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, 2023

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

For the transition period from                           to                          

Commission file number: 001-37700

NICOLET BANKSHARES, INC.

(Exact Name of Registrant as Specified in its Charter)

Wisconsin				47-0871001
(State or Other Jurisdiction of Incorporation or Organization)				(I.R.S. Employer Identification No.)
111 North Washington Street
	Green Bay,	Wisconsin		54301
(Address of Principal Executive Offices)				(Zip Code)
(920)			430-1400
(Registrant’s Telephone Number, Including Area Code)
N/A (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(s)	Name of each exchange on which registered
Common Stock, par value $0.01 per share	NIC	New York Stock Exchange

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, 2023 there were 14,716,616 shares of $0.01 par value common stock outstanding.

Nicolet Bankshares, Inc.

Quarterly Report on Form 10-Q

March 31, 2023

TABLE OF CONTENTS

			PAGE
PART I	FINANCIAL INFORMATION
	Item 1.	Financial Statements:
		Consolidated Balance Sheets	3
		Consolidated Statements of Income (Loss)	4
		Consolidated Statements of Comprehensive Income (Loss)	5
		Consolidated Statements of Stockholders’ Equity	6
		Consolidated Statements of Cash Flows	7
		Notes to Unaudited Consolidated Financial Statements	8
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	30
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	47
	Item 4.	Controls and Procedures	47
PART II	OTHER INFORMATION
	Item 1.	Legal Proceedings	49
	Item 1A.	Risk Factors	49
	Item 2.	Unregistered Sales of Equity Securities and Use of  Proceeds	49
	Item 3.	Defaults Upon Senior Securities	49
	Item 4.	Mine Safety Disclosures	49
	Item 5.	Other Information	49
	Item 6.	Exhibits	50
		Signatures	51

2

PART I – FINANCIAL INFORMATION

Item 1. FINANCIAL STATEMENTS:

NICOLET BANKSHARES, INC.

Consolidated Balance Sheets

(In thousands, except share and per share data)

	March 31, 2023		December 31, 2022
	(Unaudited)		(Audited)
Assets
Cash and due from banks	$	93,462	$	121,211
Interest-earning deposits	20,718		33,512
Cash and cash equivalents	114,180		154,723
Certificates of deposit in other banks	11,293		12,518
Securities available for sale (“AFS”), at fair value	1,023,176		917,618
Securities held to maturity (“HTM”), at amortized cost	—		679,128
Other investments	57,482		65,286
Loans held for sale	4,962		1,482
Loans	6,223,732		6,180,499
Allowance for credit losses - loans (“ACL-Loans”)	(62,412)		(61,829)
Loans, net	6,161,320		6,118,670
Premises and equipment, net	112,569		108,956
Bank owned life insurance (“BOLI”)	166,107		165,137
Goodwill and other intangibles, net	400,277		402,438
Accrued interest receivable and other assets	140,988		138,013
Total assets	$	8,192,354	$	8,763,969
Liabilities and Stockholders’ Equity
Liabilities:
Noninterest-bearing demand deposits	$	2,094,623	$	2,361,816
Interest-bearing deposits	4,833,956		4,817,105
Total deposits	6,928,579		7,178,921
Short-term borrowings	50,000		317,000
Long-term borrowings	197,448		225,342
Accrued interest payable and other liabilities	54,535		70,177
Total liabilities	7,230,562		7,791,440
Stockholders’ Equity:
Common stock	147		147
Additional paid-in capital	623,746		621,988
Retained earnings	398,966		407,864
Accumulated other comprehensive income (loss)	(61,067)		(57,470)
Total stockholders’ equity	961,792		972,529
Total liabilities and stockholders’ equity	$	8,192,354	$	8,763,969
Preferred shares authorized (no par value)	10,000,000		10,000,000
Preferred shares issued and outstanding	—		—
Common shares authorized (par value $0.01 per share)	30,000,000		30,000,000
Common shares outstanding	14,698,265		14,690,614
Common shares issued	14,771,255		14,764,104

See accompanying notes to unaudited consolidated financial statements.

3

ITEM 1. Financial Statements Continued:

NICOLET BANKSHARES, INC.

Consolidated Statements of Income (Loss)

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

	Three Months Ended March 31,
	2023		2022
Interest income:
Loans, including loan fees	$	79,142	$	51,299
Investment securities:
Taxable	4,961		5,127
Tax-exempt	1,737		675
Other interest income	1,536		817
Total interest income	87,376		57,918
Interest expense:
Deposits	24,937		2,192
Short-term borrowings	3,212		—
Long-term borrowings	2,506		1,931
Total interest expense	30,655		4,123
Net interest income	56,721		53,795
Provision for credit losses	3,090		300
Net interest income after provision for credit losses	53,631		53,495
Noninterest income:
Wealth management fee income	5,512		5,699
Mortgage income, net	1,466		3,253
Service charges on deposit accounts	1,480		1,477
Card interchange income	3,033		2,581
BOLI income	1,200		933
Deferred compensation plan asset market valuations	946		(467)
LSR income, net	1,155		(382)
Asset gains (losses), net	(38,468)		1,313
Other income	1,832		1,536
Total noninterest income	(21,844)		15,943
Noninterest expense:
Personnel	24,328		21,191
Occupancy, equipment and office	8,783		6,944
Business development and marketing	2,121		1,831
Data processing	3,988		3,387
Intangibles amortization	2,161		1,424
FDIC assessments	540		480
Merger-related expense	163		98
Other expense	2,791		2,195
Total noninterest expense	44,875		37,550
Income (loss) before income tax expense	(13,088)		31,888
Income tax expense (benefit)	(4,190)		7,724
Net income (loss)	$	(8,898)	$	24,164
Earnings (loss) per common share:
Basic	$	(0.61)	$	1.77
Diluted	$	(0.61)	$	1.70
Weighted average common shares outstanding:
Basic	14,694,451		13,648,745
Diluted	14,694,451		14,214,752

See accompanying notes to unaudited consolidated financial statements.

4

ITEM 1. Financial Statements Continued:

NICOLET BANKSHARES, INC.

Consolidated Statements of Comprehensive Income (Loss)

(In thousands) (Unaudited)

	Three Months Ended March 31,
	2023		2022
Net income (loss)	$	(8,898)	$	24,164
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on securities AFS:
Net unrealized holding gains (losses)	15,294		(39,948)
Net realized (gains) losses included in income	213		(15)
Reclassification adjustment for securities transferred from    held to maturity to available for sale	(20,434)		—
Income tax (expense) benefit	1,330		10,790
Total other comprehensive income (loss)	(3,597)		(29,173)
Comprehensive income (loss)	$	(12,495)	$	(5,009)

See accompanying notes to unaudited consolidated financial statements.

5

ITEM 1. Financial Statements Continued:

NICOLET BANKSHARES, INC.

Consolidated Statements of Stockholders’ Equity

(In thousands) (Unaudited)

	Common Stock		Additional Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Total
Balances at December 31, 2022	$	147	$	621,988	$	407,864	$	(57,470)	$	972,529
Comprehensive income:
Net income (loss), three months ended March 31, 2023	—		—		(8,898)		—		(8,898)
Other comprehensive income (loss)	—		—		—		(3,597)		(3,597)
Stock-based compensation expense	—		1,424		—		—		1,424
Exercise of stock options, net	—		148		—		—		148
Issuance of common stock	—		186		—		—		186
Balances at March 31, 2023	$	147	$	623,746	$	398,966	$	(61,067)	$	961,792
Balances at December 31, 2021	$	140	$	575,045	$	313,604	$	3,102	$	891,891
Comprehensive income:
Net income, three months ended March 31, 2022	—		—		24,164		—		24,164
Other comprehensive income (loss)	—		—		—		(29,173)		(29,173)
Stock-based compensation expense	—		1,799		—		—		1,799
Exercise of stock options, net	1		1,886		—		—		1,887
Issuance of common stock	—		175		—		—		175
Purchase and retirement of common stock	(6)		(54,427)		—		—		(54,433)
Balances at March 31, 2022	$	135	$	524,478	$	337,768	$	(26,071)	$	836,310

See accompanying notes to unaudited consolidated financial statements.

6

ITEM 1. Financial Statements Continued:

NICOLET BANKSHARES, INC.

Consolidated Statements of Cash Flows (Unaudited)

(In thousands)	Three Months Ended March 31,
	2023		2022
Cash Flows From Operating Activities:
Net income (loss)	$	(8,898)	$	24,164
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation, amortization, and accretion	4,197		6,769
Provision for credit losses	3,090		300
Increase in cash surrender value of life insurance	(1,087)		(933)
Stock-based compensation expense	1,424		1,799
Asset (gains) losses, net	38,468		(1,313)
Gain on sale of loans held for sale, net	(612)		(2,377)
Net change due to:
Proceeds from sale of loans held for sale	17,789		86,478
Origination of loans held for sale	(20,861)		(88,304)
Accrued interest receivable and other assets	(2,326)		6,786
Accrued interest payable and other liabilities	(15,642)		(11,426)
Net cash provided by (used in) operating activities	15,542		21,943
Cash Flows From Investing Activities:
Net (increase) decrease in loans	(41,764)		(64,669)
Net (increase) decrease in certificates of deposit in other banks	1,225		2,228
Purchases of securities AFS	—		(5,017)
Purchases of securities HTM	—		(38,856)
Proceeds from sales of securities AFS	22,565		3,400
Proceeds from sales of securities HTM	460,051		—
Proceeds from calls and maturities of securities AFS	42,028		29,511
Proceeds from calls and maturities of securities HTM	2,916		5,430
Purchases of other investments	(3,801)		(10,953)
Proceeds from sales of other investments	11,108		775
Proceeds from redemption of BOLI	117		117
Net (increase) decrease in premises and equipment	(5,646)		(1,953)
Net (increase) decrease in other real estate and other assets	—		3,075
Net cash (paid) received in branch sale	—		147,833
Net cash provided by (used in) investing activities	488,799		70,921
Cash Flows From Financing Activities:
Net increase (decrease) in deposits	(250,218)		(229,862)
Net increase (decrease) in short-term borrowings	(267,000)		—
Repayments of long-term borrowings	(28,000)		(10,000)
Purchase and retirement of common stock	—		(54,433)
Proceeds from issuance of common stock	186		175
Proceeds from exercise of stock options	148		1,887
Net cash provided by (used in) financing activities	(544,884)		(292,233)
Net increase (decrease) in cash and cash equivalents	(40,543)		(199,369)
Cash and cash equivalents:
Beginning	154,723		595,292
Ending *	$	114,180	$	395,923
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	$	30,825	$	5,170
Cash paid for taxes	—		—
Transfer of securities from HTM to AFS	177,727		—
Transfer of loans and bank premises to other real estate owned	—		432
Capitalized mortgage servicing rights	204		886

* There was no restricted cash in cash and cash equivalents at March 31, 2023, while cash and cash equivalents at March 31, 2022, included restricted cash of $1.9 million pledged as collateral on interest rate swaps. No reserve balance was required with the Federal Reserve Bank at either March 31, 2023 or March 31, 2022.

See accompanying notes to unaudited consolidated financial statements.

7

NICOLET BANKSHARES, INC.

Notes to Unaudited Consolidated Financial Statements

Note 1 – Basis of Presentation

General

In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the consolidated balance sheets, statements of income (loss), comprehensive income (loss), changes in stockholders’ equity, and cash flows of Nicolet Bankshares, Inc. (the “Company” or “Nicolet”) and its subsidiaries, as of and for the periods presented, and all such adjustments are of a normal recurring nature. All material intercompany transactions and balances have been eliminated. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the entire year.

These interim consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission and, therefore, certain information and footnote disclosures normally presented in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) have been omitted or abbreviated. These consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and footnotes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

Critical Accounting Policies and Estimates

Preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions, and judgments that affect the amounts reported in the consolidated financial statements and accompanying disclosures. Estimates are used in accounting for, among other items, the allowance for credit losses, valuation of loans in acquisition transactions, useful lives for depreciation and amortization, fair value of financial instruments, impairment calculations, valuation of deferred tax assets, uncertain income tax positions and contingencies. These estimates are based on management’s knowledge of historical experience, current information, and other factors deemed to be relevant; accordingly, as this information changes, actual results could differ from those estimates. Factors that may cause sensitivity to the aforementioned estimates include but are not limited to: external market factors such as market interest rates and employment rates, changes to operating policies and procedures, changes in applicable banking or tax regulations, and changes to deferred tax estimates. Nicolet considers accounting estimates to be critical to reported financial results if the accounting estimate requires management to make assumptions about matters that are highly uncertain and different estimates that are reasonably likely to occur from period to period, could have a material impact on the financial statements. The accounting estimates we consider to be critical include business combinations and the valuation of loans acquired, the determination of the allowance for credit losses, and income taxes.

There have been no material changes or developments with respect to the assumptions or methodologies that the Company uses when applying critical accounting policies and developing critical accounting estimates as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

Recent Accounting Pronouncements Adopted

In March 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings (“TDRs”) and Vintage Disclosures. This ASU eliminated the accounting guidance for TDRs by creditors and enhanced the disclosure requirements for loan modifications to borrowers experiencing financial difficulty. The ASU also requires public business entities to expand the vintage disclosures to include gross charge-offs by year of origination. The updated guidance is effective for fiscal years beginning after December 15, 2022. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements; however, it resulted in new disclosures. See Note 6 for the new disclosures.

Future Accounting Pronouncements

In March 2023, the FASB issued ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. This ASU permits reporting entities to elect to account for tax equity investments, regardless of the tax credit program for which the income tax credits are received, using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the income tax credits and other income tax benefits received and recognizes the net amortization and income tax credits and other income tax benefits in the income statement as a component of income tax expense. A reporting entity makes an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. This ASU also requires specific disclosures of investments that generate income tax credits and other income tax benefits from a tax credit program for which the entity has elected to apply the proportional amortization method. The updated guidance is effective for fiscal years beginning after December 15, 2023.

8

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. It provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. In December 2022, the FASB issued ASU 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848, which defers the sunset date of the original guidance from December 31, 2022 to December 31, 2024. The Company continues to work through the cessation of LIBOR, including the modification of its loans and other financial instruments with attributes that are either directly or indirectly influenced by LIBOR. The Company expects to utilize the reference rate reform transition guidance, as applicable, and does not expect such adoption to have a material impact on its consolidated financial statements or financial disclosures. The Company will continue to assess the impact as the reference rate transition approaches June 30, 2023.

Reclassifications

Certain amounts in the 2022 consolidated financial statements have been reclassified to conform to the 2023 presentation. These reclassifications were not material and did not impact previously reported net income or comprehensive income.

Note 2 – Acquisition

Charter Bankshares, Inc. (“Charter”): On August 26, 2022, Nicolet completed its merger with Charter, pursuant to the Agreement and Plan of Merger dated March 29, 2022, at which time Charter merged with and into Nicolet, and Charter Bank, the wholly owned bank subsidiary of Charter, was merged with and into Nicolet National Bank (the “Bank”), the wholly owned bank subsidiary of Nicolet. In the merger, Charter stockholders received 15.458 shares of Nicolet common stock and $475 in cash for each share of Charter owned. As a result, Nicolet issued approximately 1.26 million shares of Nicolet common stock for stock consideration of $98 million and cash consideration of $39 million, for a total purchase price of $137 million. With the Charter merger, Nicolet expanded to Western Wisconsin and Minnesota.

A summary of the assets acquired and liabilities assumed in the Charter transaction, as of the acquisition date, including the purchase price allocation was as follows.

(In millions, except share data)	Acquired from Charter		Fair Value Adjustments		Estimated Fair Value
Assets Acquired:
Cash and cash equivalents	$	10	$	—	$	10
Investment securities	218		—		218
Loans	848		(21)		827
ACL-Loans	(9)		7		(2)
Premises and equipment	9		1		10
BOLI	29		—		29
Core deposit intangible	—		19		19
Other assets	5		5		10
Total assets	$	1,110	$	11	$	1,121
Liabilities Assumed:
Deposits	$	869	$	1	$	870
Borrowings	161		—		161
Other liabilities	3		—		3
Total liabilities	$	1,033	$	1	$	1,034
Net assets acquired					$	87
Purchase Price:
Nicolet common stock issued (in shares)					1,262,360
Value of Nicolet common stock consideration					$	98
Cash consideration paid					39
Total purchase price					$	137
Preliminary goodwill					$	50

The Company purchased loans through the acquisition of Charter for which there was, at the date of acquisition, more than insignificant deterioration of credit quality since origination (purchased credit deteriorated loans or “PCD” loans). The carrying amount of these loans at acquisition was as follows.

9

(In thousands)	August 26, 2022
Purchase price of PCD loans at acquisition	$	24,031
Allowance for credit losses on PCD loans at acquisition	1,709
Par value of PCD acquired loans at acquisition	$	25,740

The Company accounted for the Charter acquisition under the acquisition method of accounting, and thus, the financial position and results of operations of Charter prior to the consummation date were not included in the accompanying consolidated financial statements. The accounting required assets purchased and liabilities assumed to be recorded at their respective estimated fair values at the date of acquisition. The estimated fair value was determined with the assistance of third party valuations, appraisals, and third party advisors. Goodwill arising as a result of the Charter acquisition is not deductible for tax purposes. Due to the timing of the merger, the purchase price allocation and estimated fair value measurements remain preliminary. Management will continue to review the estimated fair values and expects to finalize its analysis of the acquired assets and assumed liabilities in the transaction over the next few months, within one year of the merger. Therefore, adjustments to the purchase price allocation and estimated fair value may occur.

Note 3 – Earnings per Common Share

Basic earnings per common share are calculated by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings per common share are calculated by dividing net income (loss) by the weighted average number of shares adjusted for the dilutive effect of common stock awards (outstanding stock options and unvested restricted stock), if any. Presented below are the calculations for basic and diluted earnings per common share.

	Three Months Ended March 31,
(In thousands, except per share data)	2023		2022
Net income (loss)	$	(8,898)	$	24,164
Weighted average common shares outstanding	14,694		13,649
Effect of dilutive common stock awards	—		566
Diluted weighted average common shares outstanding	14,694		14,215
Basic earnings (loss) per common share*	$	(0.61)	$	1.77
Diluted earnings (loss) per common share*	$	(0.61)	$	1.70

*Cumulative quarterly per share performance may not equal annual per share totals due to the effects of the amount and timing of capital increases. When computing earnings per share for an interim period, the denominator is based on the weighted average shares outstanding during the interim period, and not on an annualized weighted average basis. Accordingly, the sum of the earnings per share data for the quarters will not necessarily equal the year to date earnings per share data.

As a result of the Company’s reported net loss for the three months ended March 31, 2023, all of the common stock awards outstanding were excluded from the computation of diluted earnings (loss) per common shares. For the three months ended March 31, 2022, options to purchase approximately 0.1 million shares were excluded from the calculation of diluted earnings per common share as the effect of their exercise would have been anti-dilutive.

Note 4 – Stock-Based Compensation

The Company may grant stock options and restricted stock under its stock-based compensation plans to certain officers, employees and directors. These plans are administered by a committee of the Board of Directors, and at March 31, 2023, approximately 0.7 million shares were available for grant under these stock-based compensation plans.

A Black-Scholes model is utilized to estimate the fair value of stock option grants, while the market price of the Company’s stock at the date of grant is used to estimate the fair value of restricted stock awards. The weighted average assumptions used in the Black-Scholes model for valuing stock option grants for the three months ended March 31, 2022 were as follows. There were no stock options granted for the three months ended March 31, 2023.

	Three Months Ended March 31, 2022
Dividend yield	—		%
Expected volatility	30		%
Risk-free interest rate	1.77		%
Expected average life	7 years
Weighted average per share fair value of options	$	32.99

10

A summary of the Company’s stock option activity is summarized below.

Stock Options	Option Shares Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Life (Years)	Aggregate Intrinsic Value (in thousands)
Outstanding - December 31, 2022	1,853,064	$	59.79
Granted	—	—
Exercise of stock options *	(5,329)	34.82
Outstanding - March 31, 2023	1,847,735	$	59.86	5.7	$	16,359
Exercisable - March 31, 2023	1,278,592	$	52.22	4.6	$	16,302

* The terms of the stock option agreements permit having a number of shares of stock withheld, the fair market value of which as of the date of exercise is sufficient to satisfy the exercise price and/or tax withholding requirements. For the three months ended March 31, 2023, 492 such shares were withheld by the Company.

Intrinsic value represents the amount by which the fair market value of the underlying stock exceeds the exercise price of the stock options. The intrinsic value of options exercised for the three months ended March 31, 2023 and 2022 was approximately $0.2 million and $3.0 million, respectively.

A summary of the Company’s restricted stock activity is summarized below.

Restricted Stock	Weighted Average Grant Date Fair Value		Restricted Shares Outstanding
Outstanding - December 31, 2022	$	76.49	73,490
Granted	—		—
Vested	72.00		(500)
Outstanding - March 31, 2023	$	76.52	72,990

The Company recognized approximately $1.4 million and $1.8 million of stock-based compensation expense (included in personnel on the consolidated statements of income) for the three months ended March 31, 2023 and 2022, respectively, associated with its common stock awards granted to officers and employees. As of March 31, 2023, there was approximately $17.2 million of unrecognized compensation cost related to equity award grants, which is expected to be recognized over the remaining vesting period of approximately three years. The Company recognized a tax benefit of less than $0.1 million and approximately $0.4 million for the three months ended March 31, 2023 and 2022, respectively, for the tax impact of stock option exercises and vesting of restricted stock.

Note 5 – Securities and Other Investments

Securities

Securities are classified as AFS or HTM on the consolidated balance sheets at the time of purchase. AFS securities include those securities that the Company intends to hold for an indefinite period of time, but not necessarily to maturity, and are carried at fair value on the consolidated balance sheets. HTM securities include those securities which the Company has both the positive intent and ability to hold to maturity, and are carried at amortized cost on the consolidated balance sheets. Premiums and discounts on investment securities are amortized or accreted into interest income over the estimated life of the related securities using the effective interest method.

The amortized cost and fair value of securities AFS and HTM are summarized as follows.

	March 31, 2023
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities AFS:
U.S. Treasury securities	$	192,166	$	—	$	6,058	$	186,108
U.S. government agency securities	9,959		36		25		9,970
State, county and municipals	428,643		692		31,887		397,448
Mortgage-backed securities	350,712		—		39,091		311,621
Corporate debt securities	125,349		—		7,320		118,029
Total securities AFS	$	1,106,829	$	728	$	84,381	$	1,023,176

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	December 31, 2022
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities AFS:
U.S. Treasury securities	$	192,116	$	—	$	8,286	$	183,830
U.S. government agency securities	2,133		—		33		2,100
State, county and municipals	433,733		123		35,668		398,188
Mortgage-backed securities	227,650		10		26,728		200,932
Corporate debt securities	140,712		3		8,147		132,568
Total securities AFS	$	996,344	$	136	$	78,862	$	917,618
Securities HTM:
U.S. Treasury securities	$	497,648	$	—	$	35,722	$	461,926
U.S. government agency securities	8,744		46		—		8,790
State, county and municipals	34,874		—		3,349		31,525
Mortgage-backed securities	137,862		—		16,751		121,111
Total securities HTM	$	679,128	$	46	$	55,822	$	623,352

On March 7, 2023, Nicolet executed the sale of $500 million (par value) U.S. Treasury held to maturity securities for a pre-tax loss of $38 million or an after-tax loss of $28 million. Proceeds from the sale were used to reduce existing FHLB borrowings with the remainder held in investable cash. As a result of the sale of securities previously classified as held to maturity, the remaining unsold portfolio of held to maturity securities, with a book value of $177 million, was reclassified to available for sale with a carrying value of approximately $157 million. The unrealized loss on this portfolio of $20 million increased the balance of accumulated other comprehensive loss $15 million, net of the deferred tax effect, and is subject to future market changes.

Proceeds and realized gains or losses from the sale of AFS and HTM securities were as follows.

	Three Months Ended March 31,
(in thousands)	2023		2022
Securities AFS:
Gross gains	$	126	$	20
Gross losses	(339)		(5)
Gains (losses) on sales of securities AFS, net	$	(213)	$	15
Proceeds from sales of securities AFS	$	22,565	$	3,400
Securities HTM:
Gross gains	$	—	$	—
Gross losses	(37,723)		—
Gains (losses) on sales of securities HTM, net	$	(37,723)	$	—
Proceeds from sales of securities HTM	$	460,051	$	—

All mortgage-backed securities included in the tables above were issued by U.S. government agencies and corporations. Investment securities with a carrying value of $414 million and $883 million, as of March 31, 2023 and December 31, 2022, respectively, were pledged as collateral to secure public deposits and borrowings, as applicable, and for liquidity or other purposes as required by regulation. Accrued interest on investment securities totaled $6 million at both March 31, 2023 and December 31, 2022, and is included in accrued interest receivable and other assets on the consolidated balance sheets.

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The following table presents gross unrealized losses and the related estimated fair value of investment securities for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position.

	March 31, 2023
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Number of Securities
Securities AFS:
U.S. Treasury securities	$	456	$	8	$	185,640	$	6,050	$	186,096	$	6,058	9
U.S. government agency securities	2,718		20		107		5		2,825		25		9
State, county and municipals	79,617		1,826		247,397		30,061		327,014		31,887		608
Mortgage-backed securities	35,724		2,158		275,897		36,933		311,621		39,091		464
Corporate debt securities	68,654		2,583		44,995		4,737		113,649		7,320		75
Total	$	187,169	$	6,595	$	754,036	$	77,786	$	941,205	$	84,381	1,165

	December 31, 2022
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Number of Securities
Securities AFS:
U.S. Treasury securities	$	448	$	14	$	183,382	$	8,272	$	183,830	$	8,286	9
U.S. government agency securities	2,083		32		17		1		2,100		33		9
State, county and municipals	277,546		18,041		86,569		17,627		364,115		35,668		812
Mortgage-backed securities	102,108		11,320		95,614		15,408		197,722		26,728		376
Corporate debt securities	114,887		6,186		12,938		1,961		127,825		8,147		90
Total	$	497,072	$	35,593	$	378,520	$	43,269	$	875,592	$	78,862	1,296
Securities HTM:
U.S. Treasury securities	$	—	$	—	$	461,926	$	35,722	$	461,926	$	35,722	6
State, county and municipals	17,591		1,594		11,654		1,755		29,245		3,349		58
Mortgage-backed securities	68,108		8,029		53,003		8,722		121,111		16,751		106
Total	$	85,699	$	9,623	$	526,583	$	46,199	$	612,282	$	55,822	170

During first quarter 2023, the Company recognized provision expense of $2.3 million related to the expected credit loss on its Signature Bank sub debt investment (acquired in an acquisition), and immediately charged-off the full investment. The Company does not consider its remaining securities AFS with unrealized losses to be attributable to credit-related factors, as the unrealized losses in each category have occurred as a result of changes in noncredit-related factors such as changes in interest rates, market spreads and market conditions subsequent to purchase, not credit deterioration. Furthermore, the Company does not have the intent to sell any of these AFS securities and believes that it is more likely than not that we will not have to sell any such securities before a recovery of cost. As of March 31, 2023 and December 31, 2022, no allowance for credit losses on AFS securities was recognized.

The Company evaluated the HTM securities and determined no allowance for credit losses was necessary at December 31, 2022. The U.S. Treasury and U.S. government agency securities are guaranteed by the U.S. government. For the state, county and municipal securities, management considered issuer bond ratings, historical loss rates by bond ratings, whether issuers continue to make timely principal and interest payments per the contractual terms of the investment securities, internal forecasts, and whether or not such investment securities provide insurance, other credit enhancement, or are pre-refunded by the issuers. For the mortgage-backed securities, all such securities were issued by U.S. government agencies and corporations, which are currently explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses.

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The amortized cost and fair value of investment securities by contractual maturity are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties; as this is particularly inherent in mortgage-backed securities, these securities are not included in the maturity categories below.

As of March 31, 2023	Securities AFS
(in thousands)	Amortized Cost		Fair Value
Due in less than one year	$	225,921	$	223,243
Due in one year through five years	173,794		163,788
Due after five years through ten years	223,776		201,296
Due after ten years	132,626		123,228
	756,117		711,555
Mortgage-backed securities	350,712		311,621
Total investment securities	$	1,106,829	$	1,023,176

Other Investments

Other investments include “restricted” equity securities, equity securities with readily determinable fair values, and private company securities. As a member of the Federal Reserve Bank System and the Federal Home Loan Bank (“FHLB”) System, Nicolet is required to maintain an investment in the capital stock of these entities. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other exchange traded equity securities. As no ready market exists for these stocks, and they have no quoted market value, these investments are carried at cost. Also included are investments in other private companies that do not have quoted market prices, which are carried at cost less impairment charges, if any. The carrying value of other investments are summarized as follows.

	March 31, 2023		December 31, 2022
(in thousands)	Amount		Amount
Federal Reserve Bank stock	$	32,708	$	32,219
Federal Home Loan Bank (“FHLB”) stock	10,174		18,625
Equity securities with readily determinable fair values	3,912		4,376
Other investments	10,688		10,066
Total other investments	$	57,482	$	65,286

Note 6 – Loans, Allowance for Credit Losses - Loans, and Credit Quality

The loan composition is summarized as follows.

	March 31, 2023					December 31, 2022
(in thousands)	Amount			% of Total		Amount			% of Total
Commercial & industrial	$	1,330,052		21	%	$	1,304,819		21	%
Owner-occupied commercial real estate (“CRE”)	969,064			16		954,599			15
Agricultural	1,065,909			17		1,088,607			18
CRE investment	1,146,388			19		1,149,949			19
Construction & land development	333,370			5		318,600			5
Residential construction	134,782			2		114,392			2
Residential first mortgage	1,014,166			16		1,016,935			16
Residential junior mortgage	177,026			3		177,332			3
Retail & other	52,975			1		55,266			1
Loans	6,223,732			100	%	6,180,499			100	%
Less allowance for credit losses - Loans (“ACL-Loans”)	62,412					61,829
Loans, net	$	6,161,320				$	6,118,670
Allowance for credit losses - Loans to loans	1.00		%			1.00		%

Accrued interest on loans totaled $16 million and $15 million at March 31, 2023 and December 31, 2022, respectively, and is included in accrued interest receivable and other assets on the consolidated balance sheets.

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Allowance for Credit Losses - Loans:

The majority of the Company’s loans, commitments, and letters of credit have been granted to customers in the Company’s market area. Although the Company has a diversified loan portfolio, the credit risk in the loan portfolio is largely influenced by general economic conditions and trends of the counties and markets in which the debtors operate, and the resulting impact on the operations of borrowers or on the value of underlying collateral, if any.

A roll forward of the allowance for credit losses - loans is summarized as follows.

	Three Months Ended				Year Ended
(in thousands)	March 31, 2023		March 31, 2022		December 31, 2022
Beginning balance	$	61,829	$	49,672	$	49,672
ACL on PCD loans acquired	—		—		1,937
Provision for credit losses	750		300		10,950
Charge-offs	(184)		(100)		(1,033)
Recoveries	17		34		303
Net (charge-offs) recoveries	(167)		(66)		(730)
Ending balance	$	62,412	$	49,906	$	61,829

The following tables present the balance and activity in the ACL-Loans by portfolio segment.

	Three Months Ended March 31, 2023
(in thousands)	Commercial & industrial			Owner- occupied CRE			Agricultural			CRE investment			Construction & land development			Residential construction			Residential first mortgage			Residential junior mortgage			Retail & other			Total
ACL-Loans
Beginning balance	$	16,350		$	9,138		$	9,762		$	12,744		$	2,572		$	1,412		$	6,976		$	1,846		$	1,029		$	61,829
Provision	457			172			(328)			210			106			262			(206)			(31)			108			750
Charge-offs	(118)			—			—			—			—			—			—			—			(66)			(184)
Recoveries	10			—			2			—			—			—			1			—			4			17
Net (charge-offs) recoveries	(108)			—			2			—			—			—			1			—			(62)			(167)
Ending balance	$	16,699		$	9,310		$	9,436		$	12,954		$	2,678		$	1,674		$	6,771		$	1,815		$	1,075		$	62,412
As % of ACL-Loans	27		%	15		%	15		%	21		%	4		%	2		%	11		%	3		%	2		%	100		%

	Year Ended December 31, 2022
(in thousands)	Commercial & industrial			Owner- occupied CRE			Agricultural			CRE investment			Construction & land development			Residential construction			Residential first mortgage			Residential junior mortgage			Retail & other			Total
ACL-Loans
Beginning balance	$	12,613		$	7,222		$	9,547		$	8,462		$	1,812		$	900		$	6,844		$	1,340		$	932		$	49,672
ACL on PCD loans	1,408			384			—			38			2			—			93			12			—			1,937
Provision	2,415			2,087			215			4,075			758			512			96			493			299			10,950
Charge-offs	(190)			(555)			—			—			—			—			(65)			—			(223)			(1,033)
Recoveries	104			—			—			169			—			—			8			1			21			303
Net (charge-offs) recoveries	(86)			(555)			—			169			—			—			(57)			1			(202)			(730)
Ending balance	$	16,350		$	9,138		$	9,762		$	12,744		$	2,572		$	1,412		$	6,976		$	1,846		$	1,029		$	61,829
As % of ACL-Loans	26		%	15		%	16		%	21		%	4		%	2		%	11		%	3		%	2		%	100		%

The ACL-Loans represents management’s estimate of expected credit losses in the Company’s loan portfolio at the balance sheet date. To assess the appropriateness of the ACL-Loans, management applies an allocation methodology which focuses on evaluation of qualitative and environmental factors, including but not limited to: (i) evaluation of facts and issues related to specific loans; (ii) management’s ongoing review and grading of the loan portfolio; (iii) consideration of historical loan loss and delinquency experience on each portfolio segment; (iv) trends in past due and nonperforming loans; (v) the risk characteristics of the various loan segments; (vi) changes in the size and character of the loan portfolio; (vii) concentrations of loans to specific borrowers or industries; (viii) existing economic conditions; (ix) the fair value of underlying collateral; and (x) other qualitative and quantitative factors which could affect expected credit losses. Assessing these numerous factors involves significant judgment.

Management allocates the ACL-Loans by pools of risk within each loan portfolio segment. The allocation methodology consists of the following components. First, a specific reserve is established for individually evaluated credit-deteriorated loans, which management defines as nonaccrual credit relationships over $250,000, collateral dependent loans, purchased credit deteriorated loans, and other loans with evidence of credit deterioration. The specific reserve in the ACL-Loans for these credit

15

deteriorated loans is equal to the aggregate collateral or discounted cash flow shortfall. Management allocates the ACL-Loans with historical loss rates by loan segment. The loss factors are measured on a quarterly basis and applied to each loan segment based on current loan balances and projected for their expected remaining life. Next, management allocates the ACL-Loans using the qualitative factors mentioned above. Consideration is given to those current qualitative or environmental factors that are likely to cause estimated credit losses as of the evaluation date to differ from the historical loss experience of each loan segment. Lastly, management considers reasonable and supportable forecasts to assess the collectability of future cash flows.

Allowance for Credit Losses-Unfunded Commitments:

In addition to the ACL-Loans, the Company has established an ACL-Unfunded commitments, classified in accrued interest payable and other liabilities on the consolidated balance sheets. This reserve is maintained at a level that management believes is sufficient to absorb losses arising from unfunded loan commitments, and is determined quarterly based on methodology similar to the methodology for determining the ACL-Loans. The reserve for unfunded commitments was $3.0 million at both March 31, 2023 and December 31, 2022.

Provision for Credit Losses:

The provision for credit losses is determined by the Company as the amount to be added to the ACL loss accounts for various types of financial instruments including loans, investment securities, and off-balance sheet credit exposures after net charge-offs have been deducted to bring the ACL to a level that, in management’s judgment, is necessary to absorb expected credit losses over the lives of the respective financial instruments. See Note 5 for additional information regarding the ACL related to investment securities. The following table presents the components of the provision for credit losses.

	Three Months Ended				Year Ended
(in thousands)	March 31, 2023		March 31, 2022		December 31, 2022
Provision for credit losses on:
Loans	$	750	$	300	$	10,950
Unfunded commitments	—		—		550
Investment securities	2,340		—		—
Total	$	3,090	$	300	$	11,500

16

Collateral Dependent Loans:

A loan is considered to be collateral dependent when, based upon management’s assessment, the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. For collateral dependent loans, expected credit losses are based on the estimated fair value of the collateral at the balance sheet date, with consideration for estimated selling costs if satisfaction of the loan depends on the sale of the collateral. The following tables present collateral dependent loans by portfolio segment and collateral type, including those loans with and without a related allowance allocation.

March 31, 2023	Collateral Type
(in thousands)	Real Estate		Other Business Assets		Total		Without an Allowance		With an Allowance		Allowance Allocation
Commercial & industrial	$	—	$	2,419	$	2,419	$	1,084	$	1,335	$	506
Owner-occupied CRE	5,905		—		5,905		5,697		208		54
Agricultural	12,656		5,800		18,456		12,751		5,705		166
CRE investment	3,158		—		3,158		2,635		523		7
Construction & land development	650		—		650		650		—		—
Residential first mortgage	1,357		—		1,357		1,357		—		—
Residential junior mortgage	8		—		8		8		—		—
Total loans	$	23,734	$	8,219	$	31,953	$	24,182	$	7,771	$	733

December 31, 2022	Collateral Type
(in thousands)	Real Estate		Other Business Assets		Total		Without an Allowance		With an Allowance		Allowance Allocation
Commercial & industrial	$	—	$	3,475	$	3,475	$	1,927	$	1,548	$	595
Owner-occupied CRE	4,907		—		4,907		4,699		208		53
Agricultural	13,758		6,458		20,216		14,358		5,858		261
CRE investment	2,713		—		2,713		979		1,734		212
Construction & land development	670		—		670		670		—		—
Residential first mortgage	91		—		91		91		—		—
Total loans	$	22,139	$	9,933	$	32,072	$	22,724	$	9,348	$	1,121

17

Past Due and Nonaccrual Loans:

The following tables present past due loans by portfolio segment.

