities	473	253
FHLBNY stock, at cost	28,641	28,641
Net loans held-for-investment	3,959,088	3,842,054
Derivative assets	1,219	1,498
Financial liabilities:
Deposits	4,140,621	4,082,538
Borrowed funds	604,460	609,900
Advance payments by borrowers for taxes and insurance	24,027	19,677
Derivative liabilities	1,220	1,502
Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	127,570	87,544
Trading securities	12,142	12,291
Debt securities available-for-sale	0	0
Debt securities held-to-maturity	0	0
Equity securities	473	253
FHLBNY stock, at cost	0	0
Loans held-for-sale		0
Net loans held-for-investment	0	0
Derivative assets	0	0
Financial liabilities:
Deposits	0	0
Borrowed funds	0	0
Advance payments by borrowers for taxes and insurance	0	0
Derivative liabilities	0	0
Estimated Fair Value | Significant Other Observable Inputs (Level 2)
Financial assets:
Cash and cash equivalents	0	0
Trading securities	0	0
Debt securities available-for-sale	1,207,238	1,264,805
Debt securities held-to-maturity	7,241	7,574
Equity securities	0	0
FHLBNY stock, at cost	28,641	28,641
Loans held-for-sale		0
Net loans held-for-investment	0	0
Derivative assets	1,219	1,498
Financial liabilities:
Deposits	4,140,621	4,082,538
Borrowed funds	604,460	609,900
Advance payments by borrowers for taxes and insurance	24,027	19,677
Derivative liabilities	1,220	1,502
Estimated Fair Value | Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	0	0
Trading securities	0	0
Debt securities available-for-sale	0	0
Debt securities held-to-maturity	0	0
Equity securities	0	0
FHLBNY stock, at cost	0	0
Loans held-for-sale		19,895
Net loans held-for-investment	3,959,088	3,842,054
Derivative assets	0	0
Financial liabilities:
Deposits	0	0
Borrowed funds	0	0
Advance payments by borrowers for taxes and insurance	0	0
Derivative liabilities	$ 0	$ 0

XML

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income available to common stockholders	$ 18,677	$ 4,551
Weighted average shares outstanding-basic (shares)	49,528,419	46,791,768
Effect of non-vested restricted stock and stock options outstanding (shares)	105,225	191,698
Weighted average shares outstanding-diluted (shares)	49,633,644	46,983,466
Earnings per share-basic (usd per share)	$ 0.38	$ 0.10
Earnings per share-diluted (usd per share)	$ 0.38	$ 0.10
Anti-dilutive shares (shares)	1,002,377	1,001,828

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Leases - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 35,662	$ 36,741
Operating lease liabilities	$ 42,067	$ 42,734
Minimum
Lessee, Lease, Description [Line Items]
Renewal term	5 years
Maximum
Lessee, Lease, Description [Line Items]
Term of lease	34 years 3 months 18 days
Renewal term	10 years

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Leases - Supplemental Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease cost	$ 1,455	$ 1,439
Variable lease cost	1,235	544
Net lease cost	2,690	1,983
Cash paid for amounts included in measurement of operating lease liabilities	1,708	1,545
Right-of-use assets obtained in exchange for new lease liabilities	$ 0	$ 3,028
Weighted average remaining lease term	12 years 3 months 3 days	12 years 8 months 15 days
Weighted average discount rate	3.60%	3.59%

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Leases - Lease Payments Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
2021	$ 4,669
2022	5,550
2023	5,504
2024	5,067
2025	4,710
Thereafter	28,196
Total lease payments	53,696
Less: imputed interest	11,629
Present value of lease liabilities	$ 42,067	$ 42,734

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Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total fees and service charges for customer services	$ 1,197	$ 1,120
Income on bank-owned life insurance	848	876
Gains (losses) on available-for-sale debt securities, net	97	(13)
Gains (losses) on trading securities, net	364	(1,992)
Swap income	0	76
Other	130	41
Total non-interest income	2,636	108
Service charges
Disaggregation of Revenue [Line Items]
Total fees and service charges for customer services	720	753
ATM and card interchange fees
Disaggregation of Revenue [Line Items]
Total fees and service charges for customer services	399	304
Investment fees
Disaggregation of Revenue [Line Items]
Total fees and service charges for customer services	$ 78	$ 63

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Derivatives - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) instrument	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) instrument
Derivative [Line Items]
Swap income	$ 0	$ 76
Interest Rate Swap
Derivative [Line Items]
Number of derivative instruments held | instrument	7		7
Derivative, notional amount	$ 38,900		$ 39,200

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Derivatives - Fair Value of Derivatives (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other assets
Derivative [Line Items]
Fair value of derivative asset	$ 1,219	$ 1,498
Other liabilities
Derivative [Line Items]
Fair value of derivative liability	$ 1,220	$ 1,502

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Recent Accounting Pronouncements Adopted (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	$ 37,607	$ 43,197	$ 36,800	$ 28,707
Unfounded credit commitment	808	$ 1,702
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase in allowance for credit losses	11,100
Allowance for credit loss	10,353
Unfounded credit commitment	737
PCD loan related reserves	6,800
Non-PCD loan related reserves	$ 4,300