	March 31, 2023
(in thousands)	30-89 Days Past Due (accruing)			90 Days & Over or nonaccrual			Current			Total
Commercial & industrial	$	256		$	2,874		$	1,326,922		$	1,330,052
Owner-occupied CRE	388			7,128			961,548			969,064
Agricultural	178			18,782			1,046,949			1,065,909
CRE investment	—			4,126			1,142,262			1,146,388
Construction & land development	—			748			332,622			333,370
Residential construction	1,144			—			133,638			134,782
Residential first mortgage	3,852			4,986			1,005,328			1,014,166
Residential junior mortgage	219			196			176,611			177,026
Retail & other	222			55			52,698			52,975
Total loans	$	6,259		$	38,895		$	6,178,578		$	6,223,732
Percent of total loans	0.1		%	0.6		%	99.3		%	100.0		%

	December 31, 2022
(in thousands)	30-89 Days Past Due (accruing)			90 Days & Over or nonaccrual			Current			Total
Commercial & industrial	$	210		$	3,328		$	1,301,281		$	1,304,819
Owner-occupied CRE	833			5,647			948,119			954,599
Agricultural	20			20,416			1,068,171			1,088,607
CRE investment	—			3,832			1,146,117			1,149,949
Construction & land development	—			771			317,829			318,600
Residential construction	—			—			114,392			114,392
Residential first mortgage	3,628			3,780			1,009,527			1,016,935
Residential junior mortgage	236			224			176,872			177,332
Retail & other	261			82			54,923			55,266
Total loans	$	5,188		$	38,080		$	6,137,231		$	6,180,499
Percent of total loans	0.1		%	0.6		%	99.3		%	100.0		%

The following table presents nonaccrual loans by portfolio segment.

	March 31, 2023					December 31, 2022
(in thousands)	Nonaccrual Loans			% of Total		Nonaccrual Loans			% of Total
Commercial & industrial	$	2,874		7	%	$	3,328		9	%
Owner-occupied CRE	7,128			18		5,647			15
Agricultural	18,782			48		20,416			53
CRE investment	4,126			11		3,832			10
Construction & land development	748			2		771			2
Residential construction	—			—		—			—
Residential first mortgage	4,986			13		3,780			10
Residential junior mortgage	196			1		224			1
Retail & other	55			—		82			—
Nonaccrual loans	$	38,895		100	%	$	38,080		100	%
Percent of total loans	0.6		%			0.6		%

18

Credit Quality Information:

The following tables present total loans by risk categories and gross charge-offs by year of origination. Acquired loans have been included based upon the actual origination date.

March 31, 2023	Amortized Cost Basis by Origination Year
(in thousands)	2023		2022		2021		2020		2019		Prior		Revolving		Revolving to Term		TOTAL
Commercial & industrial
Grades 1-4	$	47,409	$	312,964	$	215,435	$	96,534	$	65,723	$	111,114	$	376,926	$	—	$	1,226,105
Grade 5	95		4,204		4,640		6,548		1,195		11,392		27,894		—		55,968
Grade 6	—		1,358		618		66		—		11,881		6,543		—		20,466
Grade 7	291		3,613		1,894		2,165		2,371		2,411		14,768		—		27,513
Total	$	47,795	$	322,139	$	222,587	$	105,313	$	69,289	$	136,798	$	426,131	$	—	$	1,330,052
Current period gross charge-offs	$	—	$	(77)	$	(26)	$	—	$	—	$	—	$	(15)	$	—	$	(118)
Owner-occupied CRE
Grades 1-4	$	28,513	$	155,362	$	196,641	$	103,973	$	97,039	$	322,852	$	4,773	$	—	$	909,153
Grade 5	1,381		3,134		6,310		4,485		908		17,497		490		—		34,205
Grade 6	—		1,000		355		41		1,575		2,070		250		—		5,291
Grade 7	—		224		684		7,244		1,358		10,905		—		—		20,415
Total	$	29,894	$	159,720	$	203,990	$	115,743	$	100,880	$	353,324	$	5,513	$	—	$	969,064
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Agricultural
Grades 1-4	$	11,930	$	280,631	$	138,443	$	83,733	$	25,089	$	152,730	$	227,727	$	—	$	920,283
Grade 5	1,239		13,311		11,668		1,762		879		39,707		20,436		—		89,002
Grade 6	50		62		1,244		—		52		2,332		195		—		3,935
Grade 7	695		7,199		7,271		786		1,942		23,812		10,984		—		52,689
Total	$	13,914	$	301,203	$	158,626	$	86,281	$	27,962	$	218,581	$	259,342	$	—	$	1,065,909
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
CRE investment
Grades 1-4	$	8,011	$	205,798	$	228,060	$	189,172	$	132,082	$	326,737	$	11,704	$	—	$	1,101,564
Grade 5	2,825		563		1,633		3,552		3,312		21,095		—		—		32,980
Grade 6	—		—		—		—		1,159		3,778		183		—		5,120
Grade 7	—		—		21		523		2,316		3,663		201		—		6,724
Total	$	10,836	$	206,361	$	229,714	$	193,247	$	138,869	$	355,273	$	12,088	$	—	$	1,146,388
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Construction & land development
Grades 1-4	$	6,947	$	119,087	$	144,313	$	11,980	$	8,802	$	36,033	$	5,290	$	—	$	332,452
Grade 5	—		34		—		—		12		92		—		—		138
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		32		—		—		—		748		—		—		780
Total	$	6,947	$	119,153	$	144,313	$	11,980	$	8,814	$	36,873	$	5,290	$	—	$	333,370
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential construction
Grades 1-4	$	5,036	$	114,512	$	12,948	$	1,045	$	121	$	549	$	—	$	—	$	134,211
Grade 5	—		—		571		—		—		—		—		—		571
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		—		—		—		—		—		—		—
Total	$	5,036	$	114,512	$	13,519	$	1,045	$	121	$	549	$	—	$	—	$	134,782
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential first mortgage
Grades 1-4	$	35,309	$	309,434	$	270,665	$	142,741	$	66,489	$	173,612	$	1,426	$	3	$	999,679
Grade 5	—		1,364		776		987		1,776		2,759		—		—		7,662
Grade 6	—		—		—		—		703		—		—		—		703
Grade 7	—		152		477		178		359		4,956		—		—		6,122
Total	$	35,309	$	310,950	$	271,918	$	143,906	$	69,327	$	181,327	$	1,426	$	3	$	1,014,166
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential junior mortgage
Grades 1-4	$	2,784	$	9,905	$	4,291	$	5,055	$	3,071	$	4,780	$	140,169	$	6,570	$	176,625
Grade 5	—		—		—		—		—		—		—		—		—
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		35		205		—		—		23		138		—		401
Total	$	2,784	$	9,940	$	4,496	$	5,055	$	3,071	$	4,803	$	140,307	$	6,570	$	177,026
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Retail & other
Grades 1-4	$	1,646	$	10,603	$	8,010	$	3,659	$	2,622	$	4,451	$	21,885	$	—	$	52,876
Grade 5	—		—		21		—		—		—		—		—		21
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		46		2		1		29		—		—		78
Total	$	1,646	$	10,603	$	8,077	$	3,661	$	2,623	$	4,480	$	21,885	$	—	$	52,975
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	(66)	$	—	$	(66)
Total loans	$	154,161	$	1,554,581	$	1,257,240	$	666,231	$	420,956	$	1,292,008	$	871,982	$	6,573	$	6,223,732

19

December 31, 2022	Amortized Cost Basis by Origination Year
(in thousands)	2022		2021		2020		2019		2018		Prior		Revolving		Revolving to Term		TOTAL
Commercial & industrial
Grades 1-4	$	317,394	$	226,065	$	101,374	$	68,884	$	50,189	$	77,589	$	360,978	$	—	$	1,202,473
Grade 5	9,938		5,902		10,811		1,530		3,986		4,562		20,617		—		57,346
Grade 6	1,459		2,283		629		511		402		11,653		14,047		—		30,984
Grade 7	556		293		3,211		2,990		775		1,070		5,121		—		14,016
Total	$	329,347	$	234,543	$	116,025	$	73,915	$	55,352	$	94,874	$	400,763	$	—	$	1,304,819
Current period gross charge-offs	$	(38)	$	(41)	$	(2)	$	—	$	(109)	$	—	$	—	$	—	$	(190)
Owner-occupied CRE
Grades 1-4	$	151,391	$	190,313	$	105,156	$	100,606	$	91,479	$	252,574	$	6,734	$	—	$	898,253
Grade 5	5,241		3,192		4,287		2,163		4,791		14,632		348		—		34,654
Grade 6	—		—		763		2,361		—		877		—		—		4,001
Grade 7	227		706		6,344		616		—		9,798		—		—		17,691
Total	$	156,859	$	194,211	$	116,550	$	105,746	$	96,270	$	277,881	$	7,082	$	—	$	954,599
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	(555)	$	—	$	—	$	(555)
Agricultural
Grades 1-4	$	275,208	$	145,272	$	85,413	$	25,463	$	19,687	$	130,849	$	249,033	$	—	$	930,925
Grade 5	13,295		18,178		2,694		1,992		517		43,927		21,199		—		101,802
Grade 6	115		1,457		28		33		—		5,258		429		—		7,320
Grade 7	7,165		2,632		720		1,977		4,611		19,948		11,507		—		48,560
Total	$	295,783	$	167,539	$	88,855	$	29,465	$	24,815	$	199,982	$	282,168	$	—	$	1,088,607
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
CRE investment
Grades 1-4	$	205,930	$	229,252	$	192,527	$	134,301	$	79,649	$	248,595	$	11,383	$	—	$	1,101,637
Grade 5	567		1,649		3,578		4,266		3,086		24,897		—		—		38,043
Grade 6	—		—		—		1,170		2,396		2,483		206		—		6,255
Grade 7	—		—		121		299		245		3,140		209		—		4,014
Total	$	206,497	$	230,901	$	196,226	$	140,036	$	85,376	$	279,115	$	11,798	$	—	$	1,149,949
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Construction & land development
Grades 1-4	$	104,804	$	140,727	$	12,188	$	9,747	$	23,811	$	13,138	$	13,235	$	—	$	317,650
Grade 5	37		—		—		14		—		95		—		—		146
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	33		—		—		—		—		771		—		—		804
Total	$	104,874	$	140,727	$	12,188	$	9,761	$	23,811	$	14,004	$	13,235	$	—	$	318,600
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential construction
Grades 1-4	$	92,417	$	16,774	$	966	$	123	$	336	$	229	$	3,547	$	—	$	114,392
Grade 5	—		—		—		—		—		—		—		—		—
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		—		—		—		—		—		—		—
Total	$	92,417	$	16,774	$	966	$	123	$	336	$	229	$	3,547	$	—	$	114,392
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential first mortgage
Grades 1-4	$	318,628	$	272,011	$	147,857	$	68,975	$	31,208	$	162,153	$	2,080	$	3	$	1,002,915
Grade 5	1,494		758		997		1,803		2,272		465		—		—		7,789
Grade 6	—		—		—		711		—		—		—		—		711
Grade 7	154		329		188		349		197		4,303		—		—		5,520
Total	$	320,276	$	273,098	$	149,042	$	71,838	$	33,677	$	166,921	$	2,080	$	3	$	1,016,935
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	(65)	$	—	$	—	$	(65)
Residential junior mortgage
Grades 1-4	$	10,119	$	4,580	$	5,207	$	3,151	$	1,573	$	3,409	$	142,784	$	5,762	$	176,585
Grade 5	—		—		—		—		—		143		165		—		308
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		206		—		—		—		24		209		—		439
Total	$	10,119	$	4,786	$	5,207	$	3,151	$	1,573	$	3,576	$	143,158	$	5,762	$	177,332
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Retail & other
Grades 1-4	$	12,318	$	8,957	$	4,221	$	3,188	$	1,035	$	24,950	$	492	$	—	$	55,161
Grade 5	—		23		—		—		—		—		—		—		23
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		23		22		2		30		5		—		—		82
Total	$	12,318	$	9,003	$	4,243	$	3,190	$	1,065	$	24,955	$	492	$	—	$	55,266
Current period gross charge-offs	$	—	$	(1)	$	(6)	$	(1)	$	—	$	—	$	(215)	$	—	$	(223)
Total loans	$	1,528,490	$	1,271,582	$	689,302	$	437,225	$	322,275	$	1,061,537	$	864,323	$	5,765	$	6,180,499

20

An internal loan review function rates loans using a grading system based on different risk categories. Loans with a Substandard grade are considered to have a greater risk of loss and may be assigned allocations for loss based on specific review of the weaknesses observed in the individual credits. Such loans are monitored by the loan review function to help ensure early identification of any deterioration. A description of the loan risk categories used by the Company follows.

Grades 1-4, Pass: Credits exhibit adequate cash flows, appropriate management and financial ratios within industry norms and/or are supported by sufficient collateral. Some credits in these rating categories may require a need for monitoring but elements of concern are not severe enough to warrant an elevated rating.

Grade 5, Watch: Credits with this rating are adequately secured and performing but are being monitored due to the presence of various short-term weaknesses which may include unexpected, short-term adverse financial performance, managerial problems, potential impact of a decline in the entire industry or local economy and delinquency issues. Loans to individuals or loans supported by guarantors with marginal net worth or collateral may be included in this rating category.

Grade 6, Special Mention: Credits with this rating have potential weaknesses that, without the Company’s attention and correction may result in deterioration of repayment prospects. These assets are considered Criticized Assets. Potential weaknesses may include adverse financial trends for the borrower or industry, repeated lack of compliance with Company requests, increasing debt to net worth, serious management conditions and decreasing cash flow.

Grade 7, Substandard: Assets with this rating are characterized by the distinct possibility the Company will sustain some loss if deficiencies are not corrected. All foreclosures, liquidations, and nonaccrual loans are considered to be categorized in this rating, regardless of collateral sufficiency.

Modifications to Borrowers Experiencing Financial Difficulty:

On January 1, 2023, the Company adopted ASU 2022-02, which eliminated the accounting guidance for TDRs by creditors and enhanced the disclosure requirements for certain loan modifications to borrowers experiencing financial difficulty. The following table presents the amortized cost of loans that were both experiencing financial difficulty and were modified during the three months ended March 31, 2023, aggregated by portfolio segment and type of modification.

(in thousands)	Payment Delay		Term Extension		Interest Rate Reduction		Term Extension & Interest Rate Reduction		Total		% of Total Loans
Commercial & industrial	$	—	$	—	$	—	$	—	$	—	—	%
Owner-occupied CRE	—		—		—		—		—		—	%
Agricultural	110		—		—		—		110		0.01	%
CRE investment	—		—		—		—		—		—	%
Construction & land development	—		—		—		—		—		—	%
Residential first mortgage	—		—		—		—		—		—	%
Total	$	110	$	—	$	—	$	—	$	110	—	%

The loans presented in the table above have had more than insignificant payment delays (which the Company has defined as payment delays in excess of six months). These modified loans are closely monitored by the Company to understand the effectiveness of its modification efforts, and such loans generally remain in nonaccrual status pending a sustained period of performance in accordance with the modified terms.

As of March 31, 2023, there were no loans made to borrowers experiencing financial difficulty that were modified during the current period and subsequently defaulted, and there were no commitments to lend additional funds to such debtors.

Troubled Debt Restructuring Disclosures Prior to Adoption of ASU 2022-02:

As of December 31, 2022, the Company had restructured loans totaling $18 million, with a pre-modification balance of $24 million, all of which were also reflected as nonaccrual loans. There were no restructured loans modified during 2022 that subsequently defaulted, and there were no commitments to lend additional funds to such debtors.

21

Note 7 – Goodwill and Other Intangibles and Servicing Rights

Management periodically reviews the carrying value of its intangible assets to determine if any impairment has occurred, in which case an impairment charge would be recorded as an expense in the period of impairment, or whether changes in circumstances have occurred that would require a revision to the remaining useful life that would affect expense prospectively. In making such determination, management evaluates whether there are any adverse qualitative factors indicating that an impairment may exist, as well as the performance of the underlying operations or assets which give rise to the intangible. Management also regularly monitors economic factors for potential impairment indications on the value of our franchise, stability of deposits, and the wealth client base, underlying our goodwill and other intangibles. Management concluded no impairment was indicated for the three months ended March 31, 2023 and the year ended December 31, 2022. A summary of goodwill and other intangibles was as follows.

(in thousands)	March 31, 2023		December 31, 2022
Goodwill	$	367,387	$	367,387
Core deposit intangibles	30,667		32,701
Customer list intangibles	2,223		2,350
Other intangibles	32,890		35,051
Goodwill and other intangibles, net	$	400,277	$	402,438

Goodwill: A summary of goodwill was as follows. During 2022, goodwill increased due to the Charter acquisition.

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Goodwill:
Goodwill at beginning of year	$	367,387	$	317,189
Acquisitions	—		49,970
Purchase accounting adjustment	—		228
Goodwill at end of period	$	367,387	$	367,387

Other intangible assets: Other intangible assets, consisting of core deposit intangibles and customer list intangibles, are amortized over their estimated finite lives. A summary of other intangible assets was as follows. During 2022, core deposit intangibles increased due to the Charter acquisition.

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Core deposit intangibles:
Gross carrying amount	$	60,724	$	60,724
Accumulated amortization	(30,057)		(28,023)
Net book value	$	30,667	$	32,701
Additions during the period	$	—	$	19,364
Amortization during the period	$	2,034	$	6,108
Customer list intangibles:
Gross carrying amount	$	5,523	$	5,523
Accumulated amortization	(3,300)		(3,173)
Net book value	$	2,223	$	2,350
Amortization during the period	$	127	$	508

22

Mortgage servicing rights (“MSR”): Mortgage servicing rights are amortized in proportion to and over the period of estimated net servicing income, and assessed for impairment at each reporting date, with the amortization recorded in mortgage income, net, in the consolidated statements of income. Mortgage servicing rights are carried at the lower of the initial capitalized amount, net of accumulated amortization, or estimated fair value, and are included in other assets in the consolidated balance sheets. The Company periodically evaluates its mortgage servicing rights asset for impairment. At each reporting date, impairment is assessed based on estimated fair value using estimated prepayment speeds of the underlying mortgage loans serviced and stratification based on the risk characteristics of the underlying loans (predominantly loan type and note interest rate). A summary of the changes in the mortgage servicing rights asset was as follows.

	Three Months Ended			Year Ended
(in thousands)	March 31, 2023			December 31, 2022
Mortgage servicing rights asset:
MSR asset at beginning of year	$	13,080		$	13,636
Capitalized MSR	204			2,327
Amortization during the period	(740)			(2,883)
MSR asset at end of period	$	12,544		$	13,080
Valuation allowance at beginning of year	$	(500)		$	(1,200)
Reversals	500			700
Valuation allowance at end of period	$	—		$	(500)
MSR asset, net	$	12,544		$	12,580
Fair value of MSR asset at end of period	$	17,708		$	17,215
Residential mortgage loans serviced for others	$	1,620,150		$	1,637,109
Net book value of MSR asset to loans serviced for others	0.77		%	0.77		%

Loan servicing rights (“LSR”): The Company acquired an LSR asset in December 2021 which will be amortized over the estimated remaining loan service period. The Company does not expect to add new loans to this servicing portfolio. A summary of the changes in the LSR asset were as follows.

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Loan servicing rights asset:
LSR asset at beginning of year	$	11,039	$	20,055
Amortization during the period	(552)		(9,016)
LSR asset at end of period	$	10,487	$	11,039
Agricultural loans serviced for others	$	528,891	$	538,392

The following table shows the estimated future amortization expense for amortizing intangible assets and the servicing assets. The projections are based on existing asset balances, the current interest rate environment and prepayment speeds as of March 31, 2023. The actual amortization expense the Company recognizes in any given period may be significantly different depending upon acquisition or sale activities, changes in interest rates, prepayment speeds, market conditions, regulatory requirements and events or circumstances that indicate the carrying amount of an asset may not be recoverable.

(in thousands)	Core deposit intangibles		Customer list intangibles		MSR asset		LSR asset
Year ending December 31,
2023 (remaining nine months)	$	5,555	$	356	$	1,672	$	1,656
2024	6,298		449		2,680		1,962
2025	5,161		449		1,942		1,717
2026	3,983		249		1,434		1,472
2027	3,218		166		1,434		1,227
2028	2,622		166		1,432		981
Thereafter	3,830		388		1,950		1,472
Total	$	30,667	$	2,223	$	12,544	$	10,487

23

Note 8 – Short and Long-Term Borrowings

Short-Term Borrowings:

Short-term borrowings include any borrowing with an original maturity of one year or less. At March 31, 2023, short-term borrowings included $50 million of short-term FHLB advances due in September 2023 with a weighted average rate of 4.26%. At December 31, 2022, short-term borrowings included $317 million of short-term FHLB advances, comprised of $117 million due in January 2023 at a weighted average rate of 4.29% and $200 million due in September 2023 at a weighted average rate of 4.30%.

Long-Term Borrowings:

Long-term borrowings include any borrowing with an original maturity greater than one year. The components of long-term borrowings were as follows.

(in thousands)	March 31, 2023		December 31, 2022
FHLB advances	$	5,000	$	33,000
Junior subordinated debentures	39,928		39,720
Subordinated notes	152,520		152,622
Total long-term borrowings	$	197,448	$	225,342

FHLB Advances: The Federal Home Loan Bank (“FHLB”) advances bear fixed rates, require interest-only monthly payments, and have maturity dates through March 2025. The weighted average rate of the FHLB advances was 1.55% at March 31, 2023 and 1.09% at December 31, 2022.

Junior Subordinated Debentures: Each of the junior subordinated debentures was issued to an underlying statutory trust (the “statutory trusts”), which issued trust preferred securities and common securities and used the proceeds from the issuance of the common and the trust preferred securities to purchase the junior subordinated debentures of the Company. The debentures represent the sole asset of the statutory trusts. All of the common securities of the statutory trusts are owned by the Company. The statutory trusts are not included in the consolidated financial statements. The net effect of all the documents entered into with respect to the trust preferred securities is that the Company, through payments on its debentures, is liable for the distributions and other payments required on the trust preferred securities. Interest on all debentures is current. Any applicable discounts (initially recorded to carry an acquired debenture at its then estimated fair value) are being accreted to interest expense over the remaining life of the debenture. All the junior subordinated debentures are currently callable and may be redeemed in part or in full, at par, plus any accrued but unpaid interest. At both March 31, 2023 and December 31, 2022, approximately $38 million of trust preferred securities qualify as Tier 1 capital.

Subordinated Notes (the “Notes”): In July 2021, the Company completed the private placement of $100 million in fixed-to-floating rate subordinated notes due in 2031, with a fixed annual rate of 3.125% for the first five years, and will reset quarterly thereafter to the then current three-month Secured Overnight Financing Rate (“SOFR”) plus 237.5 basis points. The Notes due in 2031 are redeemable beginning July 15, 2026 and quarterly thereafter on any interest payment date.

In December 2021, Nicolet assumed two subordinated note issuances at a premium as the result of an acquisition. One issuance was $30 million in fixed-to-floating rate subordinated notes due in 2028, with a fixed annual interest rate of 5.875% for the first five years, and will reset quarterly thereafter to the then current three-month LIBOR plus 2.88% The second issuance was $22 million in fixed-to-floating rate subordinated notes due in 2030, with a fixed annual interest rate of 7.00% for the first five years, and will reset quarterly thereafter to the then current SOFR plus 687.5 basis points. The Notes due in 2028 are redeemable beginning June 1, 2023, and quarterly thereafter on any interest payment date, while the Notes due in 2030 are redeemable beginning June 30, 2025, and quarterly thereafter on any interest payment date. All Notes qualify as Tier 2 capital for regulatory purposes.

24

The following table shows the breakdown of junior subordinated debentures and subordinated notes.

		As of March 31, 2023								As of December 31, 2022
(in thousands)	Maturity Date	Interest  Rate		Par		Unamortized Premium /(Discount) / Debt Issue Costs (1)		Carrying Value		Interest  Rate		Carrying Value
Junior Subordinated Debentures:
Mid-Wisconsin Statutory Trust I (2)	12/15/2035	6.30	%	$	10,310	$	(2,527)	$	7,783	6.20	%	$	7,734
Baylake Capital Trust II (3)	9/30/2036	6.51	%	16,598		(3,115)		13,483		6.08	%	13,424
First Menasha Statutory Trust (4)	3/17/2034	7.70	%	5,155		(476)		4,679		7.53	%	4,668
County Bancorp Statutory Trust II (5)	9/15/2035	6.40	%	6,186		(870)		5,316		6.30	%	5,277
County Bancorp Statutory Trust III (6)	6/15/2036	6.56	%	6,186		(928)		5,258		6.46	%	5,219
Fox River Valley Capital Trust (7)	5/30/2033	6.40	%	3,610		(201)		3,409		6.40	%	3,398
Total				$	48,045	$	(8,117)	$	39,928			$	39,720
Subordinated Notes:
Subordinated Notes due 2031	7/15/2031	3.13	%	$	100,000	$	(681)	$	99,319	3.13	%	$	99,267
County Subordinated Notes due 2028	6/1/2028	5.88	%	30,000		49		30,049		5.88	%	30,119
County Subordinated Notes due 2030	6/30/2030	7.00	%	22,400		752		23,152		7.00	%	23,236
Total				$	152,400	$	120	$	152,520			$	152,622

(1) Represents the remaining unamortized premium or discount on debt issuances assumed in acquisitions, and represents the unamortized debt issue costs for the debt issued directly by Nicolet.

(2) The debentures, assumed in April 2013 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.43%, adjusted quarterly.

(3) The debentures, assumed in April 2016 as a result of an acquisition, have a floating rate of three-month LIBOR plus 1.35%, adjusted quarterly.

(4) The debentures, assumed in April 2017 as the result of an acquisition, have a floating rate of three-month LIBOR plus 2.79%, adjusted quarterly.

(5) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.53%, adjusted quarterly.

(6) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.69%, adjusted quarterly.

(7) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of 5-year swap rate plus 3.40%, which resets every five years.

Note 9 – Commitments and Contingencies

The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, financial guarantees, and standby letters of credit. Such commitments may involve, to varying degrees, elements of credit risk in excess of amounts recognized on the consolidated balance sheets. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instruments for commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and issuing letters of credit as they do for on-balance sheet financial instruments. See Note 6 for information on the allowance for credit losses-unfunded commitments.

A summary of the contract or notional amount of the Company’s exposure to off-balance sheet risk was as follows.

(in thousands)	March 31, 2023		December 31, 2022
Commitments to extend credit	$	1,850,215	$	1,850,601
Financial standby letters of credit	23,246		26,530
Performance standby letters of credit	9,952		9,375

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract, and predominantly included commercial lines of credit with a term of one year or less. The commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements.

Financial and performance standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Financial standby letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party, while performance standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party. Both of these guarantees are primarily issued to support public and private

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borrowing arrangements and, generally, have terms of one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Company holds collateral, which may include accounts receivable, inventory, property, equipment, and income-producing properties, supporting those commitments if deemed necessary. In the event the customer does not perform in accordance with the terms of the agreement with the third-party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount. If the commitment is funded, the Company would be entitled to seek recovery from the customer.

Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans held for sale are considered derivative instruments (“mortgage derivatives”) and the contractual amounts were $18 million and $17 million, respectively, at March 31, 2023. In comparison, interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans held for sale totaled $9 million and $9 million, respectively, at December 31, 2022. The net fair value of these mortgage derivatives combined was a net gain of $0.1 million at both March 31, 2023 and December 31, 2022.

Nicolet is party to various pending and threatened claims and legal proceedings arising in the normal course of business activities, some of which may involve claims for substantial amounts. Although Nicolet has developed policies and procedures to minimize legal noncompliance and the impact of claims and other proceedings and endeavored to procure reasonable amounts of insurance coverage, litigation and regulatory actions present an ongoing risk. With respect to all such claims, Nicolet continuously assesses its potential liability based on the allegations and evidence available. If the facts indicate that it is probable that Nicolet will incur a loss and the amount of such loss can be reasonably estimated, Nicolet will establish an accrual for the probable loss. For matters where a loss is not probable, or the amount of the loss cannot be reasonably estimated, Nicolet does not establish an accrual.

Future developments could result in an unfavorable outcome for or resolution of any one or more of the legal proceedings in which Nicolet is a defendant, which may be material to Nicolet’s business or consolidated results of operations or financial condition for a particular fiscal period or periods. Although it is not possible to predict the outcomes of any of these legal proceedings or the range of possible loss, if any, based on the most recent information available, advice of counsel and available insurance coverage, if applicable, management believes that any liability resulting from such proceedings would not have a material adverse effect on our financial position or results of operations.

Note 10 – Fair Value Measurements

Fair value represents the estimated price at which an orderly transaction to sell an asset or transfer a liability would take place between market participants at the measurement date under current market conditions (i.e., an exit price concept), and is a market-based measurement versus an entity-specific measurement. The Company records and/or discloses certain financial instruments on a fair value basis. These financial assets and financial liabilities are measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observability of the assumptions used to determine fair value. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from independent sources. Unobservable inputs are inputs that reflect assumptions of the reporting entity about how market participants would price the asset or liability based on the best information available under the circumstances. The three fair value levels are:

•Level 1 – quoted market prices in active markets for identical assets or liabilities that a company has the ability to access at the measurement date

•Level 2 – inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly

•Level 3 – significant unobservable inputs for the asset or liability, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity

In instances where the fair value measurement is based on inputs from different levels, the level within which the entire fair value measurement will be categorized is based on the lowest level input that is significant to the fair value measurement in its entirety. This assessment of the significance of an input requires management judgment.

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Recurring basis fair value measurements:

The following table presents the balances of assets and liabilities measured at fair value on a recurring basis for the periods presented.

(in thousands)			Fair Value Measurements Using
Measured at Fair Value on a Recurring Basis:	Total		Level 1		Level 2		Level 3
March 31, 2023
U.S. Treasury securities	$	186,108	$	—	$	186,108	$	—
U.S. government agency securities	9,970		—		9,970		—
State, county and municipals	397,448		—		395,579		1,869
Mortgage-backed securities	311,621		—		310,638		983
Corporate debt securities	118,029		—		112,726		5,303
Securities AFS	$	1,023,176	$	—	$	1,015,021	$	8,155
Other investments (equity securities)	$	3,912	$	3,912	$	—	$	—
December 31, 2022
U.S. Treasury securities	$	183,830	$	—	$	183,830	$	—
U.S. government agency securities	2,100		—		2,100		—
State, county and municipals	398,188		—		396,315		1,873
Mortgage-backed securities	200,932		—		199,951		981
Corporate debt securities	132,568		—		127,269		5,299
Securities AFS	$	917,618	$	—	$	909,465	$	8,153
Other investments (equity securities)	$	4,376	$	4,376	$	—	$	—

The following is a description of the valuation methodologies used by the Company for the assets and liabilities measured at fair value on a recurring basis, noted in the tables above. Where quoted market prices on securities exchanges are available, the investments are classified as Level 1. Level 1 investments primarily include exchange-traded equity securities. If quoted market prices are not available, fair value is generally determined using prices obtained from independent pricing vendors who use pricing models (with typical inputs including benchmark yields, reported trades for similar securities, issuer spreads or relationship to other benchmark quoted securities), or discounted cash flows, and are classified as Level 2. Examples of these investments include U.S. Treasury securities, U.S. government agency securities, mortgage-backed securities, obligations of state, county and municipals, and certain corporate debt securities. Finally, in certain cases where there is limited activity or less transparency around inputs to the estimated fair value, investments are classified within Level 3 of the hierarchy. Examples of these include private corporate debt securities, which are primarily trust preferred security investments, as well as certain municipal bonds and mortgage-backed securities. At March 31, 2023 and December 31, 2022, it was determined that carrying value was the best approximation of fair value for these Level 3 securities, based primarily on the internal analysis on these securities.

The following table presents the changes in Level 3 securities AFS measured at fair value on a recurring basis.

	Three Months Ended		Year Ended
Level 3 Fair Value Measurements:	March 31, 2023		December 31, 2022
Balance at beginning of year	$	8,153	$	8,065
Acquired balance	—		750
Maturities / Paydowns	—		(451)
Unrealized gain / (loss)	2		(211)
Balance at end of period	$	8,155	$	8,153

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Nonrecurring basis fair value measurements:

The following table presents the Company’s assets measured at fair value on a nonrecurring basis, aggregated by level in the fair value hierarchy within which those measurements fall.

(in thousands)			Fair Value Measurements Using
Measured at Fair Value on a Nonrecurring Basis:	Total		Level 1		Level 2		Level 3
March 31, 2023
Collateral dependent loans	$	31,220	$	—	$	—	$	31,220
Other real estate owned (“OREO”)	1,975		—		—		1,975
MSR asset	12,544		—		—		12,544
December 31, 2022
Collateral dependent loans	$	30,951	$	—	$	—	$	30,951
OREO	1,975		—		—		1,975
MSR asset	12,580		—		—		12,580

The following is a description of the valuation methodologies used by the Company for the items noted in the table above. For collateral dependent loans, the estimated fair value is based upon the present value of expected future cash flows discounted at the loan’s effective interest rate, the estimated fair value of the underlying collateral with consideration for estimated selling costs if satisfaction of the loan depends on the sale of the collateral, or the estimated liquidity of the note. For OREO, the fair value is based upon the estimated fair value of the underlying collateral adjusted for the expected costs to sell. To estimate the fair value of the MSR asset, the underlying serviced loan pools are stratified by interest rate tranche and term of the loan, and a valuation model is used to calculate the present value of the expected future cash flows for each stratum. The servicing valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as costs to service, a discount rate, ancillary income, default rates and losses, and prepayment speeds. Although some of these assumptions are based on observable market data, other assumptions are based on unobservable estimates of what market participants would use to measure fair value.

Financial instruments:

The carrying amounts and estimated fair values of the Company’s financial instruments are shown below.

March 31, 2023
(in thousands)	Carrying Amount		Estimated Fair Value		Level 1		Level 2		Level 3
Financial assets:
Cash and cash equivalents	$	114,180	$	114,180	$	114,180	$	—	$	—
Certificates of deposit in other banks	11,293		11,181		—		11,181		—
Securities AFS	1,023,176		1,023,176		—		1,015,021		8,155
Other investments, including equity securities	57,482		57,482		3,912		42,982		10,588
Loans held for sale	4,962		5,057		—		5,057		—
Loans, net	6,161,320		5,962,242		—		—		5,962,242
MSR asset	12,544		17,708		—		—		17,708
Accrued interest receivable	21,796		21,796		21,796		—		—
Financial liabilities:
Deposits	$	6,928,579	$	6,918,140	$	—	$	—	$	6,918,140
Short-term borrowings	50,000		50,000		—		50,000		—
Long-term borrowings	197,448		188,203		—		4,855		183,348
Accrued interest payable	4,219		4,219		4,219		—		—

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December 31, 2022
(in thousands)	Carrying Amount		Estimated Fair Value		Level 1		Level 2		Level 3
Financial assets:
Cash and cash equivalents	$	154,723	$	154,723	$	154,723	$	—	$	—
Certificates of deposit in other banks	12,518		12,407		—		12,407		—
Securities AFS	917,618		917,618		—		909,465		8,153
Securities HTM	679,128		623,352		—		623,352		—
Other investments, including equity securities	65,286		65,286		4,376		52,093		8,817
Loans held for sale	1,482		1,529		—		1,529		—
Loans, net	6,118,670		5,863,570		—		—		5,863,570
MSR asset	12,580		17,215		—		—		17,215
Accrued interest receivable	21,275		21,275		21,275		—		—
Financial liabilities:
Deposits	$	7,178,921	$	7,172,779	$	—	$	—	$	7,172,779
Short-term borrowings	317,000		317,000		317,000		—		—
Long-term borrowings	225,342		220,513		—		33,001		187,512
Accrued interest payable	4,265		4,265		4,265		—		—

The valuation methodologies for the financial instruments disclosed in the above table are described in Note 18, Fair Value Measurements, in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

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

Nicolet Bankshares, Inc. (the “Company” or “Nicolet”) is a bank holding company headquartered in Green Bay, Wisconsin. Nicolet provides a diversified range of traditional banking and wealth management services to individuals and businesses in its market area and through the branch offices of its banking subsidiary, Nicolet National Bank (the “Bank”), in Wisconsin, Michigan, and Minnesota. In this Quarterly Report on Form 10-Q, unless the context indicates otherwise, all references to “we,” “us” and “our” refer to the Company.

Forward-Looking Statements

Statements made in this document and in any documents that are incorporated by reference which are not purely historical are forward-looking statements, as defined in the Private Securities Litigation Reform Act of 1995, including any statements regarding descriptions of management’s plans, objectives, or goals for future operations, products or services, and forecasts of its revenues, earnings, or other measures of performance. Forward-looking statements are based on current management expectations and, by their nature, are subject to risks and uncertainties. These statements are neither statements of historical fact nor assurance of future performance and generally may be identified by the use of words such as “believe,” “expect,” “anticipate,” “plan,” “estimate,” “should,” “will,” “intend,” or similar expressions. Forward-looking statements include discussions of strategy, financial projections, guidance and estimates (including their underlying assumptions), statements regarding plans, objectives, expectations or consequences of various transactions or events, and statements about our future performance, operations, products and services, and should be viewed with caution. Shareholders should note that many factors, some of which are discussed elsewhere in this document, could affect the future financial results of Nicolet and could cause those results to differ materially from those implied or anticipated by the statements. Except as required by law, we expressly disclaim any obligations to publicly update any forward-looking statements whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise. Important factors, many of which are beyond Nicolet’s control, that could cause our actual results and financial condition to differ materially from those indicated in the forward-looking statements, in addition to those described in detail under Item 1A, “Risk Factors” of Nicolet’s 2022 Annual Report on Form 10-K include, but are not necessarily limited to the following:

•operating, legal and regulatory risks, including the effects of legislative or regulatory developments affecting the financial industry generally or Nicolet specifically;

•our ability to maintain liquidity, primarily through deposits, in light of recent events in the banking industry;

•economic, market, political and competitive forces affecting Nicolet’s banking and wealth management businesses;

•changes in interest rates, monetary policy and general economic conditions, which may impact Nicolet’s net interest income;

•potential difficulties in identifying and integrating the operations of future acquisition targets with those of Nicolet;

•the impact of purchase accounting with respect to our merger activities, or any change in the assumptions used regarding the assets purchased and liabilities assumed to determine their fair value;

•cybersecurity risks and the vulnerability of our network and online banking portals, and the systems or parties with whom we contract, to unauthorized access, computer viruses, phishing schemes, spam attacks, human error, natural disasters, power loss and other security breaches that could adversely affect our business and financial performance or reputation;

•changes in accounting standards, rules and interpretations and the related impact on Nicolet’s financial statements;

•compliance or operational risks related to new products, services, ventures, or lines of business, if any, that Nicolet may pursue or implement;

•changes in monetary and tax policies;

•changes occurring in business conditions and inflation and the possibility of a recession;

•our ability to attract and retain key personnel;

•examinations by our regulatory authorities, including the possibility that the regulatory authorities may, among other things, require us to increase our allowance for credit losses, write-down assets, or take other actions;

•risks associated with actual or potential information gatherings, investigations or legal proceedings by customers, regulatory agencies or others;

•the potential effects of events beyond our control that may have a destabilizing effect on financial markets and the economy, such as weather events, natural disasters, epidemics and pandemics (including COVID-19), war or terrorist activities, disruptions in our customers’ supply chains, disruptions in transportation, essential utility outages or trade disputes and related tariffs;

•each of the factors and risks under Item 1A, “Risk Factors” of Nicolet’s 2022 Annual Report on Form 10-K and in subsequent filings we make with the SEC; and

•the risk that Nicolet’s analysis of these risks and forces could be incorrect and/or that the strategies developed to address them could be unsuccessful.

These factors should be considered in evaluating the forward-looking statements, and you should not place undue reliance on such statements.

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Overview

The following discussion is management’s analysis of the consolidated financial condition as of March 31, 2023 and December 31, 2022 and results of operations for the three-month periods ended March 31, 2023 and 2022. It should be read in conjunction with Nicolet’s audited consolidated financial statements included in Nicolet’s 2022 Annual Report on Form 10-K.

Our financial performance and certain balance sheet line items were impacted by the timing and size of our acquisition of Charter Bankshares, Inc. (“Charter”) on August 26, 2022. Certain income statement results, average balances and related ratios include partial contributions from Charter from the acquisition date. Additional information on our acquisition activity is included in Note 2, “Acquisition” in the Notes to Unaudited Consolidated Financial Statements, under Part I, Item 1.

Economic Outlook and Recent Industry Developments

The current economic outlook is highly uncertain. A strong labor market is contributing to continuing positive economic activity and demand for goods and services; however, certain sectors are beginning to show signs of weakening. Real estate and manufacturing are slowing. Unemployment rates have not increased despite the significant increase in interest rates by the Federal Reserve to combat inflation (from a target range of 0.00%-0.25% in early March 2022 to 4.75%-5.00% at the end of March 2023). Many economists are anticipating a mild recession over the next year, but the long-term outlook is still positive as entrepreneurial activity remains strong.

During first quarter 2023, the banking industry experienced significant volatility with high-profile bank failures and industry wide concerns related to liquidity, deposit outflows, unrealized securities losses, and eroding consumer confidence in the banking system. Despite these negative industry developments, Nicolet strengthened its balance sheet and maintained a solid liquidity position. During first quarter 2023, the Company sold $500 million in held to maturity securities and used the net proceeds to reduce wholesale funding, which repositioned the balance sheet for future growth. This reduction in wholesale funding also enhanced the Company’s already strong liquidity position.

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Table 1: Earnings Summary and Selected Financial Data

	At or for the Three Months Ended
(In thousands, except per share data)	3/31/2023			12/31/2022			9/30/2022			6/30/2022			3/31/2022
Results of operations:
Net interest income	$	56,721		$	68,092		$	62,990		$	55,084		$	53,795
Provision for credit losses	3,090			1,850			8,600			750			300
Noninterest income	(21,844)			14,846			13,000			14,131			15,943
Noninterest expense	44,875			43,989			42,567			36,538			37,550
Income (loss) before income tax expense	(13,088)			37,099			24,823			31,927			31,888
Income tax expense (benefit)	(4,190)			9,498			6,313			7,942			7,724
Net income (loss)	$	(8,898)		$	27,601		$	18,510		$	23,985		$	24,164
Earnings (loss) per common share:
Basic	$	(0.61)		$	1.88		$	1.33		$	1.79		$	1.77
Diluted	$	(0.61)		$	1.83		$	1.29		$	1.73		$	1.70
Common Shares:
Basic weighted average	14,694			14,685			13,890			13,402			13,649
Diluted weighted average	14,694			15,110			14,310			13,852			14,215
Outstanding (period end)	14,698			14,691			14,673			13,407			13,457
Period-End Balances:
Loans	$	6,223,732		$	6,180,499		$	5,984,437		$	4,978,654		$	4,683,315
Allowance for credit losses - loans	62,412			61,829			60,348			50,655			49,906
Total assets	8,192,354			8,763,969			8,895,916			7,370,252			7,320,212
Deposits	6,928,579			7,178,921			7,395,902			6,286,266			6,231,120
Stockholders’ equity (common)	961,792			972,529			938,463			839,387			836,310
Book value per common share	65.44			66.20			63.96			62.61			62.15
Tangible book value per common share (2)	38.20			38.81			36.21			37.49			37.03
Financial Ratios: (1)
Return on average assets	(0.42)		%	1.26		%	0.93		%	1.32		%	1.30		%
Return on average common equity	(3.72)			11.47			8.25			11.48			11.38
Return on average tangible common equity (2)	(6.34)			19.85			13.93			19.21			18.75
Stockholders’ equity to assets	11.74			11.10			10.55			11.39			11.42
Tangible common equity to tangible assets (2)	7.21			6.82			6.26			7.15			7.14
Reconciliation of Non-GAAP Financial Measures:
Adjusted net income (loss) reconciliation: (3)
Net income (loss) (GAAP)	$	(8,898)		$	27,601		$	18,510		$	23,985		$	24,164
Adjustments:
Provision expense (4)	2,340			—			8,000			—			—
Assets (gains) losses, net	38,468			(260)			46			(1,603)			(1,313)
Merger-related expense	163			492			519			555			98
Adjustments subtotal	40,971			232			8,565			(1,048)			(1,215)
Tax on Adjustments (25% effective tax rate)	10,243			58			2,141			(262)			(304)
Adjustments, net of tax	30,728			174			6,424			(786)			(911)
Core banking operations / Adjusted net income (Non-GAAP)	$	21,830		$	27,775		$	24,934		$	23,199		$	23,253
Adjusted diluted earnings per common share (Non-GAAP)	$	1.45		$	1.84		$	1.74		$	1.67		$	1.64
Tangible assets: (2)
Total assets	$	8,192,354		$	8,763,969		$	8,895,916		$	7,370,252		$	7,320,212
Goodwill and other intangibles, net	400,277			402,438			407,117			336,721			338,068
Tangible assets	$	7,792,077		$	8,361,531		$	8,488,799		$	7,033,531		$	6,982,144
Tangible common equity: (2)
Stockholders’ equity (common)	$	961,792		$	972,529		$	938,463		$	839,387		$	836,310
Goodwill and other intangibles, net	400,277			402,438			407,117			336,721			338,068
Tangible common equity	$	561,515		$	570,091		$	531,346		$	502,666		$	498,242
Tangible average common equity: (2)
Average stockholders’ equity (common)	$	970,108		$	954,970		$	890,205		$	837,975		$	861,319
Average goodwill and other intangibles, net	401,212			403,243			363,211			337,289			338,694
Average tangible common equity	$	568,896		$	551,727		$	526,994		$	500,686		$	522,625

(1) Income statement-related ratios for partial-year periods are annualized.

(2) The ratios of tangible book value per common share, return on average tangible common equity, and tangible common equity to tangible assets are non-GAAP financial measures that exclude goodwill and other intangibles, net. These financial ratios have been included as management considers them to be useful metrics with which to analyze and evaluate our financial condition and capital strength. See section “Non-GAAP Financial Measures” below.

(3) The adjusted net income / core banking operations measure is a non-GAAP financial measure that provides information that management believes is useful to investors in understanding our operating performance and trends and also aids investors in the comparison of our financial performance to the financial performance of peer banks. See section “Non-GAAP Financial Measures” below.

(4) Provision expense for 2023 is attributable to the expected loss on our investment in Signature Bank sub debt, and the provision expense for 2022 is attributable to the Day 2 allowance from the acquisition of Charter.

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Non-GAAP Financial Measures

We identify “tangible book value per common share,” “return on average tangible common equity,” “tangible common equity to tangible assets” “adjusted net income / core banking operations,” and “adjusted diluted earnings per common share” as “non-GAAP financial measures.” In accordance with the SEC’s rules, we identify certain financial measures as non-GAAP financial measures if such financial measures exclude or include amounts in the most directly comparable measures calculated and presented in accordance with generally accepted accounting principles (“GAAP”) in effect in the United States in our statements of income, balance sheets or statements of cash flows. Non-GAAP financial measures do not include operating and other statistical measures, ratios or statistical measures calculated using exclusively financial measures calculated in accordance with GAAP.

Management believes that the presentation of these non-GAAP financial measures (a) are important metrics used to analyze and evaluate our financial condition and capital strength and provide important supplemental information that contributes to a proper understanding of our operating performance and trends, (b) enables a more complete understanding of factors and trends affecting our business, and (c) allows investors to compare our financial performance to the financial performance of our peers and to evaluate our performance in a manner similar to management, the financial services industry, bank stock analysts, and bank regulators. Management uses non-GAAP measures as follows: in the preparation of our operating budgets, monthly financial performance reporting, and in our presentation to investors of our performance. However, we acknowledge that these non-GAAP financial measures have a number of limitations. Limitations associated with non-GAAP financial measures include the risk that persons might disagree as to the appropriateness of items comprising these measures and that different companies might calculate these measures differently. These disclosures should not be considered an alternative to our GAAP results. A reconciliation of non-GAAP financial measures to the most directly comparable GAAP financial measures is presented in the table above.

Performance Summary

Nicolet recognized a net loss of $9 million (or loss per diluted common share of $0.61) for first quarter 2023, compared to net income of $28 million (or earnings per diluted common share of $1.83) for fourth quarter 2022, and net income of $24 million (or earnings per diluted common share of $1.70) for first quarter 2022.

Core banking operations (or adjusted net income (Non-GAAP)) earned $22 million on growth in loans and wealth management fee revenue. Asset quality continued to be very good as nonperforming assets were 0.50% of total assets. Net income reflected non-core items and the related tax effect of each, including U.S. Treasury securities sale loss, expected loss (provision expense) on the Signature Bank sub debt investment (acquired in an acquisition), merger-related expenses, Day 2 credit provision expense required under the CECL model, as well as gains / (losses) on other assets and investments. These non-core items negatively impacted earnings per diluted common share $2.06 for first quarter 2023 and $0.01 for fourth quarter 2022, and positively impacted earnings per diluted common share $0.06 for first quarter 2022.

On March 7, 2023, Nicolet executed the sale of $500 million (par value) U.S. Treasury held to maturity securities for a pre-tax loss of $38 million or an after-tax loss of $28 million to reposition the balance sheet for future growth. The $500 million portfolio yielded approximately 88 bps with scheduled maturities in 2024 and 2025 (or average duration of 2 years). Proceeds from the sale were used to reduce existing FHLB borrowings with the remainder held in investable cash. The following table summarizes the estimated annual impact of this balance sheet repositioning.

Sale Metrics	$ in Millions		Assumptions
Loss on sale of U.S.Treasury securities	$	(37,723)	Sale of $500 million U.S. Treasury securities yielding 88 bps
Lost interest from U.S. Treasury securities	$	(4,380)	Assumes $500 million at 88 bps
Lower interest expense on FHLB borrowings	17,128		Assumes $377 million at 456 bps (at time of sale)
Interest income from investable cash	3,905		Assumes $83 million at 465 bps (at time of sale)
Projected net impact from repositioning	$	16,653
Estimated earn back (in years)	2.26

As a result of the sale of securities previously classified as held to maturity, the remaining unsold portfolio of held to maturity securities, with a book value of $177 million, was reclassified to available for sale with a carrying value of approximately $157 million. The unrealized loss on this portfolio of $20 million increased the balance of accumulated other comprehensive loss (AOCI) $15 million, net of the deferred tax effect, and is subject to future market changes.

•At March 31, 2023, assets were $8.2 billion, a decrease of $572 million (7%) from December 31, 2022, mostly in investment securities due to the balance sheet repositioning. Compared to March 31, 2022, assets increased $872 million (12%) due to the acquisition of Charter as well as strong organic loan growth.

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•At March 31, 2023, loans were $6.2 billion, an increase of $43 million (3% annualized) from December 31, 2022. Compared to March 31, 2022, loans increased $1.5 billion (33%), largely due to the Charter acquisition and strong organic loan growth. For additional information regarding loans, see “BALANCE SHEET ANALYSIS — Loans.”

•Total deposits were $6.9 billion at March 31, 2023, down $250 million from December 31, 2022, mostly in noninterest-bearing demand deposits. Compared to March 31, 2022, deposits increased $697 million (11%), largely due to the Charter acquisition. For additional information regarding deposits, see “BALANCE SHEET ANALYSIS – Deposits.”

•The net interest margin was 2.91% for first quarter 2023, 32 bps lower than the comparable 2022 period. The favorable increase in the earning asset yield of 101 bps, was more than offset by a 195 bps increase in the cost of funds, and the net free funds improved 62 bps. Net interest income increased $2.9 million (5%) over first quarter 2022, including a $29.5 million increase in interest income offset by a $26.5 million increase in interest expense. For additional information regarding net interest income, see “INCOME STATEMENT ANALYSIS — Net Interest Income.”

•Noninterest income was a negative $21.8 million for first quarter 2023, a $37.8 million unfavorable change compared to first quarter 2022. Excluding net asset gains (losses), noninterest income for first quarter 2023 was $16.6 million, a $2.0 million increase over first quarter 2022. For additional information regarding noninterest income, see “INCOME STATEMENT ANALYSIS — Noninterest Income.”

•Noninterest expense was $44.9 million for first quarter 2023, an increase of $7.3 million (20%) over first quarter 2022. Personnel costs increased $3.1 million (15%), while non-personnel expenses combined increased $4.2 million (26%) compared to first quarter 2022. For additional information regarding noninterest expense, see “INCOME STATEMENT ANALYSIS — Noninterest Expense.”

INCOME STATEMENT ANALYSIS

Net Interest Income

Tax-equivalent net interest income is a non-GAAP measure, but is a preferred industry measurement of net interest income (and its use in calculating a net interest margin) as it enhances the comparability of net interest income arising from taxable and tax-exempt sources. The tax-equivalent adjustments bring tax-exempt interest to a level that would yield the same after-tax income by applying the effective Federal corporate tax rates to the underlying assets. Tables 2 and 3 present information to facilitate the review and discussion of selected average balance sheet items, tax-equivalent net interest income, interest rate spread and net interest margin.

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Table 2: Average Balance Sheet and Net Interest Income Analysis - Tax-Equivalent Basis

	For the Three Months Ended March 31,
	2023						2022
(in thousands)	Average Balance		Interest		Average Yield/Rate		Average Balance		Interest		Average Yield/Rate
ASSETS
Interest-earning assets
Commercial-based loans	$	5,145,341	$	65,512	5.09	%	$	3,920,744	$	43,197	4.41	%
Retail-based loans	1,056,439		13,674		5.18	%	768,040		8,137		4.24	%
Total loans, including loan fees (1)(2)	6,201,780		79,186		5.11	%	4,688,784		51,334		4.38	%
Investment securities:
Taxable	1,224,395		4,961		1.63	%	1,386,593		5,127		1.48	%
Tax-exempt (2)	284,140		2,285		3.22	%	189,031		1,031		2.18	%
Total investment securities	1,508,535		7,246		1.93	%	1,575,624		6,158		1.57	%
Other interest-earning assets	120,275		1,536		5.11	%	446,783		817		0.73	%
Total non-loan earning assets	1,628,810		8,782		2.16	%	2,022,407		6,975		1.38	%
Total interest-earning assets	7,830,590		$	87,968	4.49	%	6,711,191		$	58,309	3.48	%
Other assets, net	740,033						808,445
Total assets	$	8,570,623					$	7,519,636
LIABILITIES AND STOCKHOLDERS’ EQUITY
Interest-bearing liabilities
Savings	$	888,979	$	2,365	1.08	%	$	821,452	$	105	0.05	%
Interest-bearing demand	985,778		3,339		1.37	%	1,052,076		701		0.27	%
Money market accounts (“MMA”)	1,847,701		11,190		2.46	%	1,540,506		323		0.09	%
Core time deposits	602,882		2,693		1.81	%	595,864		508		0.35	%
Total interest-bearing core deposits	4,325,340		19,587		1.84	%	4,009,898		1,637		0.17	%
Brokered deposits	566,282		5,350		3.83	%	459,460		555		0.49	%
Total interest-bearing deposits	4,891,622		24,937		2.07	%	4,469,358		2,192		0.20	%
Other interest-bearing liabilities	499,485		5,718		4.58	%	214,557		1,931		3.60	%
Total interest-bearing liabilities	5,391,107		30,655		2.30	%	4,683,915		4,123		0.35	%
Noninterest-bearing demand	2,168,640						1,923,186
Other liabilities	40,768						51,216
Stockholders’ equity	970,108						861,319
Total liabilities and stockholders’ equity	$	8,570,623					$	7,519,636
Net interest income and rate spread			$	57,313	2.19	%			$	54,186	3.13	%
Tax-equivalent adjustment & net free funds			592		0.72	%			391		0.10	%
Net interest income and net interest margin			$	56,721	2.91	%			$	53,795	3.23	%

(1)Nonaccrual loans and loans held for sale are included in the daily average loan balances outstanding.

(2)The yield on tax-exempt loans and tax-exempt investment securities is computed on a tax-equivalent basis using a federal tax rate of 21% and adjusted for the disallowance of interest expense.

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Table 3: Volume/Rate Variance - Tax-Equivalent Basis

	For the Three Months Ended March 31, 2023 Compared to March 31, 2022:
	Increase (Decrease) Due to Changes in
(in thousands)	Volume		Rate		Net (1)
Interest-earning assets
Commercial-based loans	$	14,894	$	7,421	$	22,315
Retail-based loans	3,481		2,056		5,537
Total loans, including loan fees (2) (3)	18,375		9,477		27,852
Investment securities:
Taxable	(1,243)		1,077		(166)
Tax-exempt (3)	646		608		1,254
Total investment securities	(597)		1,685		1,088
Other interest-earning assets	(100)		819		719
Total non-loan earning assets	(697)		2,504		1,807
Total interest-earning assets	$	17,678	$	11,981	$	29,659
Interest-bearing liabilities
Savings	$	9	$	2,251	$	2,260
Interest-bearing demand	(41)		2,679		2,638
MMA	78		10,789		10,867
Core time deposits	6		2,179		2,185
Total interest-bearing core deposits	52		17,898		17,950
Brokered deposits	158		4,637		4,795
Total interest-bearing deposits	210		22,535		22,745
Other interest-bearing liabilities	3,143		644		3,787
Total interest-bearing liabilities	3,353		23,179		26,532
Net interest income	$	14,325	$	(11,198)	$	3,127

(1)The change in interest due to both rate and volume has been allocated in proportion to the relationship of dollar amounts of change in each.

(2)Nonaccrual loans and loans held for sale are included in the daily average loan balances outstanding.

(3)The yield on tax-exempt loans and tax-exempt investment securities is computed on a tax-equivalent basis using a federal tax rate of 21% and adjusted for the disallowance of interest expense.

The Federal Reserve raised short-term interest rates a total of 425 bps during 2022, increasing the Federal Funds rate to a range of 4.25% to 4.50% as of December 31, 2022. Additional increases totaling 50 bps were made in first quarter 2023, resulting in a Federal Funds range of 4.75% to 5.00% as of March 31, 2023.

Tax-equivalent net interest income was $57 million for first quarter 2023, an increase of $3 million (6%) over first quarter 2022). The $3 million increase in tax-equivalent net interest income was attributable to net favorable volumes (which added $14 million to net interest income, mostly from the Charter acquisition and solid loan growth) and net unfavorable rates (which decreased net interest income $11 million from higher deposit costs and the lag in repricing the loan portfolio to current market interest rates).

Average interest-earning assets increased to $7.8 billion, up $1.1 billion (17%) over the comparable 2022 period, primarily due to the timing of the acquisition of Charter. Between the comparable three-month periods, average loans increased $1.5 billion (32%), mostly due to timing of the Charter acquisition (which added loans of $827 million at acquisition) and strong organic loan growth throughout 2022. Average investment securities decreased $67 million between the comparable three-month periods, while other interest-earning assets declined $327 million, mostly due to lower cash. As a result, the mix of average interest-earning assets shifted to 79% loans, 19% investments and 2% other interest-earning assets (mostly cash) for first quarter 2023, compared to 70%, 23% and 7%, respectively, for first quarter 2022.

Average interest-bearing liabilities were $5.4 billion for first quarter 2023, an increase of $707 million (15%) over first quarter 2022, primarily due to the timing of the acquisition of Charter. Average interest-bearing core deposits increased $315 million and average brokered deposits increased $107 million between the comparable three-month periods, reflecting the impact of the Charter acquisition and brokered funding to support the strong loan growth. Other interest-bearing liabilities increased $285 million between the comparable first quarter periods, partly due to wholesale funding acquired with Charter and partly due to FHLB borrowings to support the strong loan growth. The mix of average interest-bearing liabilities was 80% core deposits, 11% brokered deposits and 9% wholesale funding for the first quarter 2023, compared to 86%, 10%, and 4%, respectively, for the first quarter 2022.

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The interest rate spread decreased 94 bps between the comparable first quarter periods, as our liabilities have repriced faster than our assets in the rapidly rising interest rate environment. The interest-earning asset yield increased 101 bps to 4.49% for the first three months of 2023, primarily due to the changing mix of interest-earning assets (mostly the reduction in cash noted above). The loan yield improved 73 bps to 5.11% between the comparable three-month periods, largely due to the repricing of new and renewed loans in a rising interest rate environment, while the yield on investment securities increased 36 bps to 1.93%. The cost of funds increased 195 bps to 2.30% for first quarter 2023, also reflecting the rising interest rate environment, a migration of customer deposits into higher rate deposit products, and a shift in the mix of interest-bearing liabilities (mostly the increase in wholesale funding noted above). The contribution from net free funds increased 62 bps, mostly due to the higher value in the rising interest rate environment. As a result, the tax-equivalent net interest margin was 2.91% for first quarter 2023, down 32 bps compared to 3.23% for first quarter 2022.

Tax-equivalent interest income was $88 million for first quarter 2023, up $30 million from first quarter 2022, comprised of $18 million higher volumes and $12 million higher average rates. Interest income on loans increased $28 million over first quarter 2022, mostly due to higher average balances from the Charter acquisition and strong organic loan growth. Interest expense increased to $31 million for first quarter 2023, up $27 million compared to first quarter 2022, comprised of $23 million higher overall cost of funds and $3 million higher volumes. Interest expense on deposits increased $23 million from first quarter 2022 mostly due to a much higher interest rate environment. Interest expense on wholesale funding increased between the comparable three-month periods, mostly due to higher average balances.

Provision for Credit Losses

The provision for credit losses was $3.1 million for the three months ended March 31, 2023 (comprised of $0.8 million related to the ACL-Loans and $2.3 million for the ACL on securities AFS), compared to $0.3 million for the three months ended March 31, 2022 (all related to the ACL-Loans). The provision for credit losses on loans was attributable to growth and changes in the underlying loan portfolio, while the provision for credit losses on securities AFS was due to the expected loss on our Signature Bank sub debt investment which was fully charged-off during first quarter 2023.

The provision for credit losses is predominantly a function of Nicolet’s methodology and judgment as to qualitative and quantitative factors used to determine the appropriateness of the ACL. The appropriateness of the ACL-Loans is affected by changes in the size and character of the loan portfolio, changes in levels of collateral dependent and other nonperforming loans, historical losses and delinquencies in each portfolio segment, the risk inherent in specific loans, concentrations of loans to specific borrowers or industries, existing and future economic conditions, the fair value of underlying collateral, and other factors which could affect expected credit losses. The ACL for securities is affected by risk of the underlying issuer, while the ACL for unfunded commitments is affected by many of the same factors as the ACL-Loans, as well as funding assumptions relative to lines of credit. See also Note 6, “Loans, Allowance for Credit Losses - Loans, and Credit Quality” of the Notes to Unaudited Consolidated Financial Statements under Part I, Item 1, for additional disclosures. For additional information regarding asset quality and the ACL-Loans, see “BALANCE SHEET ANALYSIS — Loans,” “— Allowance for Credit Losses - Loans,” and “— Nonperforming Assets.”

Noninterest Income

Table 4: Noninterest Income

	Three Months Ended March 31,
(in thousands)	2023		2022		$ Change		% Change
Trust services fee income	$	2,033	$	2,011	$	22	1	%
Brokerage fee income	3,479		3,688		(209)		(6)
Wealth management fee income	5,512		5,699		(187)		(3)
Mortgage income, net	1,466		3,253		(1,787)		(55)
Service charges on deposit accounts	1,480		1,477		3		—
Card interchange income	3,033		2,581		452		18
BOLI income	1,200		933		267		29
Deferred compensation plan asset market valuations	946		(467)		1,413		(303)
LSR income, net	1,155		(382)		1,537		N/M
Other income	1,832		1,536		296		19
Subtotal	16,624		14,630		1,994		14
Asset gains (losses), net	(38,468)		1,313		(39,781)		N/M
Total noninterest income	$	(21,844)	$	15,943	$	(37,787)	(237)	%
N/M means not meaningful.

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Noninterest income was a negative $21.8 million for the first three months of 2023, an unfavorable change of $37.8 million compared to the first three months of 2022, primarily due to the balance sheet repositioning. Excluding net asset gains (losses), noninterest income for first quarter 2023 was $16.6 million, a $2.0 million (14%) increase over first quarter 2022.

Wealth management fee income was $5.5 million, down $0.2 million (3%) from the first three months of 2022, as unfavorable market-related declines outpaced growth in accounts and assets under management.

Mortgage income represents net gains received from the sale of residential real estate loans into the secondary market, capitalized mortgage servicing rights (“MSR”), servicing fees net of MSR amortization, fair value marks on the mortgage interest rate lock commitments and forward commitments (“mortgage derivatives”), and MSR valuation changes, if any. Net mortgage income of $1.5 million, decreased $1.8 million (55%) between the comparable first quarter periods, mostly due to the rising interest rate environment reducing secondary market volumes and the related gains on sales. See also “Lending-Related Commitments” and Note 7, “Goodwill and Other Intangibles and Servicing Rights” of the Notes to Unaudited Consolidated Financial Statements under Part I, Item 1, for additional disclosures on the MSR asset.

Card interchange income grew $0.5 million (18%) between the comparable three-month periods due to higher volume and activity.

BOLI income was up $0.3 million between the comparable three-month periods, attributable to higher average balances from BOLI acquired with the Charter acquisition.

Loan servicing rights (“LSR”) income increased $1.5 million between the comparable first quarter periods mostly due to lower LSR amortization from the much slower prepayments speeds in the higher interest rate environment. See also Note 7, “Goodwill and Other Intangibles and Servicing Rights” of the Notes to Unaudited Consolidated Financial Statements under Part I, Item 1, for additional information on the LSR asset.

Other income of $1.8 million for the three months ended March 31, 2023 was up $0.3 million from the comparable 2022 period, largely due to broker fees.

Net asset losses of $38.5 million for the first three months of 2023 were primarily attributable to losses on the sale of approximately $500 million (par value) U.S. Treasury held to maturity securities executed in early March as part of a balance sheet repositioning, while net asset gains of $1.3 million for the first three months of 2022 were primarily attributable to gains on sales of other real estate owned (mostly closed bank branch locations).

Noninterest Expense

Table 5: Noninterest Expense

	Three Months Ended March 31,
($ in thousands)	2023		2022		Change		% Change
Personnel	$	24,328	$	21,191	$	3,137	15	%
Occupancy, equipment and office	8,783		6,944		1,839		26
Business development and marketing	2,121		1,831		290		16
Data processing	3,988		3,387		601		18
Intangibles amortization	2,161		1,424		737		52
FDIC assessments	540		480		60		13
Merger-related expense	163		98		65		66
Other expense	2,791		2,195		596		27
Total noninterest expense	$	44,875	$	37,550	$	7,325	20	%
Non-personnel expenses	$	20,547	$	16,359	$	4,188	26	%
Average full-time equivalent (“FTE”) employees	943		833		110		13	%

Noninterest expense was $44.9 million, an increase of $7.3 million (20%) over the first three months of 2022. Personnel costs increased $3.1 million (15%), while non-personnel expenses combined increased $4.2 million (26%) compared to the first three months of 2022.

Personnel expense was $24.3 million for the three months ended March 31, 2023, an increase of $3.1 million from the comparable period in 2022. Salary expense increased $3.0 million (17%) over the first three months of 2022, reflecting higher salaries from the larger employee base (with average full-time equivalent employees up 13%, mostly due to the Charter acquisition), investments in our wealth team, and merit increases between the years, partly offset by lower incentive

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compensation given the current period net loss. Fringe benefits increased $0.1 million (3%) over the first three months of 2022, commensurate with the larger employee base. Salary expense was also impacted by the change in the fair value of nonqualified deferred compensation plan liabilities from the recent market declines. See also “Noninterest Income” for the offsetting fair value change to the nonqualified deferred compensation plan assets.

Occupancy, equipment and office expense was $8.8 million for the first three months of 2023, up $1.8 million (26%) compared to the first three months of 2022, largely due to the expanded branch network with the Charter acquisition, as well as additional expense for software and technology solutions.

Business development and marketing expense was $2.1 million, up $0.3 million (16%) between the comparable first quarter periods, largely attributable to the timing and extent of marketing donations, promotions, and media to support our expanded branch network and community base.

Data processing expense was $4.0 million, up $0.6 million (18%) between the comparable three-month periods, mostly due to volume-based increases in core and card processing charges, partly from the Charter acquisition.

Intangibles amortization increased $0.7 million between the comparable first quarter periods due to higher amortization from the intangibles added with the recent acquisitions.

Other expense was $2.8 million, up $0.6 million (27%) between the comparable three-month periods, mostly due to higher professional fees.

Income Taxes

Income tax was a benefit of $4.2 million (effective tax rate of 32.0%) for the first three months of 2023, compared to expense of $7.7 million (effective tax rate of 24.2%) for the comparable period of 2022. The change in the effective tax rate was largely due to the increase in tax benefits with a pre-tax loss.

BALANCE SHEET ANALYSIS

At March 31, 2023, period end assets were $8.2 billion, a decrease of $572 million (7%) from December 31, 2022, mostly due to the sale of investment securities as part of our balance sheet repositioning. Total loans increased $43 million from December 31, 2022. Total deposits of $6.9 billion at March 31, 2023, decreased $250 million from December 31, 2022, while total borrowings decreased $295 million from December 31, 2022 in FHLB advances. Total stockholders’ equity was $962 million at March 31, 2023, a decrease of $11 million since December 31, 2022, also mostly from the balance sheet repositioning.

Compared to March 31, 2022, assets increased $872 million (12%), largely due to the acquisition of Charter and strong loan growth, partly offset by lower investment securities related to the balance sheet repositioning. Total loans increased $1.5 billion and total deposits increased $697 million from March 31, 2022, also largely due to the acquisition of Charter. Stockholders’ equity increased $125 million from March 31, 2022, primarily due to common stock issued in the Charter acquisition and net income, partially offset by negative net fair value investment changes.

Loans

Nicolet services a diverse customer base throughout Wisconsin, Michigan and Minnesota. We concentrate on originating loans in our local markets and assisting current loan customers. Nicolet actively utilizes government loan programs such as those provided by the U.S. Small Business Administration (“SBA”) and the U.S. Department of Agriculture’s Farm Service Agency (“FSA”).

An active credit risk management process is used to ensure that sound and consistent credit decisions are made. The credit management process is regularly reviewed and has been modified over the past several years to further strengthen the controls. Factors that are important to managing overall credit quality are sound loan underwriting and administration, systematic monitoring of existing loans and commitments, effective loan review on an ongoing basis, early problem loan identification and remedial action to minimize losses, an appropriate ACL-Loans, and sound nonaccrual and charge-off policies.

For additional disclosures on loans, see also Note 6, “Loans, Allowance for Credit Losses - Loans, and Credit Quality,” in the Notes to Unaudited Consolidated Financial Statements under Part I, Item 1. For information regarding the allowance for credit losses and nonperforming assets see “BALANCE SHEET ANALYSIS – Allowance for Credit Losses - Loans” and “BALANCE SHEET ANALYSIS – Nonperforming Assets.” A detailed discussion of the loan portfolio accounting policies, general loan portfolio characteristics, and credit risk are described in Note 1, “Nature of Business and Significant Accounting Policies,” of the Notes to Consolidated Financial Statements, included in Part II, Item 8 of the Company’s 2022 Annual Report on Form 10-K.

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Table 6: Period End Loan Composition

	March 31, 2023				December 31, 2022				March 31, 2022
(in thousands)	Amount		% of Total		Amount		% of Total		Amount		% of Total
Commercial & industrial	$	1,330,052	21	%	$	1,304,819	21	%	$	1,063,300	23	%
Owner-occupied CRE	969,064		16		954,599		15		794,946		17
Agricultural	1,065,909		17		1,088,607		18		826,364		18
Commercial	3,365,025		54		3,348,025		54		2,684,610		58
CRE investment	1,146,388		19		1,149,949		19		807,602		17
Construction & land development	333,370		5		318,600		5		211,640		4
Commercial real estate	1,479,758		24		1,468,549		24		1,019,242		21
Commercial-based loans	4,844,783		78		4,816,574		78		3,703,852		79
Residential construction	134,782		2		114,392		2		72,660		2
Residential first mortgage	1,014,166		16		1,016,935		16		721,107		15
Residential junior mortgage	177,026		3		177,332		3		133,817		3
Residential real estate	1,325,974		21		1,308,659		21		927,584		20
Retail & other	52,975		1		55,266		1		51,879		1
Retail-based loans	1,378,949		22		1,363,925		22		979,463		21
Total loans	$	6,223,732	100	%	$	6,180,499	100	%	$	4,683,315	100	%

As noted in Table 6 above, the loan portfolio at March 31, 2023, was 78% commercial-based and 22% retail-based. Commercial-based loans are considered to have more inherent risk of default than retail-based loans, in part because of the broader list of factors that could impact a commercial borrower negatively. In addition, the commercial balance per borrower is typically larger than that for retail-based loans, implying higher potential losses on an individual customer basis. Credit risk on commercial-based loans is largely influenced by general economic conditions and the resulting impact on a borrower’s operations or on the value of underlying collateral, if any.

Total loans of $6.2 billion at March 31, 2023, increased $43 million (3% annualized) from December 31, 2022. At March 31, 2023, commercial and industrial loans represented the largest segment of Nicolet’s loan portfolio at 21% of the total portfolio, followed by CRE investment at 19% of the total portfolio. The loan portfolio is widely diversified and included the following industries: manufacturing, wholesaling, paper, packaging, food production and processing, agriculture, forest products, hospitality, retail, service, and businesses supporting the general building industry. The following chart provides the industry distribution of our commercial loan portfolio at March 31, 2023.

Commercial Loan Portfolio by Industry Type (based on NAICS codes)

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The following table presents the maturity distribution of the loan portfolio.

Table 7: Loan Maturity Distribution

As of March 31, 2023	Loan Maturity
(in thousands)	One Year or Less			After One Year to Five Years			After Five Years to Fifteen Years			After Fifteen Years			Total
Commercial & industrial	$	461,831		$	658,961		$	196,521		$	12,739		$	1,330,052
Owner-occupied CRE	75,722			658,076			207,699			27,567			969,064
Agricultural	322,511			333,575			368,658			41,165			1,065,909
CRE investment	137,888			734,765			243,544			30,191			1,146,388
Construction & land development	47,607			147,750			107,855			30,158			333,370
Residential construction *	39,145			8,368			3,232			84,037			134,782
Residential first mortgage	21,559			261,782			197,860			532,965			1,014,166
Residential junior mortgage	8,956			19,200			34,158			114,712			177,026
Retail & other	26,525			14,449			7,615			4,386			52,975
Total loans	$	1,141,744		$	2,836,926		$	1,367,142		$	877,920		$	6,223,732
Percent by maturity distribution	18		%	46		%	22		%	14		%	100		%
Total fixed rate loans	$	496,022		$	2,659,905		$	986,196		$	306,850		$	4,448,973
Total floating rate loans	$	645,722		$	177,021		$	380,946		$	571,070		$	1,774,759

As of December 31, 2022	Loan Maturity
(in thousands)	One Year or Less			After One Year to Five Years			After Five Years to Fifteen Years			After Fifteen Years			Total
Commercial & industrial	$	433,319		$	660,560		$	197,352		$	13,588		$	1,304,819
Owner-occupied CRE	78,759			639,093			208,719			28,028			954,599
Agricultural	350,752			328,495			367,913			41,447			1,088,607
CRE investment	129,770			737,869			250,256			32,054			1,149,949
Construction & land development	64,169			131,889			92,379			30,163			318,600
Residential construction *	41,049			6,922			2,091			64,330			114,392
Residential first mortgage	22,985			263,810			202,514			527,626			1,016,935
Residential junior mortgage	6,814			19,941			33,201			117,376			177,332
Retail & other	27,814			15,002			8,021			4,429			55,266
Total loans	$	1,155,431		$	2,803,581		$	1,362,446		$	859,041		$	6,180,499
Percent by maturity distribution	19		%	45		%	22		%	14		%	100		%
Total fixed rate loans	$	520,535		$	2,631,295		$	987,225		$	315,982		$	4,455,037
Total floating rate loans	$	634,896		$	172,286		$	375,221		$	543,059		$	1,725,462

* The residential construction loans with a loan maturity after five years represent a construction to permanent loan product.

Allowance for Credit Losses - Loans

For additional disclosures on the allowance for credit losses, see Note 6, “Loans, Allowance for Credit Losses - Loans, and Credit Quality,” in the Notes to Unaudited Consolidated Financial Statements under Part I, Item 1. A detailed discussion of the loan portfolio accounting policies, general loan portfolio characteristics, and credit risk are described in Note 1, “Nature of Business and Significant Accounting Policies,” of the Notes to Consolidated Financial Statements, included in Part II, Item 8 of the Company’s 2022 Annual Report on Form 10-K.

Credit risks within the loan portfolio are inherently different for each loan type. Credit risk is controlled and monitored through the use of lending standards, a thorough review of potential borrowers, and ongoing review of loan payment performance. Active asset quality administration, including early problem loan identification and timely resolution of problems, aids in the management of credit risk and minimization of loan losses. Loans charged off are subject to continuous review, and specific efforts are taken to achieve maximum recovery of principal, interest, and related expenses. For additional information regarding nonperforming assets see also “BALANCE SHEET ANALYSIS – Nonperforming Assets.”

The ACL-Loans represents management’s estimate of expected credit losses in the Company’s loan portfolio at the balance sheet date. To assess the overall appropriateness of the ACL-Loans, management applies an allocation methodology which focuses on evaluation of qualitative and environmental factors, including but not limited to: (i) evaluation of facts and issues related to specific loans; (ii) management’s ongoing review and grading of the loan portfolio; (iii) consideration of historical loan loss and delinquency experience on each portfolio segment; (iv) trends in past due and nonaccrual loans; (v) the risk characteristics of the various loan segments; (vi) changes in the size and character of the loan portfolio; (vii) concentrations of loans to specific borrowers or industries; (viii) existing economic conditions; (ix) the fair value of underlying collateral; and (x) other qualitative and quantitative factors which could affect expected credit losses. Assessing these numerous factors involves significant judgment; therefore, management considers the ACL-Loans a critical accounting estimate.

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Management allocates the ACL-Loans by pools of risk within each loan portfolio segment. The allocation methodology consists of the following components. First, a specific reserve is established for individually evaluated credit deteriorated loans, which management defines as nonaccrual credit relationships over $250,000, collateral dependent loans, purchased credit deteriorated loans, and other loans with evidence of credit deterioration. The specific reserve in the ACL-Loans for these credit deteriorated loans is equal to the aggregate collateral or discounted cash flow shortfall. Second, management allocates the ACL-Loans with historical loss rates by loan segment. The loss factors are measured on a quarterly basis and applied to each loan segment based on current loan balances and projected for their expected remaining life. Next, management allocates the ACL-Loans using the qualitative and environmental factors mentioned above. Consideration is given to those current qualitative or environmental factors that are likely to cause estimated credit losses at the evaluation date to differ from the historical loss experience of each loan segment. Lastly, management considers reasonable and supportable forecasts to assess the collectability of future cash flows.

At March 31, 2023, the ACL-Loans was $62 million (representing 1.00% of period end loans), unchanged from $62 million (or 1.00% of period end loans) at December 31, 2022 and up from $50 million (or 1.07% of period end loans) at March 31, 2022. The increase in the ACL-Loans from March 31, 2022 was mostly due to the Charter acquisition, which added $8 million of provision for the Day 2 allowance and $2 million related to purchased credit deteriorated loans. The components of the ACL-Loans are detailed further in Table 8 below.

Table 8: Allowance for Credit Losses - Loans

	Three Months Ended						Year Ended
(in thousands)	March 31, 2023			March 31, 2022			December 31, 2022
ACL-Loans:
Balance at beginning of period	$	61,829		$	49,672		$	49,672
ACL on PCD loans acquired	—			—			1,937
Provision for credit losses	750			300			10,950
Charge-offs	(184)			(100)			(1,033)
Recoveries	17			34			303
Net (charge-offs) recoveries	(167)			(66)			(730)
Balance at end of period	$	62,412		$	49,906		$	61,829
Net loan (charge-offs) recoveries:
Commercial & industrial	$	(108)		$	20		$	(86)
Owner-occupied CRE	—			(36)			(555)
Agricultural	2			—			—
CRE investment	—			—			169
Construction & land development	—			—			—
Residential construction	—			—			—
Residential first mortgage	1			4			(57)
Residential junior mortgage	—			—			1
Retail & other	(62)			(54)			(202)
Total net (charge-offs) recoveries	$	(167)		$	(66)		$	(730)
Ratios:
ACL-Loans to total loans	1.00		%	1.07		%	1.00		%
Net charge-offs to average loans, annualized	0.01		%	0.01		%	0.01		%

Nonperforming Assets

As part of its overall credit risk management process, management is committed to an aggressive problem loan identification philosophy. This philosophy has been implemented through the ongoing monitoring and review of all pools of risk in the loan portfolio to identify problem loans early and minimize the risk of loss. Management continues to actively work with customers and monitor credit risk from the ongoing economic uncertainty. For additional disclosures on credit quality, see Note 6, “Loans, Allowance for Credit Losses - Loans, and Credit Quality” of the Notes to Unaudited Consolidated Financial Statements under Part I, Item 1. For additional information on loans see “BALANCE SHEET ANALYSIS – Loans” and for additional information on the ACL-Loans see “BALANCE SHEET ANALYSIS – Allowance for Credit Losses-Loans.”

Nonperforming loans are considered one indicator of potential future loan losses. Nonperforming loans are defined as nonaccrual loans and loans 90 days or more past due but still accruing interest. Loans are generally placed on nonaccrual status when contractually past due 90 days or more as to interest or principal payments. Additionally, whenever management becomes aware of facts or circumstances that may adversely impact the collectability of principal or interest on loans, it is management’s

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practice to place such loans on nonaccrual status immediately. Nonperforming assets include nonperforming loans and other real estate owned (“OREO”). At March 31, 2023, nonperforming assets were $41 million and represented 0.50% of total assets, compared to $40 million or 0.46% of total assets at December 31, 2022.

The level of potential problem loans is another predominant factor in determining the relative level of risk in the loan portfolio and in determining the appropriate level of the ACL-Loans. Potential problem loans are generally defined by management to include loans rated as Substandard by management but that are in performing status; however, there are circumstances present which might adversely affect the ability of the borrower to comply with present repayment terms. The decision of management to include performing loans in potential problem loans does not necessarily mean that Nicolet expects losses to occur, but that management recognizes a higher degree of risk associated with these loans. The loans that have been reported as potential problem loans are predominantly commercial-based loans covering a diverse range of businesses and real estate property types. Potential problem loans were $76 million (1% of loans) and $53 million (1% of loans) at March 31, 2023 and December 31, 2022, respectively, with the increase primarily due to the downgrade of one commercial credit relationship. Potential problem loans require heightened management review given the pace at which a credit may deteriorate, the potential duration of asset quality stress, and uncertainty around the magnitude and scope of economic stress that may be felt by Nicolet’s customers and on underlying real estate values.

Table 9: Nonperforming Assets

(in thousands)	March 31, 2023			December 31, 2022			March 31, 2022
Nonperforming loans:
Commercial & industrial	$	2,874		$	3,328		$	1,849
Owner-occupied CRE	7,128			5,647			5,007
Agricultural	18,782			20,416			23,570
Commercial	28,784			29,391			30,426
CRE investment	4,126			3,832			3,914
Construction & land development	748			771			1,054
Commercial real estate	4,874			4,603			4,968
Commercial-based loans	33,658			33,994			35,394
Residential construction	—			—			—
Residential first mortgage	4,986			3,780			3,919
Residential junior mortgage	196			224			242
Residential real estate	5,182			4,004			4,161
Retail & other	55			82			115
Retail-based loans	5,237			4,086			4,276
Total nonaccrual loans	38,895			38,080			39,670
Accruing loans past due 90 days or more	—			—			—
Total nonperforming loans	$	38,895		$	38,080		$	39,670
Nonaccrual loans (included above) covered by guarantees	$	5,372		$	5,459		$	4,675
OREO:
Commercial real estate owned	$	628		$	628		$	797
Bank property real estate owned	1,347			1,347			9,019
Total OREO	1,975			1,975			9,816
Total nonperforming assets	$	40,870		$	40,055		$	49,486
Ratios:
Nonperforming loans to total loans	0.62		%	0.62		%	0.85		%
Nonperforming assets to total loans plus OREO	0.66		%	0.65		%	1.05		%
Nonperforming assets to total assets	0.50		%	0.46		%	0.68		%
ACL-Loans to nonperforming loans	160		%	162		%	126		%

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Deposits

Deposits represent Nicolet’s largest source of funds, and the strong core deposit base provides a stable funding source. As of March 31, 2023, approximately 83% of core deposit balances have been with Nicolet more than five years.

Core deposit balances of $6.4 billion at March 31, 2023 declined $181 million (3%) from December 31, 2022, partly due to the seasonal run-off of municipal deposits. Compared to March 31, 2022, core deposits increased $584 million (10%), largely due to the Charter acquisition. The deposit composition is presented in Table 10 below.

Table 10: Period End Deposit Composition

	March 31, 2023				December 31, 2022				March 31, 2022
(in thousands)	Amount		% of Total		Amount		% of Total		Amount		% of Total
Noninterest-bearing demand	$	2,094,623	30	%	$	2,361,816	33	%	$	1,912,995	31	%
Interest-bearing demand	1,138,415		17	%	1,279,850		18	%	1,239,582		20	%
Money market	1,886,879		27	%	1,707,619		24	%	1,500,442		24	%
Savings	865,824		12	%	931,417		13	%	841,369		13	%
Time	942,838		14	%	898,219		12	%	736,732		12	%
Total deposits	$	6,928,579	100	%	$	7,178,921	100	%	$	6,231,120	100	%
Brokered transaction accounts	$	233,393	4	%	$	252,829	3	%	$	228,079	4	%
Brokered and listed time deposits	289,181		4	%	339,066		5	%	180,823		3	%
Total brokered deposits	$	522,574	8	%	$	591,895	8	%	$	408,902	7	%
Customer transaction accounts	$	5,752,348	83	%	$	6,027,873	84	%	$	5,266,309	84	%
Customer time deposits	653,657		9	%	559,153		8	%	555,909		9	%
Total customer deposits (core)	$	6,406,005	92	%	$	6,587,026	92	%	$	5,822,218	93	%

Total uninsured deposits were $1.9 billion (representing 27% of total deposits) at March 31, 2023, compared to $2.1 billion (representing 29% of total deposits) at December 31, 2022.

Lending-Related Commitments

As of March 31, 2023 and December 31, 2022, Nicolet had the following off-balance sheet lending-related commitments.

Table 11: Commitments

(in thousands)	March 31, 2023		December 31, 2022
Commitments to extend credit	$	1,850,215	$	1,850,601
Financial standby letters of credit	23,246		26,530
Performance standby letters of credit	9,952		9,375

Interest rate lock commitments to originate residential mortgage loans held for sale (included above in commitments to extend credit) and forward commitments to sell residential mortgage loans held for sale are considered derivative instruments (“mortgage derivatives”) and the notional amounts represented $18 million and $17 million, respectively, at March 31, 2023. In comparison, interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans held for sale both represented $9 million at December 31, 2022. The net fair value of these mortgage derivatives combined was a gain of $72,000 at March 31, 2023 compared to a gain of $50,000 at December 31, 2022.

Liquidity Management

Liquidity management refers to the ability to ensure that adequate liquid funds are available to meet the current and future cash flow obligations arising in the daily operations of the Company. These cash flow obligations include the ability to meet the commitments to borrowers for extensions of credit, accommodate deposit cycles and trends, fund capital expenditures, pay dividends to stockholders (if any), and satisfy other operating expenses. The Company’s most liquid assets are cash and due from banks and interest-earning deposits, which totaled $114 million and $155 million at March 31, 2023 and December 31, 2022, respectively. Balances of these liquid assets are dependent on our operating, investing, and financing activities during any given period.

The $41 million decrease in cash and cash equivalents since year-end 2022 included $16 million net cash provided by operating activities and $489 million net cash provided by investing activities (mostly investment sales from the balance sheet repositioning), more than offset by $545 million net cash used in financing activities (repayment of FHLB borrowings from the

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balance sheet repositioning and a net decrease in deposits). As of March 31, 2023, management believed that adequate liquidity existed to meet all projected cash flow obligations.

Nicolet’s primary sources of funds include the core deposit base, repayment and maturity of loans, investment securities calls, maturities, and sales, and procurement of brokered deposits or other wholesale funding. At March 31, 2023, approximately 40% of the investment securities portfolio was pledged as collateral to secure public deposits and borrowings, as applicable, and for liquidity or other purposes as required by regulation. Liquidity sources available to the Company at March 31, 2023, are presented in Table 12 below.

Table 12: Liquidity Sources

(in millions)	March 31, 2023
FHLB Borrowing Availability (1)	$	547
Fed Funds Lines	155
Fed Discount Window	11
Immediate Funding Availability	$	713
Unencumbered AFS Securities	$	609
Less: AFS Securities retained per policy (2)	(403)
Brokered Capacity	1,210
Guaranteed portion of SBA loans	89
Other funding sources	28
Short-Term Funding Availability (3)	$	1,533
Total Contingent Funding Availability	$	2,246
(1) Excludes outstanding FHLB borrowings of $55 million at March 31, 2023.
(2) Excludes $403 million of AFS securities retained in accordance with internal treasury liquidity policy.
(3) Short-term funding availability defined as funding that could be secured between 2 and 30 days.

Management is committed to the Parent Company being a source of strength to the Bank and its other subsidiaries, and therefore, regularly evaluates capital and liquidity positions of the Parent Company in light of current and projected needs, growth or strategies. The Parent Company uses cash for normal expenses, debt service requirements and, when opportune, for common stock repurchases or investment in other strategic actions such as mergers or acquisitions. At March 31, 2023, the Parent Company had $62 million in cash. Additional cash sources available to the Parent Company include access to the public or private markets to issue new equity, subordinated notes or other debt. Dividends from the Bank and, to a lesser extent, stock option exercises, represent significant sources of cash flows for the Parent Company. The Bank is required by federal law to obtain prior approval of the OCC for payments of dividends if the total of all dividends declared by the Bank in any year will exceed certain thresholds. Management does not believe that regulatory restrictions on dividends from the Bank will adversely affect its ability to meet its cash obligations.

Interest Rate Sensitivity Management and Impact of Inflation

A reasonable balance between interest rate risk, credit risk, liquidity risk and maintenance of yield, is highly important to Nicolet’s business success and profitability. As an ongoing part of our financial strategy and risk management, we attempt to understand and manage the impact of fluctuations in market interest rates on our net interest income. The consolidated balance sheet consists mainly of interest-earning assets (loans, investments and cash) which are primarily funded by interest-bearing liabilities (deposits and other borrowings). Such financial instruments have varying levels of sensitivity to changes in market rates of interest. Market rates are highly sensitive to many factors beyond our control, including but not limited to general economic conditions and policies of governmental and regulatory authorities. Our operating income and net income depends, to a substantial extent, on “rate spread” (i.e., the difference between the income earned on loans, investments and other earning assets and the interest expense paid to obtain deposits and other funding liabilities).

Asset-liability management policies establish guidelines for acceptable limits on the sensitivity to changes in interest rates on earnings and market value of assets and liabilities. Such policies are set and monitored by management and the Board of Directors’ Asset and Liability Committee.

To understand and manage the impact of fluctuations in market interest rates on net interest income, we measure our overall interest rate sensitivity through a net interest income analysis, which calculates the change in net interest income in the event of hypothetical changes in interest rates under different scenarios versus a baseline scenario. Such scenarios can involve static balance sheets, balance sheets with projected growth, parallel (or non-parallel) yield curve slope changes, immediate or gradual changes in market interest rates, and one-year or longer time horizons. The simulation modeling uses assumptions involving

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market spreads, prepayments of rate-sensitive instruments, renewal rates on maturing or new loans, deposit retention rates, and other assumptions.

Among other scenarios, we assessed the impact on net interest income in the event of a gradual +/-100 bps and +/-200 bps change in market rates (parallel to the change in prime rate) over a one-year time horizon to a static (flat) balance sheet. The results provided include the liquidity measures mentioned above and reflect the changed interest rate environment. The interest rate scenarios are used for analytical purposes only and do not necessarily represent management’s view of future market interest rate movements. Based on financial data at March 31, 2023 and December 31, 2022, the projected changes in net interest income over a one-year time horizon, versus the baseline, are presented in Table 13 below. The results are within Nicolet’s guidelines of not greater than -10% for +/- 100 bps and not greater than -15% for +/- 200 bps.

Table 13: Interest Rate Sensitivity

	March 31, 2023		December 31, 2022
200 bps decrease in interest rates	(0.1)	%	(0.7)	%
100 bps decrease in interest rates	(0.1)	%	(0.4)	%
100 bps increase in interest rates	(0.2)	%	—	%
200 bps increase in interest rates	(0.3)	%	0.1	%

Actual results may differ from these simulated results due to timing, magnitude and frequency of interest rate changes, as well as changes in market conditions and their impact on customer behavior and management strategies.

The effect of inflation on a financial institution differs significantly from the effect on an industrial company. While a financial institution’s operating expenses, particularly salary and employee benefits, are affected by general inflation, the asset and liability structure of a financial institution consists largely of monetary items. Monetary items, such as cash, investments, loans, deposits and other borrowings, are those assets and liabilities which are or will be converted into a fixed number of dollars regardless of changes in prices. As a result, changes in interest rates have a more significant impact on a financial institution’s performance than does general inflation. Inflation may also have impacts on the Bank’s customers, on businesses and consumers and their ability or willingness to invest, save or spend, and perhaps on their ability to repay loans. As such, there would likely be impacts on the general appetite for banking products and the credit health of the Bank’s customer base.

Capital

Management regularly reviews the adequacy of its capital to ensure that sufficient capital is available for current and future needs and is in compliance with regulatory guidelines. The capital position and strategies are actively reviewed in light of perceived business risks associated with current and prospective earning levels, liquidity, asset quality, economic conditions in the markets served, and level of returns available to shareholders. Management intends to maintain an optimal capital and leverage mix for growth and shareholder return. For details on the change in capital see “BALANCE SHEET ANALYSIS.”

The Company’s and the Bank’s regulatory capital ratios remain above minimum regulatory ratios, including the capital conservation buffer. At March 31, 2023, the Bank’s regulatory capital ratios qualify the Bank as well-capitalized under the prompt-corrective action framework. This strong base of capital has allowed Nicolet to be opportunistic in strategic growth. A summary of the Company’s and the Bank’s regulatory capital amounts and ratios, as well as selected capital metrics are presented in the following table.

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Table 14: Capital

	At or for the Three Months Ended			At or for the Year Ended
($ in thousands)	March 31, 2023			December 31, 2022
Company Stock Repurchases: *
Common stock repurchased during the period (dollars)	$	—		$	61,483
Common stock repurchased during the period (full shares)	—			671,662
Company Risk-Based Capital:
Total risk-based capital	$	886,051		$	889,763
Tier 1 risk-based capital	676,114			684,280
Common equity Tier 1 capital	637,967			646,341
Total capital ratio	12.3		%	12.3		%
Tier 1 capital ratio	9.4		%	9.5		%
Common equity tier 1 capital ratio	8.9		%	9.0		%
Tier 1 leverage ratio	8.2		%	8.2		%
Bank Risk-Based Capital:
Total risk-based capital	$	813,992		$	816,951
Tier 1 risk-based capital	756,575			764,090
Common equity Tier 1 capital	756,575			764,090
Total capital ratio	11.3		%	11.3		%
Tier 1 capital ratio	10.5		%	10.6		%
Common equity tier 1 capital ratio	10.5		%	10.6		%
Tier 1 leverage ratio	9.2		%	9.1		%
* Reflects common stock repurchased under board of director authorizations for the common stock repurchase program.

In managing capital for optimal return, we evaluate capital sources and uses, pricing and availability of our stock in the market, and alternative uses of capital (such as the level of organic growth or acquisition opportunities) in light of strategic plans. At March 31, 2023, there remains $47 million authorized under this repurchase program, as modified, to be utilized from time-to-time to repurchase shares in the open market, through block transactions or in private transactions.

Critical Accounting Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions or judgments that affect the amounts reported in the financial statements and accompanying notes. These estimates and assumptions are based on historical experience, current information, and other factors deemed to be relevant; accordingly, as this information changes, actual results could differ from those estimates. Nicolet considers accounting estimates to be critical to reported financial results if the accounting estimate requires management to make assumptions about matters that are highly uncertain and different estimates that management reasonably could have used for the accounting estimate in the current period, or changes in the accounting estimate that are reasonably likely to occur from period to period, could have a material impact on the financial statements. The accounting estimates we consider to be critical include business combinations and the valuation of loans acquired, the determination of the allowance for credit losses, and income taxes. A discussion of these estimates can be found in the “Critical Accounting Estimates” section in Management’s Discussion and Analysis of Financial Condition and Results of Operations included in the Company’s 2022 Annual Report on Form 10-K. There have been no changes in the Company’s determination of critical accounting policies and estimates since December 31, 2022.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

There have been no material changes in our market risk at March 31, 2023, from that presented in our 2022 Annual Report on Form 10-K. See section “Interest Rate Sensitivity Management and Impact of Inflation” within Management’s Discussion and Analysis of Financial Condition and Results of Operations under Part I, Item 2, for our interest rate sensitivity position at March 31, 2023.

ITEM 4. CONTROLS AND PROCEDURES

(a) Disclosure Controls and Procedures. Management, under the supervision, and with the participation, of our principal executive officer and principal financial officer, evaluated our disclosure controls and procedures (as such term is defined in Exchange Act Rule 13a-15(e)). Based upon that evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

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(b) Changes in Internal Control Over Financial Reporting. There were no changes in the Company’s internal control over financial reporting (as such term is defined in Exchange Act Rule 13a-15(f)) during the quarter covered by this report that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

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PART II – OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

The Company and its subsidiaries may be involved from time to time in various routine legal proceedings incidental to our respective businesses. Neither the Company nor any of its subsidiaries are currently engaged in any legal proceedings that are expected to have a material adverse effect on our results of operations or financial position.

ITEM 1A. RISK FACTORS

There have been no material changes in the risk factors previously disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

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

Issuer Purchases of Equity Securities

The following table contains information regarding purchases of Nicolet’s common stock made during first quarter 2023 by or on behalf of the Company or any “affiliated purchaser,” as defined by Rule 10b-18(a)(3) of the Exchange Act.

	Total Number of Shares Purchased (a)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs (b)
	(#)	($)		(#)	(#)
Period
January 1 – January 31, 2023	—	$	—	—
February 1 – February 28, 2023	—	$	—	—
March 1 – March 31, 2023	492	$	75.26	—
Total	492	$	75.26	—	753,000

a.During first quarter 2023, the Company withheld no common shares for minimum tax withholding settlements on restricted stock, and withheld 492 common shares to satisfy the exercise price and tax withholding requirements on stock option exercises. These are not considered “repurchases” and, therefore, do not count against the maximum number of shares that may yet be purchased under the Board of Directors’ authorization.

b.The Board of Directors approved a common stock repurchase program which authorized, with subsequent modifications, the use of up to $276 million to repurchase outstanding shares of common stock. This common stock repurchase program was last modified on April 19, 2022, and has no expiration date. At March 31, 2023, approximately $47 million remained available under this common stock repurchase program, or approximately 753,000 shares of common stock (based upon the closing stock price of $63.05 on March 31, 2023).

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

None.

49

ITEM 6. EXHIBITS

The following exhibits are filed herewith:

Exhibit Number	Description
31.1	Certification of CEO under Section 302 of Sarbanes-Oxley Act of 2002
31.2	Certification of CFO under Section 302 of Sarbanes-Oxley Act of 2002
32.1	Certification of CEO Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of Sarbanes-Oxley Act of 2002
32.2	Certification of CFO Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of Sarbanes-Oxley Act of 2002
101.INS	The XBRL Instance Document does not appear in the Interactive Date File because its XBRL tags are embedded within the Inline XBRL document (1)
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 Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

(1) Includes the following financial information included in the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, formatted in iXBRL (Inline eXtensible Business Reporting Language): (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Income (Loss), (iii) the Consolidated Statements of Comprehensive Income (Loss), (iv) the Consolidated Statements of Stockholders’ Equity, (v) the Consolidated Statements of Cash Flows, and (vi) Notes to Unaudited Consolidated Financial Statements.

50

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.

	NICOLET BANKSHARES, INC.
May 2, 2023	/s/ Michael E. Daniels
	Michael E. Daniels
	President and Chief Executive Officer
May 2, 2023	/s/ H. Phillip Moore, Jr.
	H. Phillip Moore, Jr.
	Chief Financial Officer

51

EX-31.1

EXHIBIT 31.1

Certification Pursuant to 18 U.S.C.

Section 1350, as Adopted Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Michael E. Daniels, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Nicolet Bankshares, Inc. (the “registrant”);

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(s) 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(s) 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.

May 2, 2023	/s/ Michael E. Daniels
	Michael E. Daniels
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

Certification Pursuant to 18 U.S.C.

Section 1350, as Adopted Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, H. Phillip Moore, Jr., certify that:

1.I have reviewed this quarterly report on Form 10-Q of Nicolet Bankshares, Inc. (the “registrant”);

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(s) 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(s) 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.

May 2, 2023	/s/ H. Phillip Moore, Jr.
	H. Phillip Moore, Jr.
	Chief Financial Officer
	(Principal Financial and Accounting Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this Quarterly Report of Nicolet Bankshares, Inc., (the “Company”) on Form 10-Q as filed with the Securities and Exchange Commission on or about the date hereof (the “Report”), I, Michael E. Daniels, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. s.1350, as adopted pursuant to s.906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

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

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

May 2, 2023	/s/ Michael E. Daniels
	Michael E. Daniels
	President and Chief Executive Officer

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this Quarterly Report of Nicolet Bankshares, Inc., (the “Company”) on Form 10-Q as filed with the Securities and Exchange Commission on or about the date hereof (the “Report”), I, H. Phillip Moore, Jr., Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. s.1350, as adopted pursuant to s.906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

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

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

May 2, 2023	/s/ H. Phillip Moore, Jr.
	H. Phillip Moore, Jr.
	Chief Financial Officer

XML

Cover - shares	3 Months Ended
	Mar. 31, 2023	Apr. 30, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	001-37700
Entity Registrant Name	NICOLET BANKSHARES, INC
Entity Incorporation, State or Country Code	WI
Entity Tax Identification Number	47-0871001
Entity Address, Address Line One	111 North Washington Street
Entity Address, City or Town	Green Bay,
Entity Address, State or Province	WI
Entity Address, Postal Zip Code	54301
City Area Code	(920)
Local Phone Number	430-1400
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	NIC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		14,716,616
Entity Central Index Key	0001174850
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023		Dec. 31, 2022
Assets
Cash and due from banks	$ 93,462		$ 121,211
Interest-earning deposits	20,718		33,512
Cash and cash equivalents	114,180	[1]	154,723
Certificates of deposit in other banks	11,293		12,518
Securities available for sale (“AFS”), at fair value	1,023,176		917,618
Securities held to maturity (“HTM”), at amortized cost	0		679,128
Other investments	57,482		65,286
Loans held for sale	4,962		1,482
Loans	6,223,732		6,180,499
Allowance for credit losses - loans (“ACL-Loans”)	(62,412)		(61,829)
Loans, net	6,161,320		6,118,670
Premises and equipment, net	112,569		108,956
Bank owned life insurance (“BOLI”)	166,107		165,137
Goodwill and other intangibles, net	400,277		402,438
Accrued interest receivable and other assets	140,988		138,013
Total assets	8,192,354		8,763,969
Liabilities:
Noninterest-bearing demand deposits	2,094,623		2,361,816
Interest-bearing deposits	4,833,956		4,817,105
Total deposits	6,928,579		7,178,921
Short-term borrowings	50,000		317,000
Long-term borrowings	197,448		225,342
Accrued interest payable and other liabilities	54,535		70,177
Total liabilities	7,230,562		7,791,440
Stockholders’ Equity:
Common stock	147		147
Additional paid-in capital	623,746		621,988
Retained earnings	398,966		407,864
Accumulated other comprehensive income (loss)	(61,067)		(57,470)
Total stockholders’ equity	961,792		972,529
Total liabilities and stockholders’ equity	$ 8,192,354		$ 8,763,969
Preferred shares authorized (no par value) (in shares)	10,000,000		10,000,000
Preferred shares issued and outstanding (in shares)	0		0
Common shares authorized (par value $0.01 per share) (in shares)	30,000,000		30,000,000
Common shares outstanding (in shares)	14,698,265		14,690,614
Common shares issued (in shares)	14,771,255		14,764,104

[1] There was no restricted cash in cash and cash equivalents at March 31, 2023, while cash and cash equivalents at March 31, 2022, included restricted cash of $1.9 million pledged as collateral on interest rate swaps. No reserve balance was required with the Federal Reserve Bank at either March 31, 2023 or March 31, 2022.

XML

Consolidated Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Common shares, par value (in dollars per share)	$ 0.01	$ 0.01

XML

Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest income:
Loans, including loan fees	$ 79,142	$ 51,299
Investment securities:
Taxable	4,961	5,127
Tax-exempt	1,737	675
Other interest income	1,536	817
Total interest income	87,376	57,918
Interest expense:
Deposits	24,937	2,192
Short-term borrowings	3,212	0
Long-term borrowings	2,506	1,931
Total interest expense	30,655	4,123
Net interest income	56,721	53,795
Provision for credit losses	3,090	300
Net interest income after provision for credit losses	53,631	53,495
Noninterest income:
Mortgage income, net	1,466	3,253
BOLI income	1,200	933
Deferred compensation plan asset market valuations	946	(467)
LSR income, net	1,155	(382)
Asset gains (losses), net	(38,468)	1,313
Other income	1,832	1,536
Total noninterest income	(21,844)	15,943
Noninterest expense:
Personnel	24,328	21,191
Occupancy, equipment and office	8,783	6,944
Business development and marketing	2,121	1,831
Data processing	3,988	3,387
Intangibles amortization	2,161	1,424
FDIC assessments	540	480
Merger-related expense	163	98
Other expense	2,791	2,195
Total noninterest expense	44,875	37,550
Income (loss) before income tax expense	(13,088)	31,888
Income tax expense (benefit)	(4,190)	7,724
Net income (loss)	$ (8,898)	$ 24,164
Earnings (loss) per common share:
Basic (in dollars per share)	$ (0.61)	$ 1.77
Diluted (in dollars per share)	$ (0.61)	$ 1.70
Weighted average common shares outstanding:
Basic (in shares)	14,694,451	13,648,745
Diluted (in shares)	14,694,451	14,214,752
Wealth management fee income
Noninterest income:
Fees and commissions	$ 5,512	$ 5,699
Service charges on deposit accounts
Noninterest income:
Fees and commissions	1,480	1,477
Card interchange income
Noninterest income:
Fees and commissions	$ 3,033	$ 2,581

XML

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (8,898)	$ 24,164
Unrealized gains (losses) on securities AFS:
Net unrealized holding gains (losses)	15,294	(39,948)
Net realized (gains) losses included in income	213	(15)
Reclassification adjustment for securities transferred from held to maturity to available for sale	(20,434)	0
Income tax (expense) benefit	1,330	10,790
Total other comprehensive income (loss)	(3,597)	(29,173)
Comprehensive income (loss)	$ (12,495)	$ (5,009)

XML

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2021	$ 891,891	$ 140	$ 575,045	$ 313,604	$ 3,102
Comprehensive income:
Net income (loss)	24,164			24,164
Other comprehensive income (loss)	(29,173)				(29,173)
Stock-based compensation expense	1,799		1,799
Exercise of stock options, net	1,887	1	1,886
Issuance of common stock	175		175
Purchase and retirement of common stock	(54,433)	(6)	(54,427)
Ending Balance at Mar. 31, 2022	836,310	135	524,478	337,768	(26,071)
Beginning Balance at Dec. 31, 2022	972,529	147	621,988	407,864	(57,470)
Comprehensive income:
Net income (loss)	(8,898)			(8,898)
Other comprehensive income (loss)	(3,597)				(3,597)
Stock-based compensation expense	1,424		1,424
Exercise of stock options, net	148		148
Issuance of common stock	186		186
Ending Balance at Mar. 31, 2023	$ 961,792	$ 147	$ 623,746	$ 398,966	$ (61,067)

XML

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Cash Flows From Operating Activities:
Net income (loss)		$ (8,898)	$ 24,164
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation, amortization, and accretion		4,197	6,769
Provision for credit losses		3,090	300
Increase in cash surrender value of life insurance		(1,087)	(933)
Stock-based compensation expense		1,424	1,799
Asset (gains) losses, net		38,468	(1,313)
Gain on sale of loans held for sale, net		(612)	(2,377)
Net change due to:
Proceeds from sale of loans held for sale		17,789	86,478
Origination of loans held for sale		(20,861)	(88,304)
Accrued interest receivable and other assets		(2,326)	6,786
Accrued interest payable and other liabilities		(15,642)	(11,426)
Net cash provided by (used in) operating activities		15,542	21,943
Cash Flows From Investing Activities:
Net (increase) decrease in loans		(41,764)	(64,669)
Net (increase) decrease in certificates of deposit in other banks		1,225	2,228
Purchases of securities AFS		0	(5,017)
Purchases of securities HTM		0	(38,856)
Proceeds from sales of securities AFS		22,565	3,400
Proceeds from sales of securities HTM		460,051	0
Proceeds from calls and maturities of securities AFS		42,028	29,511
Proceeds from calls and maturities of securities HTM		2,916	5,430
Purchases of other investments		(3,801)	(10,953)
Proceeds from sales of other investments		11,108	775
Proceeds from redemption of BOLI		117	117
Net (increase) decrease in premises and equipment		(5,646)	(1,953)
Net (increase) decrease in other real estate and other assets		0	3,075
Net cash (paid) received in branch sale		0	147,833
Net cash provided by (used in) investing activities		488,799	70,921
Cash Flows From Financing Activities:
Net increase (decrease) in deposits		(250,218)	(229,862)
Net increase (decrease) in short-term borrowings		(267,000)	0
Repayments of long-term borrowings		(28,000)	(10,000)
Purchase and retirement of common stock		0	(54,433)
Proceeds from issuance of common stock		186	175
Proceeds from exercise of stock options		148	1,887
Net cash provided by (used in) financing activities		(544,884)	(292,233)
Net increase (decrease) in cash and cash equivalents		(40,543)	(199,369)
Cash and cash equivalents:
Beginning		154,723	595,292
Ending	[1]	114,180	395,923
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest		30,825	5,170
Cash paid for taxes		0	0
Transfer of securities from HTM to AFS		177,727	0
Transfer of loans and bank premises to other real estate owned		0	432
Capitalized mortgage servicing rights		$ 204	$ 886

[1] There was no restricted cash in cash and cash equivalents at March 31, 2023, while cash and cash equivalents at March 31, 2022, included restricted cash of $1.9 million pledged as collateral on interest rate swaps. No reserve balance was required with the Federal Reserve Bank at either March 31, 2023 or March 31, 2022.

XML

Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 31, 2022
Statement of Cash Flows [Abstract]
Restricted cash and cash equivalents	$ 0.0	$ 1.9

XML

Basis of Presentation

3 Months Ended

Mar. 31, 2023

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

General

In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the consolidated balance sheets, statements of income (loss), comprehensive income (loss), changes in stockholders’ equity, and cash flows of Nicolet Bankshares, Inc. (the “Company” or “Nicolet”) and its subsidiaries, as of and for the periods presented, and all such adjustments are of a normal recurring nature. All material intercompany transactions and balances have been eliminated. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the entire year.

These interim consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission and, therefore, certain information and footnote disclosures normally presented in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) have been omitted or abbreviated. These consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and footnotes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

Critical Accounting Policies and Estimates

Preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions, and judgments that affect the amounts reported in the consolidated financial statements and accompanying disclosures. Estimates are used in accounting for, among other items, the allowance for credit losses, valuation of loans in acquisition transactions, useful lives for depreciation and amortization, fair value of financial instruments, impairment calculations, valuation of deferred tax assets, uncertain income tax positions and contingencies. These estimates are based on management’s knowledge of historical experience, current information, and other factors deemed to be relevant; accordingly, as this information changes, actual results could differ from those estimates. Factors that may cause sensitivity to the aforementioned estimates include but are not limited to: external market factors such as market interest rates and employment rates, changes to operating policies and procedures, changes in applicable banking or tax regulations, and changes to deferred tax estimates. Nicolet considers accounting estimates to be critical to reported financial results if the accounting estimate requires management to make assumptions about matters that are highly uncertain and different estimates that are reasonably likely to occur from period to period, could have a material impact on the financial statements. The accounting estimates we consider to be critical include business combinations and the valuation of loans acquired, the determination of the allowance for credit losses, and income taxes.

There have been no material changes or developments with respect to the assumptions or methodologies that the Company uses when applying critical accounting policies and developing critical accounting estimates as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

Recent Accounting Pronouncements Adopted

In March 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings (“TDRs”) and Vintage Disclosures. This ASU eliminated the accounting guidance for TDRs by creditors and enhanced the disclosure requirements for loan modifications to borrowers experiencing financial difficulty. The ASU also requires public business entities to expand the vintage disclosures to include gross charge-offs by year of origination. The updated guidance is effective for fiscal years beginning after December 15, 2022. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements; however, it resulted in new disclosures. See Note 6 for the new disclosures.

Future Accounting Pronouncements

In March 2023, the FASB issued ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. This ASU permits reporting entities to elect to account for tax equity investments, regardless of the tax credit program for which the income tax credits are received, using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the income tax credits and other income tax benefits received and recognizes the net amortization and income tax credits and other income tax benefits in the income statement as a component of income tax expense. A reporting entity makes an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. This ASU also requires specific disclosures of investments that generate income tax credits and other income tax benefits from a tax credit program for which the entity has elected to apply the proportional amortization method. The updated guidance is effective for fiscal years beginning after December 15, 2023.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. It provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. In December 2022, the FASB issued ASU 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848, which defers the sunset date of the original guidance from December 31, 2022 to December 31, 2024. The Company continues to work through the cessation of LIBOR, including the modification of its loans and other financial instruments with attributes that are either directly or indirectly influenced by LIBOR. The Company expects to utilize the reference rate reform transition guidance, as applicable, and does not expect such adoption to have a material impact on its consolidated financial statements or financial disclosures. The Company will continue to assess the impact as the reference rate transition approaches June 30, 2023.

Reclassifications

Certain amounts in the 2022 consolidated financial statements have been reclassified to conform to the 2023 presentation. These reclassifications were not material and did not impact previously reported net income or comprehensive income.

XML

Acquisition

3 Months Ended

Mar. 31, 2023

Business Combination and Asset Acquisition [Abstract]

Acquisition

Acquisition

Charter Bankshares, Inc. (“Charter”): On August 26, 2022, Nicolet completed its merger with Charter, pursuant to the Agreement and Plan of Merger dated March 29, 2022, at which time Charter merged with and into Nicolet, and Charter Bank, the wholly owned bank subsidiary of Charter, was merged with and into Nicolet National Bank (the “Bank”), the wholly owned bank subsidiary of Nicolet. In the merger, Charter stockholders received 15.458 shares of Nicolet common stock and $475 in cash for each share of Charter owned. As a result, Nicolet issued approximately 1.26 million shares of Nicolet common stock for stock consideration of $98 million and cash consideration of $39 million, for a total purchase price of $137 million. With the Charter merger, Nicolet expanded to Western Wisconsin and Minnesota.

A summary of the assets acquired and liabilities assumed in the Charter transaction, as of the acquisition date, including the purchase price allocation was as follows.

(In millions, except share data)	Acquired from Charter		Fair Value Adjustments		Estimated Fair Value
Assets Acquired:
Cash and cash equivalents	$	10	$	—	$	10
Investment securities	218		—		218
Loans	848		(21)		827
ACL-Loans	(9)		7		(2)
Premises and equipment	9		1		10
BOLI	29		—		29
Core deposit intangible	—		19		19
Other assets	5		5		10
Total assets	$	1,110	$	11	$	1,121
Liabilities Assumed:
Deposits	$	869	$	1	$	870
Borrowings	161		—		161
Other liabilities	3		—		3
Total liabilities	$	1,033	$	1	$	1,034
Net assets acquired					$	87
Purchase Price:
Nicolet common stock issued (in shares)					1,262,360
Value of Nicolet common stock consideration					$	98
Cash consideration paid					39
Total purchase price					$	137
Preliminary goodwill					$	50

The Company purchased loans through the acquisition of Charter for which there was, at the date of acquisition, more than insignificant deterioration of credit quality since origination (purchased credit deteriorated loans or “PCD” loans). The carrying amount of these loans at acquisition was as follows.

(In thousands)	August 26, 2022
Purchase price of PCD loans at acquisition	$	24,031
Allowance for credit losses on PCD loans at acquisition	1,709
Par value of PCD acquired loans at acquisition	$	25,740

The Company accounted for the Charter acquisition under the acquisition method of accounting, and thus, the financial position and results of operations of Charter prior to the consummation date were not included in the accompanying consolidated financial statements. The accounting required assets purchased and liabilities assumed to be recorded at their respective estimated fair values at the date of acquisition. The estimated fair value was determined with the assistance of third party valuations, appraisals, and third party advisors. Goodwill arising as a result of the Charter acquisition is not deductible for tax purposes. Due to the timing of the merger, the purchase price allocation and estimated fair value measurements remain preliminary. Management will continue to review the estimated fair values and expects to finalize its analysis of the acquired assets and assumed liabilities in the transaction over the next few months, within one year of the merger. Therefore, adjustments to the purchase price allocation and estimated fair value may occur.

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Earnings per Common Share

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Earnings per Common Share

Earnings per Common Share

Basic earnings per common share are calculated by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings per common share are calculated by dividing net income (loss) by the weighted average number of shares adjusted for the dilutive effect of common stock awards (outstanding stock options and unvested restricted stock), if any. Presented below are the calculations for basic and diluted earnings per common share.

	Three Months Ended March 31,
(In thousands, except per share data)	2023		2022
Net income (loss)	$	(8,898)	$	24,164
Weighted average common shares outstanding	14,694		13,649
Effect of dilutive common stock awards	—		566
Diluted weighted average common shares outstanding	14,694		14,215
Basic earnings (loss) per common share*	$	(0.61)	$	1.77
Diluted earnings (loss) per common share*	$	(0.61)	$	1.70

*Cumulative quarterly per share performance may not equal annual per share totals due to the effects of the amount and timing of capital increases. When computing earnings per share for an interim period, the denominator is based on the weighted average shares outstanding during the interim period, and not on an annualized weighted average basis. Accordingly, the sum of the earnings per share data for the quarters will not necessarily equal the year to date earnings per share data.

As a result of the Company’s reported net loss for the three months ended March 31, 2023, all of the common stock awards outstanding were excluded from the computation of diluted earnings (loss) per common shares. For the three months ended March 31, 2022, options to purchase approximately 0.1 million shares were excluded from the calculation of diluted earnings per common share as the effect of their exercise would have been anti-dilutive.

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

The Company may grant stock options and restricted stock under its stock-based compensation plans to certain officers, employees and directors. These plans are administered by a committee of the Board of Directors, and at March 31, 2023, approximately 0.7 million shares were available for grant under these stock-based compensation plans.

A Black-Scholes model is utilized to estimate the fair value of stock option grants, while the market price of the Company’s stock at the date of grant is used to estimate the fair value of restricted stock awards. The weighted average assumptions used in the Black-Scholes model for valuing stock option grants for the three months ended March 31, 2022 were as follows. There were no stock options granted for the three months ended March 31, 2023.

	Three Months Ended March 31, 2022
Dividend yield	—		%
Expected volatility	30		%
Risk-free interest rate	1.77		%
Expected average life	7 years
Weighted average per share fair value of options	$	32.99

A summary of the Company’s stock option activity is summarized below.

Stock Options	Option Shares Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Life (Years)	Aggregate Intrinsic Value (in thousands)
Outstanding - December 31, 2022	1,853,064	$	59.79
Granted	—	—
Exercise of stock options *	(5,329)	34.82
Outstanding - March 31, 2023	1,847,735	$	59.86	5.7	$	16,359
Exercisable - March 31, 2023	1,278,592	$	52.22	4.6	$	16,302

* The terms of the stock option agreements permit having a number of shares of stock withheld, the fair market value of which as of the date of exercise is sufficient to satisfy the exercise price and/or tax withholding requirements. For the three months ended March 31, 2023, 492 such shares were withheld by the Company.

Intrinsic value represents the amount by which the fair market value of the underlying stock exceeds the exercise price of the stock options. The intrinsic value of options exercised for the three months ended March 31, 2023 and 2022 was approximately $0.2 million and $3.0 million, respectively.

A summary of the Company’s restricted stock activity is summarized below.

Restricted Stock	Weighted Average Grant Date Fair Value		Restricted Shares Outstanding
Outstanding - December 31, 2022	$	76.49	73,490
Granted	—		—
Vested	72.00		(500)
Outstanding - March 31, 2023	$	76.52	72,990

The Company recognized approximately $1.4 million and $1.8 million of stock-based compensation expense (included in personnel on the consolidated statements of income) for the three months ended March 31, 2023 and 2022, respectively, associated with its common stock awards granted to officers and employees. As of March 31, 2023, there was approximately $17.2 million of unrecognized compensation cost related to equity award grants, which is expected to be recognized over the remaining vesting period of approximately three years. The Company recognized a tax benefit of less than $0.1 million and approximately $0.4 million for the three months ended March 31, 2023 and 2022, respectively, for the tax impact of stock option exercises and vesting of restricted stock.

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Securities and Other Investments

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Securities and Other Investments

Securities and Other Investments

Securities

Securities are classified as AFS or HTM on the consolidated balance sheets at the time of purchase. AFS securities include those securities that the Company intends to hold for an indefinite period of time, but not necessarily to maturity, and are carried at fair value on the consolidated balance sheets. HTM securities include those securities which the Company has both the positive intent and ability to hold to maturity, and are carried at amortized cost on the consolidated balance sheets. Premiums and discounts on investment securities are amortized or accreted into interest income over the estimated life of the related securities using the effective interest method.

The amortized cost and fair value of securities AFS and HTM are summarized as follows.

	March 31, 2023
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities AFS:
U.S. Treasury securities	$	192,166	$	—	$	6,058	$	186,108
U.S. government agency securities	9,959		36		25		9,970
State, county and municipals	428,643		692		31,887		397,448
Mortgage-backed securities	350,712		—		39,091		311,621
Corporate debt securities	125,349		—		7,320		118,029
Total securities AFS	$	1,106,829	$	728	$	84,381	$	1,023,176

	December 31, 2022
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities AFS:
U.S. Treasury securities	$	192,116	$	—	$	8,286	$	183,830
U.S. government agency securities	2,133		—		33		2,100
State, county and municipals	433,733		123		35,668		398,188
Mortgage-backed securities	227,650		10		26,728		200,932
Corporate debt securities	140,712		3		8,147		132,568
Total securities AFS	$	996,344	$	136	$	78,862	$	917,618
Securities HTM:
U.S. Treasury securities	$	497,648	$	—	$	35,722	$	461,926
U.S. government agency securities	8,744		46		—		8,790
State, county and municipals	34,874		—		3,349		31,525
Mortgage-backed securities	137,862		—		16,751		121,111
Total securities HTM	$	679,128	$	46	$	55,822	$	623,352

On March 7, 2023, Nicolet executed the sale of $500 million (par value) U.S. Treasury held to maturity securities for a pre-tax loss of $38 million or an after-tax loss of $28 million. Proceeds from the sale were used to reduce existing FHLB borrowings with the remainder held in investable cash. As a result of the sale of securities previously classified as held to maturity, the remaining unsold portfolio of held to maturity securities, with a book value of $177 million, was reclassified to available for sale with a carrying value of approximately $157 million. The unrealized loss on this portfolio of $20 million increased the balance of accumulated other comprehensive loss $15 million, net of the deferred tax effect, and is subject to future market changes.

Proceeds and realized gains or losses from the sale of AFS and HTM securities were as follows.

	Three Months Ended March 31,
(in thousands)	2023		2022
Securities AFS:
Gross gains	$	126	$	20
Gross losses	(339)		(5)
Gains (losses) on sales of securities AFS, net	$	(213)	$	15
Proceeds from sales of securities AFS	$	22,565	$	3,400
Securities HTM:
Gross gains	$	—	$	—
Gross losses	(37,723)		—
Gains (losses) on sales of securities HTM, net	$	(37,723)	$	—
Proceeds from sales of securities HTM	$	460,051	$	—

All mortgage-backed securities included in the tables above were issued by U.S. government agencies and corporations. Investment securities with a carrying value of $414 million and $883 million, as of March 31, 2023 and December 31, 2022, respectively, were pledged as collateral to secure public deposits and borrowings, as applicable, and for liquidity or other purposes as required by regulation. Accrued interest on investment securities totaled $6 million at both March 31, 2023 and December 31, 2022, and is included in accrued interest receivable and other assets on the consolidated balance sheets.

The following table presents gross unrealized losses and the related estimated fair value of investment securities for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position.

	March 31, 2023
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Number of Securities
Securities AFS:
U.S. Treasury securities	$	456	$	8	$	185,640	$	6,050	$	186,096	$	6,058	9
U.S. government agency securities	2,718		20		107		5		2,825		25		9
State, county and municipals	79,617		1,826		247,397		30,061		327,014		31,887		608
Mortgage-backed securities	35,724		2,158		275,897		36,933		311,621		39,091		464
Corporate debt securities	68,654		2,583		44,995		4,737		113,649		7,320		75
Total	$	187,169	$	6,595	$	754,036	$	77,786	$	941,205	$	84,381	1,165

	December 31, 2022
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Number of Securities
Securities AFS:
U.S. Treasury securities	$	448	$	14	$	183,382	$	8,272	$	183,830	$	8,286	9
U.S. government agency securities	2,083		32		17		1		2,100		33		9
State, county and municipals	277,546		18,041		86,569		17,627		364,115		35,668		812
Mortgage-backed securities	102,108		11,320		95,614		15,408		197,722		26,728		376
Corporate debt securities	114,887		6,186		12,938		1,961		127,825		8,147		90
Total	$	497,072	$	35,593	$	378,520	$	43,269	$	875,592	$	78,862	1,296
Securities HTM:
U.S. Treasury securities	$	—	$	—	$	461,926	$	35,722	$	461,926	$	35,722	6
State, county and municipals	17,591		1,594		11,654		1,755		29,245		3,349		58
Mortgage-backed securities	68,108		8,029		53,003		8,722		121,111		16,751		106
Total	$	85,699	$	9,623	$	526,583	$	46,199	$	612,282	$	55,822	170

During first quarter 2023, the Company recognized provision expense of $2.3 million related to the expected credit loss on its Signature Bank sub debt investment (acquired in an acquisition), and immediately charged-off the full investment. The Company does not consider its remaining securities AFS with unrealized losses to be attributable to credit-related factors, as the unrealized losses in each category have occurred as a result of changes in noncredit-related factors such as changes in interest rates, market spreads and market conditions subsequent to purchase, not credit deterioration. Furthermore, the Company does not have the intent to sell any of these AFS securities and believes that it is more likely than not that we will not have to sell any such securities before a recovery of cost. As of March 31, 2023 and December 31, 2022, no allowance for credit losses on AFS securities was recognized.

The Company evaluated the HTM securities and determined no allowance for credit losses was necessary at December 31, 2022. The U.S. Treasury and U.S. government agency securities are guaranteed by the U.S. government. For the state, county and municipal securities, management considered issuer bond ratings, historical loss rates by bond ratings, whether issuers continue to make timely principal and interest payments per the contractual terms of the investment securities, internal forecasts, and whether or not such investment securities provide insurance, other credit enhancement, or are pre-refunded by the issuers. For the mortgage-backed securities, all such securities were issued by U.S. government agencies and corporations, which are currently explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses.

The amortized cost and fair value of investment securities by contractual maturity are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties; as this is particularly inherent in mortgage-backed securities, these securities are not included in the maturity categories below.

As of March 31, 2023	Securities AFS
(in thousands)	Amortized Cost		Fair Value
Due in less than one year	$	225,921	$	223,243
Due in one year through five years	173,794		163,788
Due after five years through ten years	223,776		201,296
Due after ten years	132,626		123,228
	756,117		711,555
Mortgage-backed securities	350,712		311,621
Total investment securities	$	1,106,829	$	1,023,176

Other Investments

Other investments include “restricted” equity securities, equity securities with readily determinable fair values, and private company securities. As a member of the Federal Reserve Bank System and the Federal Home Loan Bank (“FHLB”) System, Nicolet is required to maintain an investment in the capital stock of these entities. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other exchange traded equity securities. As no ready market exists for these stocks, and they have no quoted market value, these investments are carried at cost. Also included are investments in other private companies that do not have quoted market prices, which are carried at cost less impairment charges, if any. The carrying value of other investments are summarized as follows.

	March 31, 2023		December 31, 2022
(in thousands)	Amount		Amount
Federal Reserve Bank stock	$	32,708	$	32,219
Federal Home Loan Bank (“FHLB”) stock	10,174		18,625
Equity securities with readily determinable fair values	3,912		4,376
Other investments	10,688		10,066
Total other investments	$	57,482	$	65,286

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Loans, Allowance for Credit Losses - Loans, and Credit Quality

3 Months Ended

Mar. 31, 2023

Receivables [Abstract]

Loans, Allowance for Credit Losses - Loans, and Credit Quality

Loans, Allowance for Credit Losses - Loans, and Credit Quality

The loan composition is summarized as follows.

	March 31, 2023					December 31, 2022
(in thousands)	Amount			% of Total		Amount			% of Total
Commercial & industrial	$	1,330,052		21	%	$	1,304,819		21	%
Owner-occupied commercial real estate (“CRE”)	969,064			16		954,599			15
Agricultural	1,065,909			17		1,088,607			18
CRE investment	1,146,388			19		1,149,949			19
Construction & land development	333,370			5		318,600			5
Residential construction	134,782			2		114,392			2
Residential first mortgage	1,014,166			16		1,016,935			16
Residential junior mortgage	177,026			3		177,332			3
Retail & other	52,975			1		55,266			1
Loans	6,223,732			100	%	6,180,499			100	%
Less allowance for credit losses - Loans (“ACL-Loans”)	62,412					61,829
Loans, net	$	6,161,320				$	6,118,670
Allowance for credit losses - Loans to loans	1.00		%			1.00		%

Accrued interest on loans totaled $16 million and $15 million at March 31, 2023 and December 31, 2022, respectively, and is included in accrued interest receivable and other assets on the consolidated balance sheets.

Allowance for Credit Losses - Loans:

The majority of the Company’s loans, commitments, and letters of credit have been granted to customers in the Company’s market area. Although the Company has a diversified loan portfolio, the credit risk in the loan portfolio is largely influenced by general economic conditions and trends of the counties and markets in which the debtors operate, and the resulting impact on the operations of borrowers or on the value of underlying collateral, if any.

A roll forward of the allowance for credit losses - loans is summarized as follows.

	Three Months Ended				Year Ended
(in thousands)	March 31, 2023		March 31, 2022		December 31, 2022
Beginning balance	$	61,829	$	49,672	$	49,672
ACL on PCD loans acquired	—		—		1,937
Provision for credit losses	750		300		10,950
Charge-offs	(184)		(100)		(1,033)
Recoveries	17		34		303
Net (charge-offs) recoveries	(167)		(66)		(730)
Ending balance	$	62,412	$	49,906	$	61,829

The following tables present the balance and activity in the ACL-Loans by portfolio segment.

	Three Months Ended March 31, 2023
(in thousands)	Commercial & industrial			Owner- occupied CRE			Agricultural			CRE investment			Construction & land development			Residential construction			Residential first mortgage			Residential junior mortgage			Retail & other			Total
ACL-Loans
Beginning balance	$	16,350		$	9,138		$	9,762		$	12,744		$	2,572		$	1,412		$	6,976		$	1,846		$	1,029		$	61,829
Provision	457			172			(328)			210			106			262			(206)			(31)			108			750
Charge-offs	(118)			—			—			—			—			—			—			—			(66)			(184)
Recoveries	10			—			2			—			—			—			1			—			4			17
Net (charge-offs) recoveries	(108)			—			2			—			—			—			1			—			(62)			(167)
Ending balance	$	16,699		$	9,310		$	9,436		$	12,954		$	2,678		$	1,674		$	6,771		$	1,815		$	1,075		$	62,412
As % of ACL-Loans	27		%	15		%	15		%	21		%	4		%	2		%	11		%	3		%	2		%	100		%

	Year Ended December 31, 2022
(in thousands)	Commercial & industrial			Owner- occupied CRE			Agricultural			CRE investment			Construction & land development			Residential construction			Residential first mortgage			Residential junior mortgage			Retail & other			Total
ACL-Loans
Beginning balance	$	12,613		$	7,222		$	9,547		$	8,462		$	1,812		$	900		$	6,844		$	1,340		$	932		$	49,672
ACL on PCD loans	1,408			384			—			38			2			—			93			12			—			1,937
Provision	2,415			2,087			215			4,075			758			512			96			493			299			10,950
Charge-offs	(190)			(555)			—			—			—			—			(65)			—			(223)			(1,033)
Recoveries	104			—			—			169			—			—			8			1			21			303
Net (charge-offs) recoveries	(86)			(555)			—			169			—			—			(57)			1			(202)			(730)
Ending balance	$	16,350		$	9,138		$	9,762		$	12,744		$	2,572		$	1,412		$	6,976		$	1,846		$	1,029		$	61,829
As % of ACL-Loans	26		%	15		%	16		%	21		%	4		%	2		%	11		%	3		%	2		%	100		%

The ACL-Loans represents management’s estimate of expected credit losses in the Company’s loan portfolio at the balance sheet date. To assess the appropriateness of the ACL-Loans, management applies an allocation methodology which focuses on evaluation of qualitative and environmental factors, including but not limited to: (i) evaluation of facts and issues related to specific loans; (ii) management’s ongoing review and grading of the loan portfolio; (iii) consideration of historical loan loss and delinquency experience on each portfolio segment; (iv) trends in past due and nonperforming loans; (v) the risk characteristics of the various loan segments; (vi) changes in the size and character of the loan portfolio; (vii) concentrations of loans to specific borrowers or industries; (viii) existing economic conditions; (ix) the fair value of underlying collateral; and (x) other qualitative and quantitative factors which could affect expected credit losses. Assessing these numerous factors involves significant judgment.

Management allocates the ACL-Loans by pools of risk within each loan portfolio segment. The allocation methodology consists of the following components. First, a specific reserve is established for individually evaluated credit-deteriorated loans, which management defines as nonaccrual credit relationships over $250,000, collateral dependent loans, purchased credit deteriorated loans, and other loans with evidence of credit deterioration. The specific reserve in the ACL-Loans for these credit

deteriorated loans is equal to the aggregate collateral or discounted cash flow shortfall. Management allocates the ACL-Loans with historical loss rates by loan segment. The loss factors are measured on a quarterly basis and applied to each loan segment based on current loan balances and projected for their expected remaining life. Next, management allocates the ACL-Loans using the qualitative factors mentioned above. Consideration is given to those current qualitative or environmental factors that are likely to cause estimated credit losses as of the evaluation date to differ from the historical loss experience of each loan segment. Lastly, management considers reasonable and supportable forecasts to assess the collectability of future cash flows.

Allowance for Credit Losses-Unfunded Commitments:

In addition to the ACL-Loans, the Company has established an ACL-Unfunded commitments, classified in accrued interest payable and other liabilities on the consolidated balance sheets. This reserve is maintained at a level that management believes is sufficient to absorb losses arising from unfunded loan commitments, and is determined quarterly based on methodology similar to the methodology for determining the ACL-Loans. The reserve for unfunded commitments was $3.0 million at both March 31, 2023 and December 31, 2022.

Provision for Credit Losses:

The provision for credit losses is determined by the Company as the amount to be added to the ACL loss accounts for various types of financial instruments including loans, investment securities, and off-balance sheet credit exposures after net charge-offs have been deducted to bring the ACL to a level that, in management’s judgment, is necessary to absorb expected credit losses over the lives of the respective financial instruments. See Note 5 for additional information regarding the ACL related to investment securities. The following table presents the components of the provision for credit losses.

	Three Months Ended				Year Ended
(in thousands)	March 31, 2023		March 31, 2022		December 31, 2022
Provision for credit losses on:
Loans	$	750	$	300	$	10,950
Unfunded commitments	—		—		550
Investment securities	2,340		—		—
Total	$	3,090	$	300	$	11,500

Collateral Dependent Loans:

A loan is considered to be collateral dependent when, based upon management’s assessment, the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. For collateral dependent loans, expected credit losses are based on the estimated fair value of the collateral at the balance sheet date, with consideration for estimated selling costs if satisfaction of the loan depends on the sale of the collateral. The following tables present collateral dependent loans by portfolio segment and collateral type, including those loans with and without a related allowance allocation.

March 31, 2023	Collateral Type
(in thousands)	Real Estate		Other Business Assets		Total		Without an Allowance		With an Allowance		Allowance Allocation
Commercial & industrial	$	—	$	2,419	$	2,419	$	1,084	$	1,335	$	506
Owner-occupied CRE	5,905		—		5,905		5,697		208		54
Agricultural	12,656		5,800		18,456		12,751		5,705		166
CRE investment	3,158		—		3,158		2,635		523		7
Construction & land development	650		—		650		650		—		—
Residential first mortgage	1,357		—		1,357		1,357		—		—
Residential junior mortgage	8		—		8		8		—		—
Total loans	$	23,734	$	8,219	$	31,953	$	24,182	$	7,771	$	733

December 31, 2022	Collateral Type
(in thousands)	Real Estate		Other Business Assets		Total		Without an Allowance		With an Allowance		Allowance Allocation
Commercial & industrial	$	—	$	3,475	$	3,475	$	1,927	$	1,548	$	595
Owner-occupied CRE	4,907		—		4,907		4,699		208		53
Agricultural	13,758		6,458		20,216		14,358		5,858		261
CRE investment	2,713		—		2,713		979		1,734		212
Construction & land development	670		—		670		670		—		—
Residential first mortgage	91		—		91		91		—		—
Total loans	$	22,139	$	9,933	$	32,072	$	22,724	$	9,348	$	1,121

Past Due and Nonaccrual Loans:

The following tables present past due loans by portfolio segment.

	March 31, 2023
(in thousands)	30-89 Days Past Due (accruing)			90 Days & Over or nonaccrual			Current			Total
Commercial & industrial	$	256		$	2,874		$	1,326,922		$	1,330,052
Owner-occupied CRE	388			7,128			961,548			969,064
Agricultural	178			18,782			1,046,949			1,065,909
CRE investment	—			4,126			1,142,262			1,146,388
Construction & land development	—			748			332,622			333,370
Residential construction	1,144			—			133,638			134,782
Residential first mortgage	3,852			4,986			1,005,328			1,014,166
Residential junior mortgage	219			196			176,611			177,026
Retail & other	222			55			52,698			52,975
Total loans	$	6,259		$	38,895		$	6,178,578		$	6,223,732
Percent of total loans	0.1		%	0.6		%	99.3		%	100.0		%

	December 31, 2022
(in thousands)	30-89 Days Past Due (accruing)			90 Days & Over or nonaccrual			Current			Total
Commercial & industrial	$	210		$	3,328		$	1,301,281		$	1,304,819
Owner-occupied CRE	833			5,647			948,119			954,599
Agricultural	20			20,416			1,068,171			1,088,607
CRE investment	—			3,832			1,146,117			1,149,949
Construction & land development	—			771			317,829			318,600
Residential construction	—			—			114,392			114,392
Residential first mortgage	3,628			3,780			1,009,527			1,016,935
Residential junior mortgage	236			224			176,872			177,332
Retail & other	261			82			54,923			55,266
Total loans	$	5,188		$	38,080		$	6,137,231		$	6,180,499
Percent of total loans	0.1		%	0.6		%	99.3		%	100.0		%

The following table presents nonaccrual loans by portfolio segment.

	March 31, 2023					December 31, 2022
(in thousands)	Nonaccrual Loans			% of Total		Nonaccrual Loans			% of Total
Commercial & industrial	$	2,874		7	%	$	3,328		9	%
Owner-occupied CRE	7,128			18		5,647			15
Agricultural	18,782			48		20,416			53
CRE investment	4,126			11		3,832			10
Construction & land development	748			2		771			2
Residential construction	—			—		—			—
Residential first mortgage	4,986			13		3,780			10
Residential junior mortgage	196			1		224			1
Retail & other	55			—		82			—
Nonaccrual loans	$	38,895		100	%	$	38,080		100	%
Percent of total loans	0.6		%			0.6		%

Credit Quality Information:

The following tables present total loans by risk categories and gross charge-offs by year of origination. Acquired loans have been included based upon the actual origination date.

March 31, 2023	Amortized Cost Basis by Origination Year
(in thousands)	2023		2022		2021		2020		2019		Prior		Revolving		Revolving to Term		TOTAL
Commercial & industrial
Grades 1-4	$	47,409	$	312,964	$	215,435	$	96,534	$	65,723	$	111,114	$	376,926	$	—	$	1,226,105
Grade 5	95		4,204		4,640		6,548		1,195		11,392		27,894		—		55,968
Grade 6	—		1,358		618		66		—		11,881		6,543		—		20,466
Grade 7	291		3,613		1,894		2,165		2,371		2,411		14,768		—		27,513
Total	$	47,795	$	322,139	$	222,587	$	105,313	$	69,289	$	136,798	$	426,131	$	—	$	1,330,052
Current period gross charge-offs	$	—	$	(77)	$	(26)	$	—	$	—	$	—	$	(15)	$	—	$	(118)
Owner-occupied CRE
Grades 1-4	$	28,513	$	155,362	$	196,641	$	103,973	$	97,039	$	322,852	$	4,773	$	—	$	909,153
Grade 5	1,381		3,134		6,310		4,485		908		17,497		490		—		34,205
Grade 6	—		1,000		355		41		1,575		2,070		250		—		5,291
Grade 7	—		224		684		7,244		1,358		10,905		—		—		20,415
Total	$	29,894	$	159,720	$	203,990	$	115,743	$	100,880	$	353,324	$	5,513	$	—	$	969,064
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Agricultural
Grades 1-4	$	11,930	$	280,631	$	138,443	$	83,733	$	25,089	$	152,730	$	227,727	$	—	$	920,283
Grade 5	1,239		13,311		11,668		1,762		879		39,707		20,436		—		89,002
Grade 6	50		62		1,244		—		52		2,332		195		—		3,935
Grade 7	695		7,199		7,271		786		1,942		23,812		10,984		—		52,689
Total	$	13,914	$	301,203	$	158,626	$	86,281	$	27,962	$	218,581	$	259,342	$	—	$	1,065,909
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
CRE investment
Grades 1-4	$	8,011	$	205,798	$	228,060	$	189,172	$	132,082	$	326,737	$	11,704	$	—	$	1,101,564
Grade 5	2,825		563		1,633		3,552		3,312		21,095		—		—		32,980
Grade 6	—		—		—		—		1,159		3,778		183		—		5,120
Grade 7	—		—		21		523		2,316		3,663		201		—		6,724
Total	$	10,836	$	206,361	$	229,714	$	193,247	$	138,869	$	355,273	$	12,088	$	—	$	1,146,388
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Construction & land development
Grades 1-4	$	6,947	$	119,087	$	144,313	$	11,980	$	8,802	$	36,033	$	5,290	$	—	$	332,452
Grade 5	—		34		—		—		12		92		—		—		138
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		32		—		—		—		748		—		—		780
Total	$	6,947	$	119,153	$	144,313	$	11,980	$	8,814	$	36,873	$	5,290	$	—	$	333,370
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential construction
Grades 1-4	$	5,036	$	114,512	$	12,948	$	1,045	$	121	$	549	$	—	$	—	$	134,211
Grade 5	—		—		571		—		—		—		—		—		571
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		—		—		—		—		—		—		—
Total	$	5,036	$	114,512	$	13,519	$	1,045	$	121	$	549	$	—	$	—	$	134,782
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential first mortgage
Grades 1-4	$	35,309	$	309,434	$	270,665	$	142,741	$	66,489	$	173,612	$	1,426	$	3	$	999,679
Grade 5	—		1,364		776		987		1,776		2,759		—		—		7,662
Grade 6	—		—		—		—		703		—		—		—		703
Grade 7	—		152		477		178		359		4,956		—		—		6,122
Total	$	35,309	$	310,950	$	271,918	$	143,906	$	69,327	$	181,327	$	1,426	$	3	$	1,014,166
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential junior mortgage
Grades 1-4	$	2,784	$	9,905	$	4,291	$	5,055	$	3,071	$	4,780	$	140,169	$	6,570	$	176,625
Grade 5	—		—		—		—		—		—		—		—		—
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		35		205		—		—		23		138		—		401
Total	$	2,784	$	9,940	$	4,496	$	5,055	$	3,071	$	4,803	$	140,307	$	6,570	$	177,026
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Retail & other
Grades 1-4	$	1,646	$	10,603	$	8,010	$	3,659	$	2,622	$	4,451	$	21,885	$	—	$	52,876
Grade 5	—		—		21		—		—		—		—		—		21
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		46		2		1		29		—		—		78
Total	$	1,646	$	10,603	$	8,077	$	3,661	$	2,623	$	4,480	$	21,885	$	—	$	52,975
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	(66)	$	—	$	(66)
Total loans	$	154,161	$	1,554,581	$	1,257,240	$	666,231	$	420,956	$	1,292,008	$	871,982	$	6,573	$	6,223,732

December 31, 2022	Amortized Cost Basis by Origination Year
(in thousands)	2022		2021		2020		2019		2018		Prior		Revolving		Revolving to Term		TOTAL
Commercial & industrial
Grades 1-4	$	317,394	$	226,065	$	101,374	$	68,884	$	50,189	$	77,589	$	360,978	$	—	$	1,202,473
Grade 5	9,938		5,902		10,811		1,530		3,986		4,562		20,617		—		57,346
Grade 6	1,459		2,283		629		511		402		11,653		14,047		—		30,984
Grade 7	556		293		3,211		2,990		775		1,070		5,121		—		14,016
Total	$	329,347	$	234,543	$	116,025	$	73,915	$	55,352	$	94,874	$	400,763	$	—	$	1,304,819
Current period gross charge-offs	$	(38)	$	(41)	$	(2)	$	—	$	(109)	$	—	$	—	$	—	$	(190)
Owner-occupied CRE
Grades 1-4	$	151,391	$	190,313	$	105,156	$	100,606	$	91,479	$	252,574	$	6,734	$	—	$	898,253
Grade 5	5,241		3,192		4,287		2,163		4,791		14,632		348		—		34,654
Grade 6	—		—		763		2,361		—		877		—		—		4,001
Grade 7	227		706		6,344		616		—		9,798		—		—		17,691
Total	$	156,859	$	194,211	$	116,550	$	105,746	$	96,270	$	277,881	$	7,082	$	—	$	954,599
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	(555)	$	—	$	—	$	(555)
Agricultural
Grades 1-4	$	275,208	$	145,272	$	85,413	$	25,463	$	19,687	$	130,849	$	249,033	$	—	$	930,925
Grade 5	13,295		18,178		2,694		1,992		517		43,927		21,199		—		101,802
Grade 6	115		1,457		28		33		—		5,258		429		—		7,320
Grade 7	7,165		2,632		720		1,977		4,611		19,948		11,507		—		48,560
Total	$	295,783	$	167,539	$	88,855	$	29,465	$	24,815	$	199,982	$	282,168	$	—	$	1,088,607
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
CRE investment
Grades 1-4	$	205,930	$	229,252	$	192,527	$	134,301	$	79,649	$	248,595	$	11,383	$	—	$	1,101,637
Grade 5	567		1,649		3,578		4,266		3,086		24,897		—		—		38,043
Grade 6	—		—		—		1,170		2,396		2,483		206		—		6,255
Grade 7	—		—		121		299		245		3,140		209		—		4,014
Total	$	206,497	$	230,901	$	196,226	$	140,036	$	85,376	$	279,115	$	11,798	$	—	$	1,149,949
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Construction & land development
Grades 1-4	$	104,804	$	140,727	$	12,188	$	9,747	$	23,811	$	13,138	$	13,235	$	—	$	317,650
Grade 5	37		—		—		14		—		95		—		—		146
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	33		—		—		—		—		771		—		—		804
Total	$	104,874	$	140,727	$	12,188	$	9,761	$	23,811	$	14,004	$	13,235	$	—	$	318,600
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential construction
Grades 1-4	$	92,417	$	16,774	$	966	$	123	$	336	$	229	$	3,547	$	—	$	114,392
Grade 5	—		—		—		—		—		—		—		—		—
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		—		—		—		—		—		—		—
Total	$	92,417	$	16,774	$	966	$	123	$	336	$	229	$	3,547	$	—	$	114,392
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential first mortgage
Grades 1-4	$	318,628	$	272,011	$	147,857	$	68,975	$	31,208	$	162,153	$	2,080	$	3	$	1,002,915
Grade 5	1,494		758		997		1,803		2,272		465		—		—		7,789
Grade 6	—		—		—		711		—		—		—		—		711
Grade 7	154		329		188		349		197		4,303		—		—		5,520
Total	$	320,276	$	273,098	$	149,042	$	71,838	$	33,677	$	166,921	$	2,080	$	3	$	1,016,935
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	(65)	$	—	$	—	$	(65)
Residential junior mortgage
Grades 1-4	$	10,119	$	4,580	$	5,207	$	3,151	$	1,573	$	3,409	$	142,784	$	5,762	$	176,585
Grade 5	—		—		—		—		—		143		165		—		308
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		206		—		—		—		24		209		—		439
Total	$	10,119	$	4,786	$	5,207	$	3,151	$	1,573	$	3,576	$	143,158	$	5,762	$	177,332
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Retail & other
Grades 1-4	$	12,318	$	8,957	$	4,221	$	3,188	$	1,035	$	24,950	$	492	$	—	$	55,161
Grade 5	—		23		—		—		—		—		—		—		23
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		23		22		2		30		5		—		—		82
Total	$	12,318	$	9,003	$	4,243	$	3,190	$	1,065	$	24,955	$	492	$	—	$	55,266
Current period gross charge-offs	$	—	$	(1)	$	(6)	$	(1)	$	—	$	—	$	(215)	$	—	$	(223)
Total loans	$	1,528,490	$	1,271,582	$	689,302	$	437,225	$	322,275	$	1,061,537	$	864,323	$	5,765	$	6,180,499

An internal loan review function rates loans using a grading system based on different risk categories. Loans with a Substandard grade are considered to have a greater risk of loss and may be assigned allocations for loss based on specific review of the weaknesses observed in the individual credits. Such loans are monitored by the loan review function to help ensure early identification of any deterioration. A description of the loan risk categories used by the Company follows.

Grades 1-4, Pass: Credits exhibit adequate cash flows, appropriate management and financial ratios within industry norms and/or are supported by sufficient collateral. Some credits in these rating categories may require a need for monitoring but elements of concern are not severe enough to warrant an elevated rating.

Grade 5, Watch: Credits with this rating are adequately secured and performing but are being monitored due to the presence of various short-term weaknesses which may include unexpected, short-term adverse financial performance, managerial problems, potential impact of a decline in the entire industry or local economy and delinquency issues. Loans to individuals or loans supported by guarantors with marginal net worth or collateral may be included in this rating category.

Grade 6, Special Mention: Credits with this rating have potential weaknesses that, without the Company’s attention and correction may result in deterioration of repayment prospects. These assets are considered Criticized Assets. Potential weaknesses may include adverse financial trends for the borrower or industry, repeated lack of compliance with Company requests, increasing debt to net worth, serious management conditions and decreasing cash flow.

Grade 7, Substandard: Assets with this rating are characterized by the distinct possibility the Company will sustain some loss if deficiencies are not corrected. All foreclosures, liquidations, and nonaccrual loans are considered to be categorized in this rating, regardless of collateral sufficiency.

Modifications to Borrowers Experiencing Financial Difficulty:

On January 1, 2023, the Company adopted ASU 2022-02, which eliminated the accounting guidance for TDRs by creditors and enhanced the disclosure requirements for certain loan modifications to borrowers experiencing financial difficulty. The following table presents the amortized cost of loans that were both experiencing financial difficulty and were modified during the three months ended March 31, 2023, aggregated by portfolio segment and type of modification.

(in thousands)	Payment Delay		Term Extension		Interest Rate Reduction		Term Extension & Interest Rate Reduction		Total		% of Total Loans
Commercial & industrial	$	—	$	—	$	—	$	—	$	—	—	%
Owner-occupied CRE	—		—		—		—		—		—	%
Agricultural	110		—		—		—		110		0.01	%
CRE investment	—		—		—		—		—		—	%
Construction & land development	—		—		—		—		—		—	%
Residential first mortgage	—		—		—		—		—		—	%
Total	$	110	$	—	$	—	$	—	$	110	—	%

The loans presented in the table above have had more than insignificant payment delays (which the Company has defined as payment delays in excess of six months). These modified loans are closely monitored by the Company to understand the effectiveness of its modification efforts, and such loans generally remain in nonaccrual status pending a sustained period of performance in accordance with the modified terms.

As of March 31, 2023, there were no loans made to borrowers experiencing financial difficulty that were modified during the current period and subsequently defaulted, and there were no commitments to lend additional funds to such debtors.

Troubled Debt Restructuring Disclosures Prior to Adoption of ASU 2022-02:

As of December 31, 2022, the Company had restructured loans totaling $18 million, with a pre-modification balance of $24 million, all of which were also reflected as nonaccrual loans. There were no restructured loans modified during 2022 that subsequently defaulted, and there were no commitments to lend additional funds to such debtors.

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Goodwill and Other Intangibles and Servicing Rights

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangibles and Servicing Rights

Goodwill and Other Intangibles and Servicing Rights

Management periodically reviews the carrying value of its intangible assets to determine if any impairment has occurred, in which case an impairment charge would be recorded as an expense in the period of impairment, or whether changes in circumstances have occurred that would require a revision to the remaining useful life that would affect expense prospectively. In making such determination, management evaluates whether there are any adverse qualitative factors indicating that an impairment may exist, as well as the performance of the underlying operations or assets which give rise to the intangible. Management also regularly monitors economic factors for potential impairment indications on the value of our franchise, stability of deposits, and the wealth client base, underlying our goodwill and other intangibles. Management concluded no impairment was indicated for the three months ended March 31, 2023 and the year ended December 31, 2022. A summary of goodwill and other intangibles was as follows.

(in thousands)	March 31, 2023		December 31, 2022
Goodwill	$	367,387	$	367,387
Core deposit intangibles	30,667		32,701
Customer list intangibles	2,223		2,350
Other intangibles	32,890		35,051
Goodwill and other intangibles, net	$	400,277	$	402,438

Goodwill: A summary of goodwill was as follows. During 2022, goodwill increased due to the Charter acquisition.

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Goodwill:
Goodwill at beginning of year	$	367,387	$	317,189
Acquisitions	—		49,970
Purchase accounting adjustment	—		228
Goodwill at end of period	$	367,387	$	367,387

Other intangible assets: Other intangible assets, consisting of core deposit intangibles and customer list intangibles, are amortized over their estimated finite lives. A summary of other intangible assets was as follows. During 2022, core deposit intangibles increased due to the Charter acquisition.

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Core deposit intangibles:
Gross carrying amount	$	60,724	$	60,724
Accumulated amortization	(30,057)		(28,023)
Net book value	$	30,667	$	32,701
Additions during the period	$	—	$	19,364
Amortization during the period	$	2,034	$	6,108
Customer list intangibles:
Gross carrying amount	$	5,523	$	5,523
Accumulated amortization	(3,300)		(3,173)
Net book value	$	2,223	$	2,350
Amortization during the period	$	127	$	508

Mortgage servicing rights (“MSR”): Mortgage servicing rights are amortized in proportion to and over the period of estimated net servicing income, and assessed for impairment at each reporting date, with the amortization recorded in mortgage income, net, in the consolidated statements of income. Mortgage servicing rights are carried at the lower of the initial capitalized amount, net of accumulated amortization, or estimated fair value, and are included in other assets in the consolidated balance sheets. The Company periodically evaluates its mortgage servicing rights asset for impairment. At each reporting date, impairment is assessed based on estimated fair value using estimated prepayment speeds of the underlying mortgage loans serviced and stratification based on the risk characteristics of the underlying loans (predominantly loan type and note interest rate). A summary of the changes in the mortgage servicing rights asset was as follows.

	Three Months Ended			Year Ended
(in thousands)	March 31, 2023			December 31, 2022
Mortgage servicing rights asset:
MSR asset at beginning of year	$	13,080		$	13,636
Capitalized MSR	204			2,327
Amortization during the period	(740)			(2,883)
MSR asset at end of period	$	12,544		$	13,080
Valuation allowance at beginning of year	$	(500)		$	(1,200)
Reversals	500			700
Valuation allowance at end of period	$	—		$	(500)
MSR asset, net	$	12,544		$	12,580
Fair value of MSR asset at end of period	$	17,708		$	17,215
Residential mortgage loans serviced for others	$	1,620,150		$	1,637,109
Net book value of MSR asset to loans serviced for others	0.77		%	0.77		%

Loan servicing rights (“LSR”): The Company acquired an LSR asset in December 2021 which will be amortized over the estimated remaining loan service period. The Company does not expect to add new loans to this servicing portfolio. A summary of the changes in the LSR asset were as follows.

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Loan servicing rights asset:
LSR asset at beginning of year	$	11,039	$	20,055
Amortization during the period	(552)		(9,016)
LSR asset at end of period	$	10,487	$	11,039
Agricultural loans serviced for others	$	528,891	$	538,392

The following table shows the estimated future amortization expense for amortizing intangible assets and the servicing assets. The projections are based on existing asset balances, the current interest rate environment and prepayment speeds as of March 31, 2023. The actual amortization expense the Company recognizes in any given period may be significantly different depending upon acquisition or sale activities, changes in interest rates, prepayment speeds, market conditions, regulatory requirements and events or circumstances that indicate the carrying amount of an asset may not be recoverable.

(in thousands)	Core deposit intangibles		Customer list intangibles		MSR asset		LSR asset
Year ending December 31,
2023 (remaining nine months)	$	5,555	$	356	$	1,672	$	1,656
2024	6,298		449		2,680		1,962
2025	5,161		449		1,942		1,717
2026	3,983		249		1,434		1,472
2027	3,218		166		1,434		1,227
2028	2,622		166		1,432		981
Thereafter	3,830		388		1,950		1,472
Total	$	30,667	$	2,223	$	12,544	$	10,487

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Short and Long-Term Borrowings

3 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Short and Long-Term Borrowings

Short and Long-Term Borrowings

Short-Term Borrowings:

Short-term borrowings include any borrowing with an original maturity of one year or less. At March 31, 2023, short-term borrowings included $50 million of short-term FHLB advances due in September 2023 with a weighted average rate of 4.26%. At December 31, 2022, short-term borrowings included $317 million of short-term FHLB advances, comprised of $117 million due in January 2023 at a weighted average rate of 4.29% and $200 million due in September 2023 at a weighted average rate of 4.30%.

Long-Term Borrowings:

Long-term borrowings include any borrowing with an original maturity greater than one year. The components of long-term borrowings were as follows.

(in thousands)	March 31, 2023		December 31, 2022
FHLB advances	$	5,000	$	33,000
Junior subordinated debentures	39,928		39,720
Subordinated notes	152,520		152,622
Total long-term borrowings	$	197,448	$	225,342

FHLB Advances: The Federal Home Loan Bank (“FHLB”) advances bear fixed rates, require interest-only monthly payments, and have maturity dates through March 2025. The weighted average rate of the FHLB advances was 1.55% at March 31, 2023 and 1.09% at December 31, 2022.

Junior Subordinated Debentures: Each of the junior subordinated debentures was issued to an underlying statutory trust (the “statutory trusts”), which issued trust preferred securities and common securities and used the proceeds from the issuance of the common and the trust preferred securities to purchase the junior subordinated debentures of the Company. The debentures represent the sole asset of the statutory trusts. All of the common securities of the statutory trusts are owned by the Company. The statutory trusts are not included in the consolidated financial statements. The net effect of all the documents entered into with respect to the trust preferred securities is that the Company, through payments on its debentures, is liable for the distributions and other payments required on the trust preferred securities. Interest on all debentures is current. Any applicable discounts (initially recorded to carry an acquired debenture at its then estimated fair value) are being accreted to interest expense over the remaining life of the debenture. All the junior subordinated debentures are currently callable and may be redeemed in part or in full, at par, plus any accrued but unpaid interest. At both March 31, 2023 and December 31, 2022, approximately $38 million of trust preferred securities qualify as Tier 1 capital.

Subordinated Notes (the “Notes”): In July 2021, the Company completed the private placement of $100 million in fixed-to-floating rate subordinated notes due in 2031, with a fixed annual rate of 3.125% for the first five years, and will reset quarterly thereafter to the then current three-month Secured Overnight Financing Rate (“SOFR”) plus 237.5 basis points. The Notes due in 2031 are redeemable beginning July 15, 2026 and quarterly thereafter on any interest payment date.

In December 2021, Nicolet assumed two subordinated note issuances at a premium as the result of an acquisition. One issuance was $30 million in fixed-to-floating rate subordinated notes due in 2028, with a fixed annual interest rate of 5.875% for the first five years, and will reset quarterly thereafter to the then current three-month LIBOR plus 2.88% The second issuance was $22 million in fixed-to-floating rate subordinated notes due in 2030, with a fixed annual interest rate of 7.00% for the first five years, and will reset quarterly thereafter to the then current SOFR plus 687.5 basis points. The Notes due in 2028 are redeemable beginning June 1, 2023, and quarterly thereafter on any interest payment date, while the Notes due in 2030 are redeemable beginning June 30, 2025, and quarterly thereafter on any interest payment date. All Notes qualify as Tier 2 capital for regulatory purposes.

The following table shows the breakdown of junior subordinated debentures and subordinated notes.

		As of March 31, 2023								As of December 31, 2022
(in thousands)	Maturity Date	Interest  Rate		Par		Unamortized Premium /(Discount) / Debt Issue Costs (1)		Carrying Value		Interest  Rate		Carrying Value
Junior Subordinated Debentures:
Mid-Wisconsin Statutory Trust I (2)	12/15/2035	6.30	%	$	10,310	$	(2,527)	$	7,783	6.20	%	$	7,734
Baylake Capital Trust II (3)	9/30/2036	6.51	%	16,598		(3,115)		13,483		6.08	%	13,424
First Menasha Statutory Trust (4)	3/17/2034	7.70	%	5,155		(476)		4,679		7.53	%	4,668
County Bancorp Statutory Trust II (5)	9/15/2035	6.40	%	6,186		(870)		5,316		6.30	%	5,277
County Bancorp Statutory Trust III (6)	6/15/2036	6.56	%	6,186		(928)		5,258		6.46	%	5,219
Fox River Valley Capital Trust (7)	5/30/2033	6.40	%	3,610		(201)		3,409		6.40	%	3,398
Total				$	48,045	$	(8,117)	$	39,928			$	39,720
Subordinated Notes:
Subordinated Notes due 2031	7/15/2031	3.13	%	$	100,000	$	(681)	$	99,319	3.13	%	$	99,267
County Subordinated Notes due 2028	6/1/2028	5.88	%	30,000		49		30,049		5.88	%	30,119
County Subordinated Notes due 2030	6/30/2030	7.00	%	22,400		752		23,152		7.00	%	23,236
Total				$	152,400	$	120	$	152,520			$	152,622

(1) Represents the remaining unamortized premium or discount on debt issuances assumed in acquisitions, and represents the unamortized debt issue costs for the debt issued directly by Nicolet.

(2) The debentures, assumed in April 2013 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.43%, adjusted quarterly.

(3) The debentures, assumed in April 2016 as a result of an acquisition, have a floating rate of three-month LIBOR plus 1.35%, adjusted quarterly.

(4) The debentures, assumed in April 2017 as the result of an acquisition, have a floating rate of three-month LIBOR plus 2.79%, adjusted quarterly.

(5) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.53%, adjusted quarterly.

(6) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.69%, adjusted quarterly.

(7) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of 5-year swap rate plus 3.40%, which resets every five years.

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Commitment and Contingencies

3 Months Ended

Mar. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, financial guarantees, and standby letters of credit. Such commitments may involve, to varying degrees, elements of credit risk in excess of amounts recognized on the consolidated balance sheets. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instruments for commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and issuing letters of credit as they do for on-balance sheet financial instruments. See Note 6 for information on the allowance for credit losses-unfunded commitments.

A summary of the contract or notional amount of the Company’s exposure to off-balance sheet risk was as follows.

(in thousands)	March 31, 2023		December 31, 2022
Commitments to extend credit	$	1,850,215	$	1,850,601
Financial standby letters of credit	23,246		26,530
Performance standby letters of credit	9,952		9,375

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract, and predominantly included commercial lines of credit with a term of one year or less. The commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements.

Financial and performance standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Financial standby letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party, while performance standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party. Both of these guarantees are primarily issued to support public and private

borrowing arrangements and, generally, have terms of one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Company holds collateral, which may include accounts receivable, inventory, property, equipment, and income-producing properties, supporting those commitments if deemed necessary. In the event the customer does not perform in accordance with the terms of the agreement with the third-party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount. If the commitment is funded, the Company would be entitled to seek recovery from the customer.

Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans held for sale are considered derivative instruments (“mortgage derivatives”) and the contractual amounts were $18 million and $17 million, respectively, at March 31, 2023. In comparison, interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans held for sale totaled $9 million and $9 million, respectively, at December 31, 2022. The net fair value of these mortgage derivatives combined was a net gain of $0.1 million at both March 31, 2023 and December 31, 2022.

Nicolet is party to various pending and threatened claims and legal proceedings arising in the normal course of business activities, some of which may involve claims for substantial amounts. Although Nicolet has developed policies and procedures to minimize legal noncompliance and the impact of claims and other proceedings and endeavored to procure reasonable amounts of insurance coverage, litigation and regulatory actions present an ongoing risk. With respect to all such claims, Nicolet continuously assesses its potential liability based on the allegations and evidence available. If the facts indicate that it is probable that Nicolet will incur a loss and the amount of such loss can be reasonably estimated, Nicolet will establish an accrual for the probable loss. For matters where a loss is not probable, or the amount of the loss cannot be reasonably estimated, Nicolet does not establish an accrual.

Future developments could result in an unfavorable outcome for or resolution of any one or more of the legal proceedings in which Nicolet is a defendant, which may be material to Nicolet’s business or consolidated results of operations or financial condition for a particular fiscal period or periods. Although it is not possible to predict the outcomes of any of these legal proceedings or the range of possible loss, if any, based on the most recent information available, advice of counsel and available insurance coverage, if applicable, management believes that any liability resulting from such proceedings would not have a material adverse effect on our financial position or results of operations.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Fair value represents the estimated price at which an orderly transaction to sell an asset or transfer a liability would take place between market participants at the measurement date under current market conditions (i.e., an exit price concept), and is a market-based measurement versus an entity-specific measurement. The Company records and/or discloses certain financial instruments on a fair value basis. These financial assets and financial liabilities are measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observability of the assumptions used to determine fair value. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from independent sources. Unobservable inputs are inputs that reflect assumptions of the reporting entity about how market participants would price the asset or liability based on the best information available under the circumstances. The three fair value levels are:

•Level 1 – quoted market prices in active markets for identical assets or liabilities that a company has the ability to access at the measurement date

•Level 2 – inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly

•Level 3 – significant unobservable inputs for the asset or liability, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity

In instances where the fair value measurement is based on inputs from different levels, the level within which the entire fair value measurement will be categorized is based on the lowest level input that is significant to the fair value measurement in its entirety. This assessment of the significance of an input requires management judgment.

Recurring basis fair value measurements:

The following table presents the balances of assets and liabilities measured at fair value on a recurring basis for the periods presented.

(in thousands)			Fair Value Measurements Using
Measured at Fair Value on a Recurring Basis:	Total		Level 1		Level 2		Level 3
March 31, 2023
U.S. Treasury securities	$	186,108	$	—	$	186,108	$	—
U.S. government agency securities	9,970		—		9,970		—
State, county and municipals	397,448		—		395,579		1,869
Mortgage-backed securities	311,621		—		310,638		983
Corporate debt securities	118,029		—		112,726		5,303
Securities AFS	$	1,023,176	$	—	$	1,015,021	$	8,155
Other investments (equity securities)	$	3,912	$	3,912	$	—	$	—
December 31, 2022
U.S. Treasury securities	$	183,830	$	—	$	183,830	$	—
U.S. government agency securities	2,100		—		2,100		—
State, county and municipals	398,188		—		396,315		1,873
Mortgage-backed securities	200,932		—		199,951		981
Corporate debt securities	132,568		—		127,269		5,299
Securities AFS	$	917,618	$	—	$	909,465	$	8,153
Other investments (equity securities)	$	4,376	$	4,376	$	—	$	—

The following is a description of the valuation methodologies used by the Company for the assets and liabilities measured at fair value on a recurring basis, noted in the tables above. Where quoted market prices on securities exchanges are available, the investments are classified as Level 1. Level 1 investments primarily include exchange-traded equity securities. If quoted market prices are not available, fair value is generally determined using prices obtained from independent pricing vendors who use pricing models (with typical inputs including benchmark yields, reported trades for similar securities, issuer spreads or relationship to other benchmark quoted securities), or discounted cash flows, and are classified as Level 2. Examples of these investments include U.S. Treasury securities, U.S. government agency securities, mortgage-backed securities, obligations of state, county and municipals, and certain corporate debt securities. Finally, in certain cases where there is limited activity or less transparency around inputs to the estimated fair value, investments are classified within Level 3 of the hierarchy. Examples of these include private corporate debt securities, which are primarily trust preferred security investments, as well as certain municipal bonds and mortgage-backed securities. At March 31, 2023 and December 31, 2022, it was determined that carrying value was the best approximation of fair value for these Level 3 securities, based primarily on the internal analysis on these securities.

The following table presents the changes in Level 3 securities AFS measured at fair value on a recurring basis.

	Three Months Ended		Year Ended
Level 3 Fair Value Measurements:	March 31, 2023		December 31, 2022
Balance at beginning of year	$	8,153	$	8,065
Acquired balance	—		750
Maturities / Paydowns	—		(451)
Unrealized gain / (loss)	2		(211)
Balance at end of period	$	8,155	$	8,153

Nonrecurring basis fair value measurements:

The following table presents the Company’s assets measured at fair value on a nonrecurring basis, aggregated by level in the fair value hierarchy within which those measurements fall.

(in thousands)			Fair Value Measurements Using
Measured at Fair Value on a Nonrecurring Basis:	Total		Level 1		Level 2		Level 3
March 31, 2023
Collateral dependent loans	$	31,220	$	—	$	—	$	31,220
Other real estate owned (“OREO”)	1,975		—		—		1,975
MSR asset	12,544		—		—		12,544
December 31, 2022
Collateral dependent loans	$	30,951	$	—	$	—	$	30,951
OREO	1,975		—		—		1,975
MSR asset	12,580		—		—		12,580

The following is a description of the valuation methodologies used by the Company for the items noted in the table above. For collateral dependent loans, the estimated fair value is based upon the present value of expected future cash flows discounted at the loan’s effective interest rate, the estimated fair value of the underlying collateral with consideration for estimated selling costs if satisfaction of the loan depends on the sale of the collateral, or the estimated liquidity of the note. For OREO, the fair value is based upon the estimated fair value of the underlying collateral adjusted for the expected costs to sell. To estimate the fair value of the MSR asset, the underlying serviced loan pools are stratified by interest rate tranche and term of the loan, and a valuation model is used to calculate the present value of the expected future cash flows for each stratum. The servicing valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as costs to service, a discount rate, ancillary income, default rates and losses, and prepayment speeds. Although some of these assumptions are based on observable market data, other assumptions are based on unobservable estimates of what market participants would use to measure fair value.

Financial instruments:

The carrying amounts and estimated fair values of the Company’s financial instruments are shown below.

March 31, 2023
(in thousands)	Carrying Amount		Estimated Fair Value		Level 1		Level 2		Level 3
Financial assets:
Cash and cash equivalents	$	114,180	$	114,180	$	114,180	$	—	$	—
Certificates of deposit in other banks	11,293		11,181		—		11,181		—
Securities AFS	1,023,176		1,023,176		—		1,015,021		8,155
Other investments, including equity securities	57,482		57,482		3,912		42,982		10,588
Loans held for sale	4,962		5,057		—		5,057		—
Loans, net	6,161,320		5,962,242		—		—		5,962,242
MSR asset	12,544		17,708		—		—		17,708
Accrued interest receivable	21,796		21,796		21,796		—		—
Financial liabilities:
Deposits	$	6,928,579	$	6,918,140	$	—	$	—	$	6,918,140
Short-term borrowings	50,000		50,000		—		50,000		—
Long-term borrowings	197,448		188,203		—		4,855		183,348
Accrued interest payable	4,219		4,219		4,219		—		—

December 31, 2022
(in thousands)	Carrying Amount		Estimated Fair Value		Level 1		Level 2		Level 3
Financial assets:
Cash and cash equivalents	$	154,723	$	154,723	$	154,723	$	—	$	—
Certificates of deposit in other banks	12,518		12,407		—		12,407		—
Securities AFS	917,618		917,618		—		909,465		8,153
Securities HTM	679,128		623,352		—		623,352		—
Other investments, including equity securities	65,286		65,286		4,376		52,093		8,817
Loans held for sale	1,482		1,529		—		1,529		—
Loans, net	6,118,670		5,863,570		—		—		5,863,570
MSR asset	12,580		17,215		—		—		17,215
Accrued interest receivable	21,275		21,275		21,275		—		—
Financial liabilities:
Deposits	$	7,178,921	$	7,172,779	$	—	$	—	$	7,172,779
Short-term borrowings	317,000		317,000		317,000		—		—
Long-term borrowings	225,342		220,513		—		33,001		187,512
Accrued interest payable	4,265		4,265		4,265		—		—

The valuation methodologies for the financial instruments disclosed in the above table are described in Note 18, Fair Value Measurements, in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2023

Accounting Policies [Abstract]

General

General

In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the consolidated balance sheets, statements of income (loss), comprehensive income (loss), changes in stockholders’ equity, and cash flows of Nicolet Bankshares, Inc. (the “Company” or “Nicolet”) and its subsidiaries, as of and for the periods presented, and all such adjustments are of a normal recurring nature. All material intercompany transactions and balances have been eliminated. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the entire year.

These interim consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission and, therefore, certain information and footnote disclosures normally presented in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) have been omitted or abbreviated. These consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and footnotes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

Critical Accounting Policies and Estimates

Critical Accounting Policies and Estimates

Preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions, and judgments that affect the amounts reported in the consolidated financial statements and accompanying disclosures. Estimates are used in accounting for, among other items, the allowance for credit losses, valuation of loans in acquisition transactions, useful lives for depreciation and amortization, fair value of financial instruments, impairment calculations, valuation of deferred tax assets, uncertain income tax positions and contingencies. These estimates are based on management’s knowledge of historical experience, current information, and other factors deemed to be relevant; accordingly, as this information changes, actual results could differ from those estimates. Factors that may cause sensitivity to the aforementioned estimates include but are not limited to: external market factors such as market interest rates and employment rates, changes to operating policies and procedures, changes in applicable banking or tax regulations, and changes to deferred tax estimates. Nicolet considers accounting estimates to be critical to reported financial results if the accounting estimate requires management to make assumptions about matters that are highly uncertain and different estimates that are reasonably likely to occur from period to period, could have a material impact on the financial statements. The accounting estimates we consider to be critical include business combinations and the valuation of loans acquired, the determination of the allowance for credit losses, and income taxes.

There have been no material changes or developments with respect to the assumptions or methodologies that the Company uses when applying critical accounting policies and developing critical accounting estimates as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

Recent Accounting Pronouncements Adopted

Recent Accounting Pronouncements Adopted

In March 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings (“TDRs”) and Vintage Disclosures. This ASU eliminated the accounting guidance for TDRs by creditors and enhanced the disclosure requirements for loan modifications to borrowers experiencing financial difficulty. The ASU also requires public business entities to expand the vintage disclosures to include gross charge-offs by year of origination. The updated guidance is effective for fiscal years beginning after December 15, 2022. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements; however, it resulted in new disclosures. See Note 6 for the new disclosures.

Future Accounting Pronouncements

In March 2023, the FASB issued ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. This ASU permits reporting entities to elect to account for tax equity investments, regardless of the tax credit program for which the income tax credits are received, using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the income tax credits and other income tax benefits received and recognizes the net amortization and income tax credits and other income tax benefits in the income statement as a component of income tax expense. A reporting entity makes an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. This ASU also requires specific disclosures of investments that generate income tax credits and other income tax benefits from a tax credit program for which the entity has elected to apply the proportional amortization method. The updated guidance is effective for fiscal years beginning after December 15, 2023.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. It provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. In December 2022, the FASB issued ASU 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848, which defers the sunset date of the original guidance from December 31, 2022 to December 31, 2024. The Company continues to work through the cessation of LIBOR, including the modification of its loans and other financial instruments with attributes that are either directly or indirectly influenced by LIBOR. The Company expects to utilize the reference rate reform transition guidance, as applicable, and does not expect such adoption to have a material impact on its consolidated financial statements or financial disclosures. The Company will continue to assess the impact as the reference rate transition approaches June 30, 2023.

Reclassifications

Reclassifications

Certain amounts in the 2022 consolidated financial statements have been reclassified to conform to the 2023 presentation. These reclassifications were not material and did not impact previously reported net income or comprehensive income.

Allowance for Credit Losses - Loans

The ACL-Loans represents management’s estimate of expected credit losses in the Company’s loan portfolio at the balance sheet date. To assess the appropriateness of the ACL-Loans, management applies an allocation methodology which focuses on evaluation of qualitative and environmental factors, including but not limited to: (i) evaluation of facts and issues related to specific loans; (ii) management’s ongoing review and grading of the loan portfolio; (iii) consideration of historical loan loss and delinquency experience on each portfolio segment; (iv) trends in past due and nonperforming loans; (v) the risk characteristics of the various loan segments; (vi) changes in the size and character of the loan portfolio; (vii) concentrations of loans to specific borrowers or industries; (viii) existing economic conditions; (ix) the fair value of underlying collateral; and (x) other qualitative and quantitative factors which could affect expected credit losses. Assessing these numerous factors involves significant judgment.

Management allocates the ACL-Loans by pools of risk within each loan portfolio segment. The allocation methodology consists of the following components. First, a specific reserve is established for individually evaluated credit-deteriorated loans, which management defines as nonaccrual credit relationships over $250,000, collateral dependent loans, purchased credit deteriorated loans, and other loans with evidence of credit deterioration. The specific reserve in the ACL-Loans for these credit

deteriorated loans is equal to the aggregate collateral or discounted cash flow shortfall. Management allocates the ACL-Loans with historical loss rates by loan segment. The loss factors are measured on a quarterly basis and applied to each loan segment based on current loan balances and projected for their expected remaining life. Next, management allocates the ACL-Loans using the qualitative factors mentioned above. Consideration is given to those current qualitative or environmental factors that are likely to cause estimated credit losses as of the evaluation date to differ from the historical loss experience of each loan segment. Lastly, management considers reasonable and supportable forecasts to assess the collectability of future cash flows.

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Acquisition (Tables)

3 Months Ended

Mar. 31, 2023

Business Combination and Asset Acquisition [Abstract]

Schedule of Assets Acquired and Liabilities Assumed and Preliminary Purchase Price Allocation

A summary of the assets acquired and liabilities assumed in the Charter transaction, as of the acquisition date, including the purchase price allocation was as follows.

(In millions, except share data)	Acquired from Charter		Fair Value Adjustments		Estimated Fair Value
Assets Acquired:
Cash and cash equivalents	$	10	$	—	$	10
Investment securities	218		—		218
Loans	848		(21)		827
ACL-Loans	(9)		7		(2)
Premises and equipment	9		1		10
BOLI	29		—		29
Core deposit intangible	—		19		19
Other assets	5		5		10
Total assets	$	1,110	$	11	$	1,121
Liabilities Assumed:
Deposits	$	869	$	1	$	870
Borrowings	161		—		161
Other liabilities	3		—		3
Total liabilities	$	1,033	$	1	$	1,034
Net assets acquired					$	87
Purchase Price:
Nicolet common stock issued (in shares)					1,262,360
Value of Nicolet common stock consideration					$	98
Cash consideration paid					39
Total purchase price					$	137
Preliminary goodwill					$	50

The carrying amount of these loans at acquisition was as follows.

(In thousands)	August 26, 2022
Purchase price of PCD loans at acquisition	$	24,031
Allowance for credit losses on PCD loans at acquisition	1,709
Par value of PCD acquired loans at acquisition	$	25,740

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Earnings per Common Share (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Common Share

Presented below are the calculations for basic and diluted earnings per common share.

	Three Months Ended March 31,
(In thousands, except per share data)	2023		2022
Net income (loss)	$	(8,898)	$	24,164
Weighted average common shares outstanding	14,694		13,649
Effect of dilutive common stock awards	—		566
Diluted weighted average common shares outstanding	14,694		14,215
Basic earnings (loss) per common share*	$	(0.61)	$	1.77
Diluted earnings (loss) per common share*	$	(0.61)	$	1.70

*Cumulative quarterly per share performance may not equal annual per share totals due to the effects of the amount and timing of capital increases. When computing earnings per share for an interim period, the denominator is based on the weighted average shares outstanding during the interim period, and not on an annualized weighted average basis. Accordingly, the sum of the earnings per share data for the quarters will not necessarily equal the year to date earnings per share data.

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Weighted Average Assumption for Stock Option

The weighted average assumptions used in the Black-Scholes model for valuing stock option grants for the three months ended March 31, 2022 were as follows. There were no stock options granted for the three months ended March 31, 2023.

	Three Months Ended March 31, 2022
Dividend yield	—		%
Expected volatility	30		%
Risk-free interest rate	1.77		%
Expected average life	7 years
Weighted average per share fair value of options	$	32.99

Schedule of Stock Options Outstanding

A summary of the Company’s stock option activity is summarized below.

Stock Options	Option Shares Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Life (Years)	Aggregate Intrinsic Value (in thousands)
Outstanding - December 31, 2022	1,853,064	$	59.79
Granted	—	—
Exercise of stock options *	(5,329)	34.82
Outstanding - March 31, 2023	1,847,735	$	59.86	5.7	$	16,359
Exercisable - March 31, 2023	1,278,592	$	52.22	4.6	$	16,302

* The terms of the stock option agreements permit having a number of shares of stock withheld, the fair market value of which as of the date of exercise is sufficient to satisfy the exercise price and/or tax withholding requirements. For the three months ended March 31, 2023, 492 such shares were withheld by the Company.

Schedule of Restricted Stock Awards

A summary of the Company’s restricted stock activity is summarized below.

Restricted Stock	Weighted Average Grant Date Fair Value		Restricted Shares Outstanding
Outstanding - December 31, 2022	$	76.49	73,490
Granted	—		—
Vested	72.00		(500)
Outstanding - March 31, 2023	$	76.52	72,990

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Securities and Other Investments (Tables)

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Amortized Cost and Fair Value of Securities AFS

The amortized cost and fair value of securities AFS and HTM are summarized as follows.

	March 31, 2023
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities AFS:
U.S. Treasury securities	$	192,166	$	—	$	6,058	$	186,108
U.S. government agency securities	9,959		36		25		9,970
State, county and municipals	428,643		692		31,887		397,448
Mortgage-backed securities	350,712		—		39,091		311,621
Corporate debt securities	125,349		—		7,320		118,029
Total securities AFS	$	1,106,829	$	728	$	84,381	$	1,023,176

	December 31, 2022
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities AFS:
U.S. Treasury securities	$	192,116	$	—	$	8,286	$	183,830
U.S. government agency securities	2,133		—		33		2,100
State, county and municipals	433,733		123		35,668		398,188
Mortgage-backed securities	227,650		10		26,728		200,932
Corporate debt securities	140,712		3		8,147		132,568
Total securities AFS	$	996,344	$	136	$	78,862	$	917,618
Securities HTM:
U.S. Treasury securities	$	497,648	$	—	$	35,722	$	461,926
U.S. government agency securities	8,744		46		—		8,790
State, county and municipals	34,874		—		3,349		31,525
Mortgage-backed securities	137,862		—		16,751		121,111
Total securities HTM	$	679,128	$	46	$	55,822	$	623,352

Schedule of Amortized Cost and Fair Value of Securities HTM

The amortized cost and fair value of securities AFS and HTM are summarized as follows.

	March 31, 2023
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities AFS:
U.S. Treasury securities	$	192,166	$	—	$	6,058	$	186,108
U.S. government agency securities	9,959		36		25		9,970
State, county and municipals	428,643		692		31,887		397,448
Mortgage-backed securities	350,712		—		39,091		311,621
Corporate debt securities	125,349		—		7,320		118,029
Total securities AFS	$	1,106,829	$	728	$	84,381	$	1,023,176

	December 31, 2022
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities AFS:
U.S. Treasury securities	$	192,116	$	—	$	8,286	$	183,830
U.S. government agency securities	2,133		—		33		2,100
State, county and municipals	433,733		123		35,668		398,188
Mortgage-backed securities	227,650		10		26,728		200,932
Corporate debt securities	140,712		3		8,147		132,568
Total securities AFS	$	996,344	$	136	$	78,862	$	917,618
Securities HTM:
U.S. Treasury securities	$	497,648	$	—	$	35,722	$	461,926
U.S. government agency securities	8,744		46		—		8,790
State, county and municipals	34,874		—		3,349		31,525
Mortgage-backed securities	137,862		—		16,751		121,111
Total securities HTM	$	679,128	$	46	$	55,822	$	623,352

Schedule of Proceeds and Realized Gains or Losses from the Sale of AFS and HTM Securities

Proceeds and realized gains or losses from the sale of AFS and HTM securities were as follows.

	Three Months Ended March 31,
(in thousands)	2023		2022
Securities AFS:
Gross gains	$	126	$	20
Gross losses	(339)		(5)
Gains (losses) on sales of securities AFS, net	$	(213)	$	15
Proceeds from sales of securities AFS	$	22,565	$	3,400
Securities HTM:
Gross gains	$	—	$	—
Gross losses	(37,723)		—
Gains (losses) on sales of securities HTM, net	$	(37,723)	$	—
Proceeds from sales of securities HTM	$	460,051	$	—

Schedule of Unrealized Losses and Fair Value of Investment Securities

The following table presents gross unrealized losses and the related estimated fair value of investment securities for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position.

	March 31, 2023
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Number of Securities
Securities AFS:
U.S. Treasury securities	$	456	$	8	$	185,640	$	6,050	$	186,096	$	6,058	9
U.S. government agency securities	2,718		20		107		5		2,825		25		9
State, county and municipals	79,617		1,826		247,397		30,061		327,014		31,887		608
Mortgage-backed securities	35,724		2,158		275,897		36,933		311,621		39,091		464
Corporate debt securities	68,654		2,583		44,995		4,737		113,649		7,320		75
Total	$	187,169	$	6,595	$	754,036	$	77,786	$	941,205	$	84,381	1,165

	December 31, 2022
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Number of Securities
Securities AFS:
U.S. Treasury securities	$	448	$	14	$	183,382	$	8,272	$	183,830	$	8,286	9
U.S. government agency securities	2,083		32		17		1		2,100		33		9
State, county and municipals	277,546		18,041		86,569		17,627		364,115		35,668		812
Mortgage-backed securities	102,108		11,320		95,614		15,408		197,722		26,728		376
Corporate debt securities	114,887		6,186		12,938		1,961		127,825		8,147		90
Total	$	497,072	$	35,593	$	378,520	$	43,269	$	875,592	$	78,862	1,296
Securities HTM:
U.S. Treasury securities	$	—	$	—	$	461,926	$	35,722	$	461,926	$	35,722	6
State, county and municipals	17,591		1,594		11,654		1,755		29,245		3,349		58
Mortgage-backed securities	68,108		8,029		53,003		8,722		121,111		16,751		106
Total	$	85,699	$	9,623	$	526,583	$	46,199	$	612,282	$	55,822	170

Schedule of Amortized Cost and Fair Value of Investment Securities by Contractual Maturity

The amortized cost and fair value of investment securities by contractual maturity are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties; as this is particularly inherent in mortgage-backed securities, these securities are not included in the maturity categories below.

As of March 31, 2023	Securities AFS
(in thousands)	Amortized Cost		Fair Value
Due in less than one year	$	225,921	$	223,243
Due in one year through five years	173,794		163,788
Due after five years through ten years	223,776		201,296
Due after ten years	132,626		123,228
	756,117		711,555
Mortgage-backed securities	350,712		311,621
Total investment securities	$	1,106,829	$	1,023,176

Summary of Other Investments

The carrying value of other investments are summarized as follows.

	March 31, 2023		December 31, 2022
(in thousands)	Amount		Amount
Federal Reserve Bank stock	$	32,708	$	32,219
Federal Home Loan Bank (“FHLB”) stock	10,174		18,625
Equity securities with readily determinable fair values	3,912		4,376
Other investments	10,688		10,066
Total other investments	$	57,482	$	65,286

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Loans, Allowance for Credit Losses - Loans, and Credit Quality (Tables)

3 Months Ended

Mar. 31, 2023

Receivables [Abstract]

Schedule of Loan Composition by Portfolio Segment

The loan composition is summarized as follows.

	March 31, 2023					December 31, 2022
(in thousands)	Amount			% of Total		Amount			% of Total
Commercial & industrial	$	1,330,052		21	%	$	1,304,819		21	%
Owner-occupied commercial real estate (“CRE”)	969,064			16		954,599			15
Agricultural	1,065,909			17		1,088,607			18
CRE investment	1,146,388			19		1,149,949			19
Construction & land development	333,370			5		318,600			5
Residential construction	134,782			2		114,392			2
Residential first mortgage	1,014,166			16		1,016,935			16
Residential junior mortgage	177,026			3		177,332			3
Retail & other	52,975			1		55,266			1
Loans	6,223,732			100	%	6,180,499			100	%
Less allowance for credit losses - Loans (“ACL-Loans”)	62,412					61,829
Loans, net	$	6,161,320				$	6,118,670
Allowance for credit losses - Loans to loans	1.00		%			1.00		%

Schedule of Changes in Allowance for Credit Losses

A roll forward of the allowance for credit losses - loans is summarized as follows.

	Three Months Ended				Year Ended
(in thousands)	March 31, 2023		March 31, 2022		December 31, 2022
Beginning balance	$	61,829	$	49,672	$	49,672
ACL on PCD loans acquired	—		—		1,937
Provision for credit losses	750		300		10,950
Charge-offs	(184)		(100)		(1,033)
Recoveries	17		34		303
Net (charge-offs) recoveries	(167)		(66)		(730)
Ending balance	$	62,412	$	49,906	$	61,829

The following tables present the balance and activity in the ACL-Loans by portfolio segment.

	Three Months Ended March 31, 2023
(in thousands)	Commercial & industrial			Owner- occupied CRE			Agricultural			CRE investment			Construction & land development			Residential construction			Residential first mortgage			Residential junior mortgage			Retail & other			Total
ACL-Loans
Beginning balance	$	16,350		$	9,138		$	9,762		$	12,744		$	2,572		$	1,412		$	6,976		$	1,846		$	1,029		$	61,829
Provision	457			172			(328)			210			106			262			(206)			(31)			108			750
Charge-offs	(118)			—			—			—			—			—			—			—			(66)			(184)
Recoveries	10			—			2			—			—			—			1			—			4			17
Net (charge-offs) recoveries	(108)			—			2			—			—			—			1			—			(62)			(167)
Ending balance	$	16,699		$	9,310		$	9,436		$	12,954		$	2,678		$	1,674		$	6,771		$	1,815		$	1,075		$	62,412
As % of ACL-Loans	27		%	15		%	15		%	21		%	4		%	2		%	11		%	3		%	2		%	100		%

	Year Ended December 31, 2022
(in thousands)	Commercial & industrial			Owner- occupied CRE			Agricultural			CRE investment			Construction & land development			Residential construction			Residential first mortgage			Residential junior mortgage			Retail & other			Total
ACL-Loans
Beginning balance	$	12,613		$	7,222		$	9,547		$	8,462		$	1,812		$	900		$	6,844		$	1,340		$	932		$	49,672
ACL on PCD loans	1,408			384			—			38			2			—			93			12			—			1,937
Provision	2,415			2,087			215			4,075			758			512			96			493			299			10,950
Charge-offs	(190)			(555)			—			—			—			—			(65)			—			(223)			(1,033)
Recoveries	104			—			—			169			—			—			8			1			21			303
Net (charge-offs) recoveries	(86)			(555)			—			169			—			—			(57)			1			(202)			(730)
Ending balance	$	16,350		$	9,138		$	9,762		$	12,744		$	2,572		$	1,412		$	6,976		$	1,846		$	1,029		$	61,829
As % of ACL-Loans	26		%	15		%	16		%	21		%	4		%	2		%	11		%	3		%	2		%	100		%

Schedule of Provision for Credit Losses

The following table presents the components of the provision for credit losses.

	Three Months Ended				Year Ended
(in thousands)	March 31, 2023		March 31, 2022		December 31, 2022
Provision for credit losses on:
Loans	$	750	$	300	$	10,950
Unfunded commitments	—		—		550
Investment securities	2,340		—		—
Total	$	3,090	$	300	$	11,500

Schedule of Collateral Dependent Loans by Portfolio Segment

The following tables present collateral dependent loans by portfolio segment and collateral type, including those loans with and without a related allowance allocation.

March 31, 2023	Collateral Type
(in thousands)	Real Estate		Other Business Assets		Total		Without an Allowance		With an Allowance		Allowance Allocation
Commercial & industrial	$	—	$	2,419	$	2,419	$	1,084	$	1,335	$	506
Owner-occupied CRE	5,905		—		5,905		5,697		208		54
Agricultural	12,656		5,800		18,456		12,751		5,705		166
CRE investment	3,158		—		3,158		2,635		523		7
Construction & land development	650		—		650		650		—		—
Residential first mortgage	1,357		—		1,357		1,357		—		—
Residential junior mortgage	8		—		8		8		—		—
Total loans	$	23,734	$	8,219	$	31,953	$	24,182	$	7,771	$	733

December 31, 2022	Collateral Type
(in thousands)	Real Estate		Other Business Assets		Total		Without an Allowance		With an Allowance		Allowance Allocation
Commercial & industrial	$	—	$	3,475	$	3,475	$	1,927	$	1,548	$	595
Owner-occupied CRE	4,907		—		4,907		4,699		208		53
Agricultural	13,758		6,458		20,216		14,358		5,858		261
CRE investment	2,713		—		2,713		979		1,734		212
Construction & land development	670		—		670		670		—		—
Residential first mortgage	91		—		91		91		—		—
Total loans	$	22,139	$	9,933	$	32,072	$	22,724	$	9,348	$	1,121

Schedule of Past Due Loans by Portfolio Segment

The following tables present past due loans by portfolio segment.

	March 31, 2023
(in thousands)	30-89 Days Past Due (accruing)			90 Days & Over or nonaccrual			Current			Total
Commercial & industrial	$	256		$	2,874		$	1,326,922		$	1,330,052
Owner-occupied CRE	388			7,128			961,548			969,064
Agricultural	178			18,782			1,046,949			1,065,909
CRE investment	—			4,126			1,142,262			1,146,388
Construction & land development	—			748			332,622			333,370
Residential construction	1,144			—			133,638			134,782
Residential first mortgage	3,852			4,986			1,005,328			1,014,166
Residential junior mortgage	219			196			176,611			177,026
Retail & other	222			55			52,698			52,975
Total loans	$	6,259		$	38,895		$	6,178,578		$	6,223,732
Percent of total loans	0.1		%	0.6		%	99.3		%	100.0		%

	December 31, 2022
(in thousands)	30-89 Days Past Due (accruing)			90 Days & Over or nonaccrual			Current			Total
Commercial & industrial	$	210		$	3,328		$	1,301,281		$	1,304,819
Owner-occupied CRE	833			5,647			948,119			954,599
Agricultural	20			20,416			1,068,171			1,088,607
CRE investment	—			3,832			1,146,117			1,149,949
Construction & land development	—			771			317,829			318,600
Residential construction	—			—			114,392			114,392
Residential first mortgage	3,628			3,780			1,009,527			1,016,935
Residential junior mortgage	236			224			176,872			177,332
Retail & other	261			82			54,923			55,266
Total loans	$	5,188		$	38,080		$	6,137,231		$	6,180,499
Percent of total loans	0.1		%	0.6		%	99.3		%	100.0		%

Schedule of Nonaccrual Loans by Portfolio Segment

The following table presents nonaccrual loans by portfolio segment.

	March 31, 2023					December 31, 2022
(in thousands)	Nonaccrual Loans			% of Total		Nonaccrual Loans			% of Total
Commercial & industrial	$	2,874		7	%	$	3,328		9	%
Owner-occupied CRE	7,128			18		5,647			15
Agricultural	18,782			48		20,416			53
CRE investment	4,126			11		3,832			10
Construction & land development	748			2		771			2
Residential construction	—			—		—			—
Residential first mortgage	4,986			13		3,780			10
Residential junior mortgage	196			1		224			1
Retail & other	55			—		82			—
Nonaccrual loans	$	38,895		100	%	$	38,080		100	%
Percent of total loans	0.6		%			0.6		%

Schedule of Loans by Risk Categories and Gross Charge-offs

The following tables present total loans by risk categories and gross charge-offs by year of origination. Acquired loans have been included based upon the actual origination date.

March 31, 2023	Amortized Cost Basis by Origination Year
(in thousands)	2023		2022		2021		2020		2019		Prior		Revolving		Revolving to Term		TOTAL
Commercial & industrial
Grades 1-4	$	47,409	$	312,964	$	215,435	$	96,534	$	65,723	$	111,114	$	376,926	$	—	$	1,226,105
Grade 5	95		4,204		4,640		6,548		1,195		11,392		27,894		—		55,968
Grade 6	—		1,358		618		66		—		11,881		6,543		—		20,466
Grade 7	291		3,613		1,894		2,165		2,371		2,411		14,768		—		27,513
Total	$	47,795	$	322,139	$	222,587	$	105,313	$	69,289	$	136,798	$	426,131	$	—	$	1,330,052
Current period gross charge-offs	$	—	$	(77)	$	(26)	$	—	$	—	$	—	$	(15)	$	—	$	(118)
Owner-occupied CRE
Grades 1-4	$	28,513	$	155,362	$	196,641	$	103,973	$	97,039	$	322,852	$	4,773	$	—	$	909,153
Grade 5	1,381		3,134		6,310		4,485		908		17,497		490		—		34,205
Grade 6	—		1,000		355		41		1,575		2,070		250		—		5,291
Grade 7	—		224		684		7,244		1,358		10,905		—		—		20,415
Total	$	29,894	$	159,720	$	203,990	$	115,743	$	100,880	$	353,324	$	5,513	$	—	$	969,064
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Agricultural
Grades 1-4	$	11,930	$	280,631	$	138,443	$	83,733	$	25,089	$	152,730	$	227,727	$	—	$	920,283
Grade 5	1,239		13,311		11,668		1,762		879		39,707		20,436		—		89,002
Grade 6	50		62		1,244		—		52		2,332		195		—		3,935
Grade 7	695		7,199		7,271		786		1,942		23,812		10,984		—		52,689
Total	$	13,914	$	301,203	$	158,626	$	86,281	$	27,962	$	218,581	$	259,342	$	—	$	1,065,909
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
CRE investment
Grades 1-4	$	8,011	$	205,798	$	228,060	$	189,172	$	132,082	$	326,737	$	11,704	$	—	$	1,101,564
Grade 5	2,825		563		1,633		3,552		3,312		21,095		—		—		32,980
Grade 6	—		—		—		—		1,159		3,778		183		—		5,120
Grade 7	—		—		21		523		2,316		3,663		201		—		6,724
Total	$	10,836	$	206,361	$	229,714	$	193,247	$	138,869	$	355,273	$	12,088	$	—	$	1,146,388
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Construction & land development
Grades 1-4	$	6,947	$	119,087	$	144,313	$	11,980	$	8,802	$	36,033	$	5,290	$	—	$	332,452
Grade 5	—		34		—		—		12		92		—		—		138
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		32		—		—		—		748		—		—		780
Total	$	6,947	$	119,153	$	144,313	$	11,980	$	8,814	$	36,873	$	5,290	$	—	$	333,370
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential construction
Grades 1-4	$	5,036	$	114,512	$	12,948	$	1,045	$	121	$	549	$	—	$	—	$	134,211
Grade 5	—		—		571		—		—		—		—		—		571
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		—		—		—		—		—		—		—
Total	$	5,036	$	114,512	$	13,519	$	1,045	$	121	$	549	$	—	$	—	$	134,782
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential first mortgage
Grades 1-4	$	35,309	$	309,434	$	270,665	$	142,741	$	66,489	$	173,612	$	1,426	$	3	$	999,679
Grade 5	—		1,364		776		987		1,776		2,759		—		—		7,662
Grade 6	—		—		—		—		703		—		—		—		703
Grade 7	—		152		477		178		359		4,956		—		—		6,122
Total	$	35,309	$	310,950	$	271,918	$	143,906	$	69,327	$	181,327	$	1,426	$	3	$	1,014,166
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential junior mortgage
Grades 1-4	$	2,784	$	9,905	$	4,291	$	5,055	$	3,071	$	4,780	$	140,169	$	6,570	$	176,625
Grade 5	—		—		—		—		—		—		—		—		—
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		35		205		—		—		23		138		—		401
Total	$	2,784	$	9,940	$	4,496	$	5,055	$	3,071	$	4,803	$	140,307	$	6,570	$	177,026
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Retail & other
Grades 1-4	$	1,646	$	10,603	$	8,010	$	3,659	$	2,622	$	4,451	$	21,885	$	—	$	52,876
Grade 5	—		—		21		—		—		—		—		—		21
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		46		2		1		29		—		—		78
Total	$	1,646	$	10,603	$	8,077	$	3,661	$	2,623	$	4,480	$	21,885	$	—	$	52,975
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	(66)	$	—	$	(66)
Total loans	$	154,161	$	1,554,581	$	1,257,240	$	666,231	$	420,956	$	1,292,008	$	871,982	$	6,573	$	6,223,732

December 31, 2022	Amortized Cost Basis by Origination Year
(in thousands)	2022		2021		2020		2019		2018		Prior		Revolving		Revolving to Term		TOTAL
Commercial & industrial
Grades 1-4	$	317,394	$	226,065	$	101,374	$	68,884	$	50,189	$	77,589	$	360,978	$	—	$	1,202,473
Grade 5	9,938		5,902		10,811		1,530		3,986		4,562		20,617		—		57,346
Grade 6	1,459		2,283		629		511		402		11,653		14,047		—		30,984
Grade 7	556		293		3,211		2,990		775		1,070		5,121		—		14,016
Total	$	329,347	$	234,543	$	116,025	$	73,915	$	55,352	$	94,874	$	400,763	$	—	$	1,304,819
Current period gross charge-offs	$	(38)	$	(41)	$	(2)	$	—	$	(109)	$	—	$	—	$	—	$	(190)
Owner-occupied CRE
Grades 1-4	$	151,391	$	190,313	$	105,156	$	100,606	$	91,479	$	252,574	$	6,734	$	—	$	898,253
Grade 5	5,241		3,192		4,287		2,163		4,791		14,632		348		—		34,654
Grade 6	—		—		763		2,361		—		877		—		—		4,001
Grade 7	227		706		6,344		616		—		9,798		—		—		17,691
Total	$	156,859	$	194,211	$	116,550	$	105,746	$	96,270	$	277,881	$	7,082	$	—	$	954,599
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	(555)	$	—	$	—	$	(555)
Agricultural
Grades 1-4	$	275,208	$	145,272	$	85,413	$	25,463	$	19,687	$	130,849	$	249,033	$	—	$	930,925
Grade 5	13,295		18,178		2,694		1,992		517		43,927		21,199		—		101,802
Grade 6	115		1,457		28		33		—		5,258		429		—		7,320
Grade 7	7,165		2,632		720		1,977		4,611		19,948		11,507		—		48,560
Total	$	295,783	$	167,539	$	88,855	$	29,465	$	24,815	$	199,982	$	282,168	$	—	$	1,088,607
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
CRE investment
Grades 1-4	$	205,930	$	229,252	$	192,527	$	134,301	$	79,649	$	248,595	$	11,383	$	—	$	1,101,637
Grade 5	567		1,649		3,578		4,266		3,086		24,897		—		—		38,043
Grade 6	—		—		—		1,170		2,396		2,483		206		—		6,255
Grade 7	—		—		121		299		245		3,140		209		—		4,014
Total	$	206,497	$	230,901	$	196,226	$	140,036	$	85,376	$	279,115	$	11,798	$	—	$	1,149,949
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Construction & land development
Grades 1-4	$	104,804	$	140,727	$	12,188	$	9,747	$	23,811	$	13,138	$	13,235	$	—	$	317,650
Grade 5	37		—		—		14		—		95		—		—		146
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	33		—		—		—		—		771		—		—		804
Total	$	104,874	$	140,727	$	12,188	$	9,761	$	23,811	$	14,004	$	13,235	$	—	$	318,600
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential construction
Grades 1-4	$	92,417	$	16,774	$	966	$	123	$	336	$	229	$	3,547	$	—	$	114,392
Grade 5	—		—		—		—		—		—		—		—		—
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		—		—		—		—		—		—		—		—
Total	$	92,417	$	16,774	$	966	$	123	$	336	$	229	$	3,547	$	—	$	114,392
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Residential first mortgage
Grades 1-4	$	318,628	$	272,011	$	147,857	$	68,975	$	31,208	$	162,153	$	2,080	$	3	$	1,002,915
Grade 5	1,494		758		997		1,803		2,272		465		—		—		7,789
Grade 6	—		—		—		711		—		—		—		—		711
Grade 7	154		329		188		349		197		4,303		—		—		5,520
Total	$	320,276	$	273,098	$	149,042	$	71,838	$	33,677	$	166,921	$	2,080	$	3	$	1,016,935
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	(65)	$	—	$	—	$	(65)
Residential junior mortgage
Grades 1-4	$	10,119	$	4,580	$	5,207	$	3,151	$	1,573	$	3,409	$	142,784	$	5,762	$	176,585
Grade 5	—		—		—		—		—		143		165		—		308
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		206		—		—		—		24		209		—		439
Total	$	10,119	$	4,786	$	5,207	$	3,151	$	1,573	$	3,576	$	143,158	$	5,762	$	177,332
Current period gross charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Retail & other
Grades 1-4	$	12,318	$	8,957	$	4,221	$	3,188	$	1,035	$	24,950	$	492	$	—	$	55,161
Grade 5	—		23		—		—		—		—		—		—		23
Grade 6	—		—		—		—		—		—		—		—		—
Grade 7	—		23		22		2		30		5		—		—		82
Total	$	12,318	$	9,003	$	4,243	$	3,190	$	1,065	$	24,955	$	492	$	—	$	55,266
Current period gross charge-offs	$	—	$	(1)	$	(6)	$	(1)	$	—	$	—	$	(215)	$	—	$	(223)
Total loans	$	1,528,490	$	1,271,582	$	689,302	$	437,225	$	322,275	$	1,061,537	$	864,323	$	5,765	$	6,180,499

Schedule of Loan Modifications and Financial Impact of Loan Modifications by Portfolio Segment

The following table presents the amortized cost of loans that were both experiencing financial difficulty and were modified during the three months ended March 31, 2023, aggregated by portfolio segment and type of modification.

(in thousands)	Payment Delay		Term Extension		Interest Rate Reduction		Term Extension & Interest Rate Reduction		Total		% of Total Loans
Commercial & industrial	$	—	$	—	$	—	$	—	$	—	—	%
Owner-occupied CRE	—		—		—		—		—		—	%
Agricultural	110		—		—		—		110		0.01	%
CRE investment	—		—		—		—		—		—	%
Construction & land development	—		—		—		—		—		—	%
Residential first mortgage	—		—		—		—		—		—	%
Total	$	110	$	—	$	—	$	—	$	110	—	%

The loans presented in the table above have had more than insignificant payment delays (which the Company has defined as payment delays in excess of six months). These modified loans are closely monitored by the Company to understand the effectiveness of its modification efforts, and such loans generally remain in nonaccrual status pending a sustained period of performance in accordance with the modified terms.

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Goodwill and Other Intangibles and Servicing Rights (Tables)

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Intangible Assets

A summary of goodwill and other intangibles was as follows.

(in thousands)	March 31, 2023		December 31, 2022
Goodwill	$	367,387	$	367,387
Core deposit intangibles	30,667		32,701
Customer list intangibles	2,223		2,350
Other intangibles	32,890		35,051
Goodwill and other intangibles, net	$	400,277	$	402,438

Schedule of Goodwill

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Goodwill:
Goodwill at beginning of year	$	367,387	$	317,189
Acquisitions	—		49,970
Purchase accounting adjustment	—		228
Goodwill at end of period	$	367,387	$	367,387

Schedule of Other Intangible Assets

A summary of other intangible assets was as follows. During 2022, core deposit intangibles increased due to the Charter acquisition.

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Core deposit intangibles:
Gross carrying amount	$	60,724	$	60,724
Accumulated amortization	(30,057)		(28,023)
Net book value	$	30,667	$	32,701
Additions during the period	$	—	$	19,364
Amortization during the period	$	2,034	$	6,108
Customer list intangibles:
Gross carrying amount	$	5,523	$	5,523
Accumulated amortization	(3,300)		(3,173)
Net book value	$	2,223	$	2,350
Amortization during the period	$	127	$	508

Schedule of Mortgage and Loan Servicing Rights

A summary of the changes in the mortgage servicing rights asset was as follows.

	Three Months Ended			Year Ended
(in thousands)	March 31, 2023			December 31, 2022
Mortgage servicing rights asset:
MSR asset at beginning of year	$	13,080		$	13,636
Capitalized MSR	204			2,327
Amortization during the period	(740)			(2,883)
MSR asset at end of period	$	12,544		$	13,080
Valuation allowance at beginning of year	$	(500)		$	(1,200)
Reversals	500			700
Valuation allowance at end of period	$	—		$	(500)
MSR asset, net	$	12,544		$	12,580
Fair value of MSR asset at end of period	$	17,708		$	17,215
Residential mortgage loans serviced for others	$	1,620,150		$	1,637,109
Net book value of MSR asset to loans serviced for others	0.77		%	0.77		%

A summary of the changes in the LSR asset were as follows.

	Three Months Ended		Year Ended
(in thousands)	March 31, 2023		December 31, 2022
Loan servicing rights asset:
LSR asset at beginning of year	$	11,039	$	20,055
Amortization during the period	(552)		(9,016)
LSR asset at end of period	$	10,487	$	11,039
Agricultural loans serviced for others	$	528,891	$	538,392

Schedule of Estimated Future Amortization Expense for Amortizing Intangible Assets and the MSR Asset

The following table shows the estimated future amortization expense for amortizing intangible assets and the servicing assets. The projections are based on existing asset balances, the current interest rate environment and prepayment speeds as of March 31, 2023. The actual amortization expense the Company recognizes in any given period may be significantly different depending upon acquisition or sale activities, changes in interest rates, prepayment speeds, market conditions, regulatory requirements and events or circumstances that indicate the carrying amount of an asset may not be recoverable.

(in thousands)	Core deposit intangibles		Customer list intangibles		MSR asset		LSR asset
Year ending December 31,
2023 (remaining nine months)	$	5,555	$	356	$	1,672	$	1,656
2024	6,298		449		2,680		1,962
2025	5,161		449		1,942		1,717
2026	3,983		249		1,434		1,472
2027	3,218		166		1,434		1,227
2028	2,622		166		1,432		981
Thereafter	3,830		388		1,950		1,472
Total	$	30,667	$	2,223	$	12,544	$	10,487

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Short and Long-Term Borrowings (Tables)

3 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Schedule of Components of Long-term Borrowings

The components of long-term borrowings were as follows.

(in thousands)	March 31, 2023		December 31, 2022
FHLB advances	$	5,000	$	33,000
Junior subordinated debentures	39,928		39,720
Subordinated notes	152,520		152,622
Total long-term borrowings	$	197,448	$	225,342

Schedule of Junior Subordinated Debentures and Subordinated Notes

The following table shows the breakdown of junior subordinated debentures and subordinated notes.

		As of March 31, 2023								As of December 31, 2022
(in thousands)	Maturity Date	Interest  Rate		Par		Unamortized Premium /(Discount) / Debt Issue Costs (1)		Carrying Value		Interest  Rate		Carrying Value
Junior Subordinated Debentures:
Mid-Wisconsin Statutory Trust I (2)	12/15/2035	6.30	%	$	10,310	$	(2,527)	$	7,783	6.20	%	$	7,734
Baylake Capital Trust II (3)	9/30/2036	6.51	%	16,598		(3,115)		13,483		6.08	%	13,424
First Menasha Statutory Trust (4)	3/17/2034	7.70	%	5,155		(476)		4,679		7.53	%	4,668
County Bancorp Statutory Trust II (5)	9/15/2035	6.40	%	6,186		(870)		5,316		6.30	%	5,277
County Bancorp Statutory Trust III (6)	6/15/2036	6.56	%	6,186		(928)		5,258		6.46	%	5,219
Fox River Valley Capital Trust (7)	5/30/2033	6.40	%	3,610		(201)		3,409		6.40	%	3,398
Total				$	48,045	$	(8,117)	$	39,928			$	39,720
Subordinated Notes:
Subordinated Notes due 2031	7/15/2031	3.13	%	$	100,000	$	(681)	$	99,319	3.13	%	$	99,267
County Subordinated Notes due 2028	6/1/2028	5.88	%	30,000		49		30,049		5.88	%	30,119
County Subordinated Notes due 2030	6/30/2030	7.00	%	22,400		752		23,152		7.00	%	23,236
Total				$	152,400	$	120	$	152,520			$	152,622

(1) Represents the remaining unamortized premium or discount on debt issuances assumed in acquisitions, and represents the unamortized debt issue costs for the debt issued directly by Nicolet.

(2) The debentures, assumed in April 2013 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.43%, adjusted quarterly.

(3) The debentures, assumed in April 2016 as a result of an acquisition, have a floating rate of three-month LIBOR plus 1.35%, adjusted quarterly.

(4) The debentures, assumed in April 2017 as the result of an acquisition, have a floating rate of three-month LIBOR plus 2.79%, adjusted quarterly.

(5) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.53%, adjusted quarterly.

(6) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of three-month LIBOR plus 1.69%, adjusted quarterly.

(7) The debentures, assumed in December 2021 as the result of an acquisition, have a floating rate of 5-year swap rate plus 3.40%, which resets every five years.

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Commitment and Contingencies (Tables)

3 Months Ended

Mar. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of Summary of the Contract or Notional Amount of Exposure to Off-balance-sheet Risk

A summary of the contract or notional amount of the Company’s exposure to off-balance sheet risk was as follows.

(in thousands)	March 31, 2023		December 31, 2022
Commitments to extend credit	$	1,850,215	$	1,850,601
Financial standby letters of credit	23,246		26,530
Performance standby letters of credit	9,952		9,375

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents the balances of assets and liabilities measured at fair value on a recurring basis for the periods presented.

(in thousands)			Fair Value Measurements Using
Measured at Fair Value on a Recurring Basis:	Total		Level 1		Level 2		Level 3
March 31, 2023
U.S. Treasury securities	$	186,108	$	—	$	186,108	$	—
U.S. government agency securities	9,970		—		9,970		—
State, county and municipals	397,448		—		395,579		1,869
Mortgage-backed securities	311,621		—		310,638		983
Corporate debt securities	118,029		—		112,726		5,303
Securities AFS	$	1,023,176	$	—	$	1,015,021	$	8,155
Other investments (equity securities)	$	3,912	$	3,912	$	—	$	—
December 31, 2022
U.S. Treasury securities	$	183,830	$	—	$	183,830	$	—
U.S. government agency securities	2,100		—		2,100		—
State, county and municipals	398,188		—		396,315		1,873
Mortgage-backed securities	200,932		—		199,951		981
Corporate debt securities	132,568		—		127,269		5,299
Securities AFS	$	917,618	$	—	$	909,465	$	8,153
Other investments (equity securities)	$	4,376	$	4,376	$	—	$	—

Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis

The following table presents the changes in Level 3 securities AFS measured at fair value on a recurring basis.

	Three Months Ended		Year Ended
Level 3 Fair Value Measurements:	March 31, 2023		December 31, 2022
Balance at beginning of year	$	8,153	$	8,065
Acquired balance	—		750
Maturities / Paydowns	—		(451)
Unrealized gain / (loss)	2		(211)
Balance at end of period	$	8,155	$	8,153

Schedule of Assets Measured at Fair Value on a Nonrecurring Basis

The following table presents the Company’s assets measured at fair value on a nonrecurring basis, aggregated by level in the fair value hierarchy within which those measurements fall.

(in thousands)			Fair Value Measurements Using
Measured at Fair Value on a Nonrecurring Basis:	Total		Level 1		Level 2		Level 3
March 31, 2023
Collateral dependent loans	$	31,220	$	—	$	—	$	31,220
Other real estate owned (“OREO”)	1,975		—		—		1,975
MSR asset	12,544		—		—		12,544
December 31, 2022
Collateral dependent loans	$	30,951	$	—	$	—	$	30,951
OREO	1,975		—		—		1,975
MSR asset	12,580		—		—		12,580

Schedule of Estimated Fair Values of Financial Instruments

The carrying amounts and estimated fair values of the Company’s financial instruments are shown below.

March 31, 2023
(in thousands)	Carrying Amount		Estimated Fair Value		Level 1		Level 2		Level 3
Financial assets:
Cash and cash equivalents	$	114,180	$	114,180	$	114,180	$	—	$	—
Certificates of deposit in other banks	11,293		11,181		—		11,181		—
Securities AFS	1,023,176		1,023,176		—		1,015,021		8,155
Other investments, including equity securities	57,482		57,482		3,912		42,982		10,588
Loans held for sale	4,962		5,057		—		5,057		—
Loans, net	6,161,320		5,962,242		—		—		5,962,242
MSR asset	12,544		17,708		—		—		17,708
Accrued interest receivable	21,796		21,796		21,796		—		—
Financial liabilities:
Deposits	$	6,928,579	$	6,918,140	$	—	$	—	$	6,918,140
Short-term borrowings	50,000		50,000		—		50,000		—
Long-term borrowings	197,448		188,203		—		4,855		183,348
Accrued interest payable	4,219		4,219		4,219		—		—

December 31, 2022
(in thousands)	Carrying Amount		Estimated Fair Value		Level 1		Level 2		Level 3
Financial assets:
Cash and cash equivalents	$	154,723	$	154,723	$	154,723	$	—	$	—
Certificates of deposit in other banks	12,518		12,407		—		12,407		—
Securities AFS	917,618		917,618		—		909,465		8,153
Securities HTM	679,128		623,352		—		623,352		—
Other investments, including equity securities	65,286		65,286		4,376		52,093		8,817
Loans held for sale	1,482		1,529		—		1,529		—
Loans, net	6,118,670		5,863,570		—		—		5,863,570
MSR asset	12,580		17,215		—		—		17,215
Accrued interest receivable	21,275		21,275		21,275		—		—
Financial liabilities:
Deposits	$	7,178,921	$	7,172,779	$	—	$	—	$	7,172,779
Short-term borrowings	317,000		317,000		317,000		—		—
Long-term borrowings	225,342		220,513		—		33,001		187,512
Accrued interest payable	4,265		4,265		4,265		—		—

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Acquisition - Narrative (Details) - Charter Bankshares, Inc. $ / shares in Units, $ in Millions	Aug. 26, 2022 USD ($) $ / shares shares
Business Acquisition [Line Items]
Entity shares issued per acquiree share (in shares) | shares	15.458
Cash paid per acquiree share (in dollars per share) | $ / shares	$ 475
Number of common stock issued for consideration (in shares) | shares	1,262,360
Value of Nicolet common stock consideration	$ 98
Cash consideration paid	39
Purchase price	$ 137

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Acquisition - Summary of the Assets Acquired and Liabilities Assumed, Including Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands		3 Months Ended	7 Months Ended	12 Months Ended
	Aug. 26, 2022	Mar. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Purchase Price:
Preliminary goodwill		$ 0		$ 49,970
Charter Bankshares, Inc.
Assets Acquired:
Cash and cash equivalents	$ 10,000	10,000	$ 10,000
Investment securities	218,000	218,000	218,000
Loans	848,000	827,000	827,000
ACL-Loans	(9,000)	(2,000)	(2,000)
Premises and equipment	9,000	10,000	10,000
BOLI	29,000	29,000	29,000
Core deposit intangible	0	19,000	19,000
Other assets	5,000	10,000	10,000
Total assets	1,110,000	1,121,000	1,121,000
Liabilities Assumed:
Deposits	869,000	870,000	870,000
Borrowings	161,000	161,000	161,000
Other liabilities	3,000	3,000	3,000
Total liabilities	$ 1,033,000	1,034,000	1,034,000
Net assets acquired		$ 87,000	87,000
Assets Acquired:
Cash and cash equivalents			0
Investment securities			0
Loans			(21,000)
ACL-Loans			7,000
Premises and equipment			1,000
BOLI			0
Core deposit intangible			19,000
Other assets			5,000
Total assets			11,000
Liabilities Assumed:
Deposits			1,000
Borrowings			0
Other liabilities			0
Total liabilities			$ 1,000
Purchase Price:
Nicolet common stock issued (in shares)	1,262,360
Value of Nicolet common stock consideration	$ 98,000
Cash consideration paid	39,000
Total purchase price	137,000
Preliminary goodwill	$ 50,000

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Acquisition - Carrying Value of PCD Loans Acquired (Details) - Charter Bankshares, Inc. - USD ($) $ in Thousands	Mar. 31, 2023	Aug. 26, 2022
Business Acquisition [Line Items]
Allowance for credit losses on PCD loans at acquisition	$ 2,000	$ 9,000
Par value of PCD acquired loans at acquisition	$ 827,000	848,000
PCD loans aquired
Business Acquisition [Line Items]
Purchase price of PCD loans at acquisition		24,031
Allowance for credit losses on PCD loans at acquisition		1,709
Par value of PCD acquired loans at acquisition		$ 25,740

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Earnings per Common Share - Calculations for Basic and Diluted Earnings (Loss) per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income (loss)	$ (8,898)	$ 24,164
Weighted average common shares outstanding (in shares)	14,694,451	13,648,745
Effect of dilutive common stock awards (in shares)	0	566,000
Diluted weighted average common shares outstanding (in shares)	14,694,451	14,214,752
Basic earnings (loss) per common share (in dollars per share)	$ (0.61)	$ 1.77
Diluted earnings (loss) per common share (in dollars per share)	$ (0.61)	$ 1.70

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Earnings per Common Share - Narrative (Details) shares in Millions	3 Months Ended
	Mar. 31, 2022 shares
Earnings Per Share [Abstract]
Shares excluded from calculation of earnings per common share (in shares)	0.1

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Stock-Based Compensation - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares were available for grant (in shares)	0.7
Stock-based compensation expense	$ 1.4	$ 1.8
Unrecognized compensation cost	$ 17.2
Remaining vesting period over which cost expected to be recognized	3 years
Tax benefit for impact of share based compensation	$ 0.1	0.4
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 0.2	$ 3.0

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Stock-Based Compensation - Weighted Average Assumptions (Details) - Stock Incentive Plan - Stock Options	3 Months Ended
	Mar. 31, 2022 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Expected volatility	30.00%
Risk-free interest rate	1.77%
Expected average life (in years)	7 years
Weighted average per share fair value of options (in dollars per share)	$ 32.99

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Stock-Based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares
Weighted Average Exercise Price
Shares surrendered to satisfy exercise price and/or tax withholding requirements (in shares)	492
Stock Incentive Plan | Stock Options
Option Shares Outstanding
Beginning balance outstanding (in shares)	1,853,064
Granted (in shares)	0
Exercise of stock options (in shares)	(5,329)
Ending balance outstanding (in shares)	1,847,735
Exercisable (in shares)	1,278,592
Weighted Average Exercise Price
Beginning balance outstanding (in dollars per share) | $ / shares	$ 59.79
Granted (in dollars per share) | $ / shares	0
Exercise of stock options (in dollars per share) | $ / shares	34.82
Ending balance outstanding (in dollars per share) | $ / shares	59.86
Exercisable (in dollars per share) | $ / shares	$ 52.22
Weighted average remaining life outstanding (in years)	5 years 8 months 12 days
Weighted average remaining life exercisable (in years)	4 years 7 months 6 days
Aggregate intrinsic value outstanding | $	$ 16,359
Aggregate intrinsic value exercisable | $	$ 16,302

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Stock-Based Compensation - Restricted Stock Award Activity (Details) - Restricted Stock	3 Months Ended
	Mar. 31, 2023 $ / shares shares
Weighted Average Grant Date Fair Value
Beginning balance outstanding (in dollars per share) | $ / shares	$ 76.49
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	72.00
Ending balance outstanding (in dollars per share) | $ / shares	$ 76.52
Restricted Shares Outstanding
Beginning balance outstanding (in shares) | shares	73,490
Granted (in shares) | shares	0
Vested (in shares) | shares	(500)
Ending balance outstanding (in shares) | shares	72,990

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Securities and Other Investments - Amortized Costs and Fair Value of Securities AFS and HTM (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,106,829	$ 996,344
Gross Unrealized Gains	728	136
Gross Unrealized Losses	84,381	78,862
Estimated Fair Value	1,023,176	917,618
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	0	679,128
Gross Unrealized Gains		46
Gross Unrealized Losses		55,822
Estimated Fair Value		623,352
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	192,166	192,116
Gross Unrealized Gains	0	0
Gross Unrealized Losses	6,058	8,286
Estimated Fair Value	186,108	183,830
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		497,648
Gross Unrealized Gains		0
Gross Unrealized Losses		35,722
Estimated Fair Value		461,926
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,959	2,133
Gross Unrealized Gains	36	0
Gross Unrealized Losses	25	33
Estimated Fair Value	9,970	2,100
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		8,744
Gross Unrealized Gains		46
Gross Unrealized Losses		0
Estimated Fair Value		8,790
State, county and municipals
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	428,643	433,733
Gross Unrealized Gains	692	123
Gross Unrealized Losses	31,887	35,668
Estimated Fair Value	397,448	398,188
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		34,874
Gross Unrealized Gains		0
Gross Unrealized Losses		3,349
Estimated Fair Value		31,525
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	350,712	227,650
Gross Unrealized Gains	0	10
Gross Unrealized Losses	39,091	26,728
Estimated Fair Value	311,621	200,932
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		137,862
Gross Unrealized Gains		0
Gross Unrealized Losses		16,751
Estimated Fair Value		121,111
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	125,349	140,712
Gross Unrealized Gains	0	3
Gross Unrealized Losses	7,320	8,147
Estimated Fair Value	$ 118,029	$ 132,568

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Securities and Other Investments - Narrative (Details) - USD ($)		3 Months Ended
	Mar. 07, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Other comprehensive income (loss)		$ 3,597,000	$ 29,173,000
Investments securities pledged as collateral		414,000,000		$ 883,000,000
Accumulated other comprehensive loss		(61,067,000)		(57,470,000)
Accrued interest on investment securities		6,000,000		6,000,000
Provision for credit loss		2,300,000
Charge-off of credit loss		2,300,000
Allowance for credit losses on securities AFS		$ 0		0
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Allowance for credit losses on securities HTM				$ 0
U.S. Treasury securities
Schedule of Held-to-maturity Securities [Line Items]
Sale of held-to-maturity debt securities at par value	$ 500,000,000
Pre-tax loss	38,000,000
After-tax loss	28,000,000
Held to maturity securities book value	177,000,000
Carrying value	157,000,000
U.S. Treasury securities | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent
Schedule of Held-to-maturity Securities [Line Items]
Unrealized loss	20,000,000
Other comprehensive income (loss)	$ 15,000,000

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Securities and Other Investments - Realized Gains or Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Securities AFS:
Gross gains	$ 126	$ 20
Gross losses	(339)	(5)
Gains (losses) on sales of securities AFS, net	(213)	15
Proceeds from sales of securities AFS	22,565	3,400
Securities HTM:
Gross gains	0	0
Gross losses	(37,723)	0
Gains (losses) on sales of securities HTM, net	(37,723)	0
Proceeds from sales of securities HTM	$ 460,051	$ 0

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Securities and Other Investments - Gross Unrealized Losses and the Related Fair Value of Investment Securities (Details) $ in Thousands	Mar. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 187,169	$ 497,072
Less than 12 months, unrealized losses	6,595	35,593
12 months or more, fair value	754,036	378,520
12 months or more, unrealized losses	77,786	43,269
Total, fair value	941,205	875,592
Total, unrealized losses	$ 84,381	$ 78,862
Total, number of securities | security	1,165	1,296
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value		$ 85,699
Less than 12 months, unrealized losses		9,623
12 months or more, fair value		526,583
12 months or more, unrealized losses		46,199
Total, fair value		612,282
Total, unrealized losses		$ 55,822
Total, number of securities | security		170
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 456	$ 448
Less than 12 months, unrealized losses	8	14
12 months or more, fair value	185,640	183,382
12 months or more, unrealized losses	6,050	8,272
Total, fair value	186,096	183,830
Total, unrealized losses	$ 6,058	$ 8,286
Total, number of securities | security	9	9
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value		$ 0
Less than 12 months, unrealized losses		0
12 months or more, fair value		461,926
12 months or more, unrealized losses		35,722
Total, fair value		461,926
Total, unrealized losses		$ 35,722
Total, number of securities | security		6
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 2,718	$ 2,083
Less than 12 months, unrealized losses	20	32
12 months or more, fair value	107	17
12 months or more, unrealized losses	5	1
Total, fair value	2,825	2,100
Total, unrealized losses	$ 25	$ 33
Total, number of securities | security	9	9
State, county and municipals
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 79,617	$ 277,546
Less than 12 months, unrealized losses	1,826	18,041
12 months or more, fair value	247,397	86,569
12 months or more, unrealized losses	30,061	17,627
Total, fair value	327,014	364,115
Total, unrealized losses	$ 31,887	$ 35,668
Total, number of securities | security	608	812
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value		$ 17,591
Less than 12 months, unrealized losses		1,594
12 months or more, fair value		11,654
12 months or more, unrealized losses		1,755
Total, fair value		29,245
Total, unrealized losses		$ 3,349
Total, number of securities | security		58
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 35,724	$ 102,108
Less than 12 months, unrealized losses	2,158	11,320
12 months or more, fair value	275,897	95,614
12 months or more, unrealized losses	36,933	15,408
Total, fair value	311,621	197,722
Total, unrealized losses	$ 39,091	$ 26,728
Total, number of securities | security	464	376
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value		$ 68,108
Less than 12 months, unrealized losses		8,029
12 months or more, fair value		53,003
12 months or more, unrealized losses		8,722
Total, fair value		121,111
Total, unrealized losses		$ 16,751
Total, number of securities | security		106
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 68,654	$ 114,887
Less than 12 months, unrealized losses	2,583	6,186
12 months or more, fair value	44,995	12,938
12 months or more, unrealized losses	4,737	1,961
Total, fair value	113,649	127,825
Total, unrealized losses	$ 7,320	$ 8,147
Total, number of securities | security	75	90

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Securities and Other Investments - Amortized Cost and Fair Values of Investment Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Amortized Cost
Due in less than one year	$ 225,921
Due in one year through five years	173,794
Due after five years through ten years	223,776
Due after ten years	132,626
Allocated and single maturity date	756,117
Amortized Cost	1,106,829	$ 996,344
Fair Value
Due in less than one year	223,243
Due in one year through five years	163,788
Due after five years through ten years	201,296
Due after ten years	123,228
Allocated and single maturity date	711,555
Fair Value	1,023,176	917,618
Mortgage-backed securities
Amortized Cost
Mortgage-backed securities	350,712
Amortized Cost	350,712	227,650
Fair Value
Mortgage-backed securities	311,621
Fair Value	$ 311,621	$ 200,932

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Securities and Other Investments - Other Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Federal Reserve Bank stock	$ 32,708	$ 32,219
Federal Home Loan Bank (“FHLB”) stock	10,174	18,625
Equity securities with readily determinable fair values	3,912	4,376
Other investments	10,688	10,066
Total other investments	$ 57,482	$ 65,286

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Loans, Allowance for Credit Losses - Loans, and Credit Quality - Summary of Loan Composition (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 6,223,732	$ 6,180,499
Less allowance for credit losses - Loans (“ACL-Loans”)	62,412	61,829	$ 49,906	$ 49,672
Loans, net	$ 6,161,320	$ 6,118,670
Allowance for credit losses - Loans to loans (in percent)	1.00%	1.00%
% of Total	100.00%	100.00%
Retail & other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 52,975	$ 55,266
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 1,075	$ 1,029		932
% of Total	1.00%	1.00%
Commercial | Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,330,052	$ 1,304,819
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 16,699	$ 16,350		12,613
% of Total	21.00%	21.00%
Commercial | Owner-occupied commercial real estate (“CRE”)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 969,064	$ 954,599
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 9,310	$ 9,138		7,222
% of Total	16.00%	15.00%
Commercial | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,065,909	$ 1,088,607
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 9,436	$ 9,762		9,547
% of Total	17.00%	18.00%
Commercial real estate | CRE investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,146,388	$ 1,149,949
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 12,954	$ 12,744		8,462
% of Total	19.00%	19.00%
Commercial real estate | Construction & land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 333,370	$ 318,600
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 2,678	$ 2,572		1,812
% of Total	5.00%	5.00%
Residential | Residential first mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,014,166	$ 1,016,935
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 6,771	$ 6,976		6,844
% of Total	16.00%	16.00%
Residential | Residential junior mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 177,026	$ 177,332
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 1,815	$ 1,846		1,340
% of Total	3.00%	3.00%
Residential | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 134,782	$ 114,392
Less allowance for credit losses - Loans (“ACL-Loans”)	$ 1,674	$ 1,412		$ 900
% of Total	2.00%	2.00%

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Loans, Allowance for Credit Losses - Loans, and Credit Quality - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest on loans	$ 16,000,000	$ 15,000,000
Material loans criteria for ACL-Loans adequacy calculation	250,000
Reserve for unfunded commitments	$ 3,000,000	$ 3,000,000

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Loans, Allowance for Credit Losses - Loans, and Credit Quality - Roll Forward of Allowance for Credit Losses-Loans (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 61,829	$ 49,672	$ 49,672
ACL on PCD loans acquired	0	0	1,937
Provision for credit losses	750	300	10,950
Charge-offs	(184)	(100)	(1,033)
Recoveries	17	34	303
Net (charge-offs) recoveries	(167)	(66)	(730)
Ending balance	$ 62,412	$ 49,906	$ 61,829

XML

Loans, Allowance for Credit Losses - Loans, and Credit Quality - Activity in ACL-Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
ACL-Loans
Beginning balance	$ 61,829	$ 49,672	$ 49,672
ACL on PCD loans acquired	0	0	1,937
Provision for credit losses	750	300	10,950
Charge-offs	(184)	(100)	(1,033)
Recoveries	17	34	303
Net (charge-offs) recoveries	(167)	(66)	(730)
Ending balance	$ 62,412	49,906	$ 61,829
As % of ACL-Loans	100.00%		100.00%
Retail & other
ACL-Loans
Beginning balance	$ 1,029	932	$ 932
ACL on PCD loans acquired			0
Provision for credit losses	108		299
Charge-offs	(66)		(223)
Recoveries	4		21
Net (charge-offs) recoveries	(62)		(202)
Ending balance	$ 1,075		$ 1,029
As % of ACL-Loans	2.00%		2.00%
Commercial | Commercial & industrial
ACL-Loans
Beginning balance	$ 16,350	12,613	$ 12,613
ACL on PCD loans acquired			1,408
Provision for credit losses	457		2,415
Charge-offs	(118)		(190)
Recoveries	10		104
Net (charge-offs) recoveries	(108)		(86)
Ending balance	$ 16,699		$ 16,350
As % of ACL-Loans	27.00%		26.00%
Commercial | Owner-occupied CRE
ACL-Loans
Beginning balance	$ 9,138	7,222	$ 7,222
ACL on PCD loans acquired			384
Provision for credit losses	172		2,087
Charge-offs	0		(555)
Recoveries	0		0
Net (charge-offs) recoveries	0		(555)
Ending balance	$ 9,310		$ 9,138
As % of ACL-Loans	15.00%		15.00%
Commercial | Agricultural
ACL-Loans
Beginning balance	$ 9,762	9,547	$ 9,547
ACL on PCD loans acquired			0
Provision for credit losses	(328)		215
Charge-offs	0		0
Recoveries	2		0
Net (charge-offs) recoveries	2		0
Ending balance	$ 9,436		$ 9,762
As % of ACL-Loans	15.00%		16.00%
Commercial real estate | CRE investment
ACL-Loans
Beginning balance	$ 12,744	8,462	$ 8,462
ACL on PCD loans acquired			38
Provision for credit losses	210		4,075
Charge-offs	0		0
Recoveries	0		169
Net (charge-offs) recoveries	0		169
Ending balance	$ 12,954		$ 12,744
As % of ACL-Loans	21.00%		21.00%
Commercial real estate | Construction & land development
ACL-Loans
Beginning balance	$ 2,572	1,812	$ 1,812
ACL on PCD loans acquired			2
Provision for credit losses	106		758
Charge-offs	0		0
Recoveries	0		0
Net (charge-offs) recoveries	0		0
Ending balance	$ 2,678		$ 2,572
As % of ACL-Loans	4.00%		4.00%
Residential | Residential first mortgage
ACL-Loans
Beginning balance	$ 6,976	6,844	$ 6,844
ACL on PCD loans acquired			93
Provision for credit losses	(206)		96
Charge-offs	0		(65)
Recoveries	1		8
Net (charge-offs) recoveries	1		(57)
Ending balance	$ 6,771		$ 6,976
As % of ACL-Loans	11.00%		11.00%
Residential | Residential junior mortgage
ACL-Loans
Beginning balance	$ 1,846	1,340	$ 1,340
ACL on PCD loans acquired			12
Provision for credit losses	(31)		493
Charge-offs	0		0
Recoveries	0		1
Net (charge-offs) recoveries	0		1
Ending balance	$ 1,815		$ 1,846
As % of ACL-Loans	3.00%		3.00%
Residential | Residential construction
ACL-Loans
Beginning balance	$ 1,412	$ 900	$ 900
ACL on PCD loans acquired			0
Provision for credit losses	262		512
Charge-offs	0		0
Recoveries	0		0
Net (charge-offs) recoveries	0		0
Ending balance	$ 1,674		$ 1,412
As % of ACL-Loans	2.00%		2.00%

XML

Loans, Allowance for Credit Losses - Loans, and Credit Quality - Provision for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Receivables [Abstract]
Loans	$ 750	$ 300	$ 10,950
Unfunded commitments	0	0	550
Investment securities	2,340	0	0
Total	$ 3,090	$ 300	$ 11,500

XML

Loans, Allowance for Credit Losses - Loans, and Credit Quality - Collateral Dependent Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 31,953	$ 32,072
Without an Allowance	24,182	22,724
With an Allowance	7,771	9,348
Allowance Allocation	733	1,121
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	23,734	22,139
Other Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	8,219	9,933
Commercial | Commercial & industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	2,419	3,475
Without an Allowance	1,084	1,927
With an Allowance	1,335	1,548
Allowance Allocation	506	595
Commercial | Commercial & industrial | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	0
Commercial | Commercial & industrial | Other Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	2,419	3,475
Commercial | Owner-occupied CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	5,905	4,907
Without an Allowance	5,697	4,699
With an Allowance	208	208
Allowance Allocation	54	53
Commercial | Owner-occupied CRE | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	5,905	4,907
Commercial | Owner-occupied CRE | Other Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	0
Commercial | Agricultural
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	18,456	20,216
Without an Allowance	12,751	14,358
With an Allowance	5,705	5,858
Allowance Allocation	166	261
Commercial | Agricultural | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	12,656	13,758
Commercial | Agricultural | Other Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	5,800	6,458
Commercial real estate | CRE investment
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	3,158	2,713
Without an Allowance	2,635	979
With an Allowance	523	1,734
Allowance Allocation	7	212
Commercial real estate | CRE investment | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	3,158	2,713
Commercial real estate | CRE investment | Other Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	0
Commercial real estate | Construction & land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	650	670
Without an Allowance	650	670
With an Allowance	0	0
Allowance Allocation	0	0
Commercial real estate | Construction & land development | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	650	670
Commercial real estate | Construction & land development | Other Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	0
Residential | Residential first mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	1,357	91
Without an Allowance	1,357	91
With an Allowance	0	0
Allowance Allocation	0	0
Residential | Residential first mortgage | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	1,357	91
Residential | Residential first mortgage | Other Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	$ 0
Residential | Residential junior mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	8
Without an Allowance	8
With an Allowance	0
Allowance Allocation	0
Residential | Residential junior mortgage | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	8
Residential | Residential junior mortgage | Other Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 0

XML

Loans, Allowance for Credit Losses - Loans, and Credit Quality - Summary of Loans by Past Due Status (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans	$ 6,223,732	$ 6,180,499
Percent of total loans	100.00%	100.00%
30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	$ 6,259	$ 5,188
Percent past due	0.10%	0.10%
90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	$ 38,895	$ 38,080
Percent past due	0.60%	0.60%
Current
Financing Receivable, Past Due [Line Items]
Loans	$ 6,178,578	$ 6,137,231
Percent of current loans	99.30%	99.30%
Retail & other
Financing Receivable, Past Due [Line Items]
Loans	$ 52,975	$ 55,266
Retail & other | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	222	261
Retail & other | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	55	82
Retail & other | Current
Financing Receivable, Past Due [Line Items]
Loans	52,698	54,923
Commercial | Commercial & industrial
Financing Receivable, Past Due [Line Items]
Loans	1,330,052	1,304,819
Commercial | Commercial & industrial | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	256	210
Commercial | Commercial & industrial | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	2,874	3,328
Commercial | Commercial & industrial | Current
Financing Receivable, Past Due [Line Items]
Loans	1,326,922	1,301,281
Commercial | Owner-occupied CRE
Financing Receivable, Past Due [Line Items]
Loans	969,064	954,599
Commercial | Owner-occupied CRE | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	388	833
Commercial | Owner-occupied CRE | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	7,128	5,647
Commercial | Owner-occupied CRE | Current
Financing Receivable, Past Due [Line Items]
Loans	961,548	948,119
Commercial | Agricultural
Financing Receivable, Past Due [Line Items]
Loans	1,065,909	1,088,607
Commercial | Agricultural | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	178	20
Commercial | Agricultural | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	18,782	20,416
Commercial | Agricultural | Current
Financing Receivable, Past Due [Line Items]
Loans	1,046,949	1,068,171
Commercial real estate | CRE investment
Financing Receivable, Past Due [Line Items]
Loans	1,146,388	1,149,949
Commercial real estate | CRE investment | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | CRE investment | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	4,126	3,832
Commercial real estate | CRE investment | Current
Financing Receivable, Past Due [Line Items]
Loans	1,142,262	1,146,117
Commercial real estate | Construction & land development
Financing Receivable, Past Due [Line Items]
Loans	333,370	318,600
Commercial real estate | Construction & land development | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Construction & land development | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	748	771
Commercial real estate | Construction & land development | Current
Financing Receivable, Past Due [Line Items]
Loans	332,622	317,829
Residential | Residential first mortgage
Financing Receivable, Past Due [Line Items]
Loans	1,014,166	1,016,935
Residential | Residential first mortgage | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	3,852	3,628
Residential | Residential first mortgage | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	4,986	3,780
Residential | Residential first mortgage | Current
Financing Receivable, Past Due [Line Items]
Loans	1,005,328	1,009,527
Residential | Residential junior mortgage
Financing Receivable, Past Due [Line Items]
Loans	177,026	177,332
Residential | Residential junior mortgage | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	219	236
Residential | Residential junior mortgage | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	196	224
Residential | Residential junior mortgage | Current
Financing Receivable, Past Due [Line Items]
Loans	176,611	176,872
Residential | Residential construction
Financing Receivable, Past Due [Line Items]
Loans	134,782	114,392
Residential | Residential construction | 30-89 Days Past Due (accruing)
Financing Receivable, Past Due [Line Items]
Loans	1,144	0
Residential | Residential construction | 90 Days & Over or nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential | Residential construction | Current
Financing Receivable, Past Due [Line Items]
Loans	$ 133,638	$ 114,392

XML

Loans, Allowance for Credit Losses - Loans, and Credit Quality - Nonaccrual Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 38,895	$ 38,080
Percent of total loans	0.60%	0.60%
% of Total	100.00%	100.00%
Retail & other
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 55	$ 82
% of Total	0.00%	0.00%
Commercial | Commercial & industrial
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 2,874	$ 3,328
% of Total	7.00%	9.00%
Commercial | Owner-occupied CRE
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 7,128	$ 5,647
% of Total	18.00%	15.00%
Commercial | Agricultural
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 18,782	$ 20,416
% of Total	48.00%	53.00%
Commercial real estate | CRE investment
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 4,126	$ 3,832
% of Total	11.00%	10.00%
Commercial real estate | Construction & land development
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 748	$ 771
% of Total	2.00%	2.00%
Residential | Residential first mortgage
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 4,986	$ 3,780
% of Total	13.00%	10.00%
Residential | Residential junior mortgage
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 196	$ 224
% of Total	1.00%	1.00%
Residential | Residential construction
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 0	$ 0
% of Total	0.00%	0.00%

XML

Loans, Allowance for Credit Losses - Loans, and Credit Quality - Summary of Loans by Loan Risk Categories (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	$ 154,161	$ 1,528,490
2022/2021	1,554,581	1,271,582
2021/2020	1,257,240	689,302
2020/2019	666,231	437,225
2019/2018	420,956	322,275
Prior	1,292,008	1,061,537
Revolving	871,982	864,323
Revolving to Term	6,573	5,765
Total loans	6,223,732	6,180,499
Residential first mortgage
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	(65)
Revolving	0	0
Revolving to Term	0	0
Total loans	0	(65)
Residential junior mortgage
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
Retail & other
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022		0
2022/2021		(1)
2021/2020		(6)
2020/2019		(1)
2019/2018		0
Prior		0
Revolving		(215)
Revolving to Term		0
Total loans		(223)
Commercial & industrial
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0	(38)
2022/2021	(77)	(41)
2021/2020	(26)	(2)
2020/2019	0	0
2019/2018	0	(109)
Prior	0	0
Revolving	(15)	0
Revolving to Term	0	0
Total loans	(118)	(190)
Owner-occupied CRE
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	(555)
Revolving	0	0
Revolving to Term	0	0
Total loans	0	(555)
Agricultural
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
CRE investment
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
Construction & land development
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
Residential construction
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
Retail & other
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	1,646	12,318
2022/2021	10,603	9,003
2021/2020	8,077	4,243
2020/2019	3,661	3,190
2019/2018	2,623	1,065
Prior	4,480	24,955
Revolving	21,885	492
Revolving to Term	0	0
Total loans	52,975	55,266
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023/2022	0
2022/2021	0
2021/2020	0
2020/2019	0
2019/2018	0
Prior	0
Revolving	(66)
Revolving to Term	0
Total loans	(66)
Retail & other | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	1,646	12,318
2022/2021	10,603	8,957
2021/2020	8,010	4,221
2020/2019	3,659	3,188
2019/2018	2,622	1,035
Prior	4,451	24,950
Revolving	21,885	492
Revolving to Term	0	0
Total loans	52,876	55,161
Retail & other | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	23
2021/2020	21	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	21	23
Retail & other | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
Retail & other | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	23
2021/2020	46	22
2020/2019	2	2
2019/2018	1	30
Prior	29	5
Revolving	0	0
Revolving to Term	0	0
Total loans	78	82
Commercial | Commercial & industrial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	47,795	329,347
2022/2021	322,139	234,543
2021/2020	222,587	116,025
2020/2019	105,313	73,915
2019/2018	69,289	55,352
Prior	136,798	94,874
Revolving	426,131	400,763
Revolving to Term	0	0
Total loans	1,330,052	1,304,819
Commercial | Commercial & industrial | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	47,409	317,394
2022/2021	312,964	226,065
2021/2020	215,435	101,374
2020/2019	96,534	68,884
2019/2018	65,723	50,189
Prior	111,114	77,589
Revolving	376,926	360,978
Revolving to Term	0	0
Total loans	1,226,105	1,202,473
Commercial | Commercial & industrial | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	95	9,938
2022/2021	4,204	5,902
2021/2020	4,640	10,811
2020/2019	6,548	1,530
2019/2018	1,195	3,986
Prior	11,392	4,562
Revolving	27,894	20,617
Revolving to Term	0	0
Total loans	55,968	57,346
Commercial | Commercial & industrial | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	1,459
2022/2021	1,358	2,283
2021/2020	618	629
2020/2019	66	511
2019/2018	0	402
Prior	11,881	11,653
Revolving	6,543	14,047
Revolving to Term	0	0
Total loans	20,466	30,984
Commercial | Commercial & industrial | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	291	556
2022/2021	3,613	293
2021/2020	1,894	3,211
2020/2019	2,165	2,990
2019/2018	2,371	775
Prior	2,411	1,070
Revolving	14,768	5,121
Revolving to Term	0	0
Total loans	27,513	14,016
Commercial | Owner-occupied CRE
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	29,894	156,859
2022/2021	159,720	194,211
2021/2020	203,990	116,550
2020/2019	115,743	105,746
2019/2018	100,880	96,270
Prior	353,324	277,881
Revolving	5,513	7,082
Revolving to Term	0	0
Total loans	969,064	954,599
Commercial | Owner-occupied CRE | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	28,513	151,391
2022/2021	155,362	190,313
2021/2020	196,641	105,156
2020/2019	103,973	100,606
2019/2018	97,039	91,479
Prior	322,852	252,574
Revolving	4,773	6,734
Revolving to Term	0	0
Total loans	909,153	898,253
Commercial | Owner-occupied CRE | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	1,381	5,241
2022/2021	3,134	3,192
2021/2020	6,310	4,287
2020/2019	4,485	2,163
2019/2018	908	4,791
Prior	17,497	14,632
Revolving	490	348
Revolving to Term	0	0
Total loans	34,205	34,654
Commercial | Owner-occupied CRE | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	1,000	0
2021/2020	355	763
2020/2019	41	2,361
2019/2018	1,575	0
Prior	2,070	877
Revolving	250	0
Revolving to Term	0	0
Total loans	5,291	4,001
Commercial | Owner-occupied CRE | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	227
2022/2021	224	706
2021/2020	684	6,344
2020/2019	7,244	616
2019/2018	1,358	0
Prior	10,905	9,798
Revolving	0	0
Revolving to Term	0	0
Total loans	20,415	17,691
Commercial | Agricultural
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	13,914	295,783
2022/2021	301,203	167,539
2021/2020	158,626	88,855
2020/2019	86,281	29,465
2019/2018	27,962	24,815
Prior	218,581	199,982
Revolving	259,342	282,168
Revolving to Term	0	0
Total loans	1,065,909	1,088,607
Commercial | Agricultural | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	11,930	275,208
2022/2021	280,631	145,272
2021/2020	138,443	85,413
2020/2019	83,733	25,463
2019/2018	25,089	19,687
Prior	152,730	130,849
Revolving	227,727	249,033
Revolving to Term	0	0
Total loans	920,283	930,925
Commercial | Agricultural | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	1,239	13,295
2022/2021	13,311	18,178
2021/2020	11,668	2,694
2020/2019	1,762	1,992
2019/2018	879	517
Prior	39,707	43,927
Revolving	20,436	21,199
Revolving to Term	0	0
Total loans	89,002	101,802
Commercial | Agricultural | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	50	115
2022/2021	62	1,457
2021/2020	1,244	28
2020/2019	0	33
2019/2018	52	0
Prior	2,332	5,258
Revolving	195	429
Revolving to Term	0	0
Total loans	3,935	7,320
Commercial | Agricultural | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	695	7,165
2022/2021	7,199	2,632
2021/2020	7,271	720
2020/2019	786	1,977
2019/2018	1,942	4,611
Prior	23,812	19,948
Revolving	10,984	11,507
Revolving to Term	0	0
Total loans	52,689	48,560
Commercial real estate | CRE investment
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	10,836	206,497
2022/2021	206,361	230,901
2021/2020	229,714	196,226
2020/2019	193,247	140,036
2019/2018	138,869	85,376
Prior	355,273	279,115
Revolving	12,088	11,798
Revolving to Term	0	0
Total loans	1,146,388	1,149,949
Commercial real estate | CRE investment | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	8,011	205,930
2022/2021	205,798	229,252
2021/2020	228,060	192,527
2020/2019	189,172	134,301
2019/2018	132,082	79,649
Prior	326,737	248,595
Revolving	11,704	11,383
Revolving to Term	0	0
Total loans	1,101,564	1,101,637
Commercial real estate | CRE investment | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	2,825	567
2022/2021	563	1,649
2021/2020	1,633	3,578
2020/2019	3,552	4,266
2019/2018	3,312	3,086
Prior	21,095	24,897
Revolving	0	0
Revolving to Term	0	0
Total loans	32,980	38,043
Commercial real estate | CRE investment | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	1,170
2019/2018	1,159	2,396
Prior	3,778	2,483
Revolving	183	206
Revolving to Term	0	0
Total loans	5,120	6,255
Commercial real estate | CRE investment | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	21	121
2020/2019	523	299
2019/2018	2,316	245
Prior	3,663	3,140
Revolving	201	209
Revolving to Term	0	0
Total loans	6,724	4,014
Commercial real estate | Construction & land development
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	6,947	104,874
2022/2021	119,153	140,727
2021/2020	144,313	12,188
2020/2019	11,980	9,761
2019/2018	8,814	23,811
Prior	36,873	14,004
Revolving	5,290	13,235
Revolving to Term	0	0
Total loans	333,370	318,600
Commercial real estate | Construction & land development | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	6,947	104,804
2022/2021	119,087	140,727
2021/2020	144,313	12,188
2020/2019	11,980	9,747
2019/2018	8,802	23,811
Prior	36,033	13,138
Revolving	5,290	13,235
Revolving to Term	0	0
Total loans	332,452	317,650
Commercial real estate | Construction & land development | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	37
2022/2021	34	0
2021/2020	0	0
2020/2019	0	14
2019/2018	12	0
Prior	92	95
Revolving	0	0
Revolving to Term	0	0
Total loans	138	146
Commercial real estate | Construction & land development | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
Commercial real estate | Construction & land development | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	33
2022/2021	32	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	748	771
Revolving	0	0
Revolving to Term	0	0
Total loans	780	804
Residential | Residential first mortgage
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	35,309	320,276
2022/2021	310,950	273,098
2021/2020	271,918	149,042
2020/2019	143,906	71,838
2019/2018	69,327	33,677
Prior	181,327	166,921
Revolving	1,426	2,080
Revolving to Term	3	3
Total loans	1,014,166	1,016,935
Residential | Residential first mortgage | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	35,309	318,628
2022/2021	309,434	272,011
2021/2020	270,665	147,857
2020/2019	142,741	68,975
2019/2018	66,489	31,208
Prior	173,612	162,153
Revolving	1,426	2,080
Revolving to Term	3	3
Total loans	999,679	1,002,915
Residential | Residential first mortgage | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	1,494
2022/2021	1,364	758
2021/2020	776	997
2020/2019	987	1,803
2019/2018	1,776	2,272
Prior	2,759	465
Revolving	0	0
Revolving to Term	0	0
Total loans	7,662	7,789
Residential | Residential first mortgage | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	711
2019/2018	703	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	703	711
Residential | Residential first mortgage | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	154
2022/2021	152	329
2021/2020	477	188
2020/2019	178	349
2019/2018	359	197
Prior	4,956	4,303
Revolving	0	0
Revolving to Term	0	0
Total loans	6,122	5,520
Residential | Residential junior mortgage
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	2,784	10,119
2022/2021	9,940	4,786
2021/2020	4,496	5,207
2020/2019	5,055	3,151
2019/2018	3,071	1,573
Prior	4,803	3,576
Revolving	140,307	143,158
Revolving to Term	6,570	5,762
Total loans	177,026	177,332
Residential | Residential junior mortgage | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	2,784	10,119
2022/2021	9,905	4,580
2021/2020	4,291	5,207
2020/2019	5,055	3,151
2019/2018	3,071	1,573
Prior	4,780	3,409
Revolving	140,169	142,784
Revolving to Term	6,570	5,762
Total loans	176,625	176,585
Residential | Residential junior mortgage | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	143
Revolving	0	165
Revolving to Term	0	0
Total loans	0	308
Residential | Residential junior mortgage | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
Residential | Residential junior mortgage | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	35	206
2021/2020	205	0
2020/2019	0	0
2019/2018	0	0
Prior	23	24
Revolving	138	209
Revolving to Term	0	0
Total loans	401	439
Residential | Residential construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	5,036	92,417
2022/2021	114,512	16,774
2021/2020	13,519	966
2020/2019	1,045	123
2019/2018	121	336
Prior	549	229
Revolving	0	3,547
Revolving to Term	0	0
Total loans	134,782	114,392
Residential | Residential construction | Grades 1-4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	5,036	92,417
2022/2021	114,512	16,774
2021/2020	12,948	966
2020/2019	1,045	123
2019/2018	121	336
Prior	549	229
Revolving	0	3,547
Revolving to Term	0	0
Total loans	134,211	114,392
Residential | Residential construction | Grade 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	571	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	571	0
Residential | Residential construction | Grade 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	0	0
Residential | Residential construction | Grade 7
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
Prior	0	0
Revolving	0	0
Revolving to Term	0	0
Total loans	$ 0	$ 0

XML

Loans, Allowance for Credit Losses - Loans, and Credit Quality - Loan Modifications (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Financing Receivable, Impaired [Line Items]
Total	$ 110
% of Total Loans	0.00%
Payment Delay
Financing Receivable, Impaired [Line Items]
Total	$ 110
Term Extension
Financing Receivable, Impaired [Line Items]
Total	0
Interest Rate Reduction
Financing Receivable, Impaired [Line Items]
Total	0
Term Extension & Interest Rate Reduction
Financing Receivable, Impaired [Line Items]
Total	0
Commercial & industrial | Commercial
Financing Receivable, Impaired [Line Items]
Total	$ 0
% of Total Loans	0.00%
Commercial & industrial | Payment Delay | Commercial
Financing Receivable, Impaired [Line Items]
Total	$ 0
Commercial & industrial | Term Extension | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
Commercial & industrial | Interest Rate Reduction | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
Commercial & industrial | Term Extension & Interest Rate Reduction | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
Owner-occupied CRE | Commercial
Financing Receivable, Impaired [Line Items]
Total	$ 0
% of Total Loans	0.00%
Owner-occupied CRE | Payment Delay | Commercial
Financing Receivable, Impaired [Line Items]
Total	$ 0
Owner-occupied CRE | Term Extension | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
Owner-occupied CRE | Interest Rate Reduction | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
Owner-occupied CRE | Term Extension & Interest Rate Reduction | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
Agricultural | Commercial
Financing Receivable, Impaired [Line Items]
Total	$ 110
% of Total Loans	0.01%
Agricultural | Payment Delay | Commercial
Financing Receivable, Impaired [Line Items]
Total	$ 110
Agricultural | Term Extension | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
Agricultural | Interest Rate Reduction | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
Agricultural | Term Extension & Interest Rate Reduction | Commercial
Financing Receivable, Impaired [Line Items]
Total	0
CRE investment | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	$ 0
% of Total Loans	0.00%
CRE investment | Payment Delay | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	$ 0
CRE investment | Term Extension | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	0
CRE investment | Interest Rate Reduction | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	0
CRE investment | Term Extension & Interest Rate Reduction | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	0
Construction & land development | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	$ 0
% of Total Loans	0.00%
Construction & land development | Payment Delay | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	$ 0
Construction & land development | Term Extension | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	0
Construction & land development | Interest Rate Reduction | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	0
Construction & land development | Term Extension & Interest Rate Reduction | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total	0
Residential first mortgage | Residential first mortgage
Financing Receivable, Impaired [Line Items]
Total	$ 0
% of Total Loans	0.00%
Residential first mortgage | Payment Delay | Residential first mortgage
Financing Receivable, Impaired [Line Items]
Total	$ 0
Residential first mortgage | Term Extension | Residential first mortgage
Financing Receivable, Impaired [Line Items]
Total	0
Residential first mortgage | Interest Rate Reduction | Residential first mortgage
Financing Receivable, Impaired [Line Items]
Total	0
Residential first mortgage | Term Extension & Interest Rate Reduction | Residential first mortgage
Financing Receivable, Impaired [Line Items]
Total	$ 0

XML

Loans, Allowance for Credit Losses - Loans, and Credit Quality - Trouble Debt Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Receivables [Abstract]
Troubled debt restructurings	$ 18,000
Pre-modification balance	$ 24,000

XML

Goodwill and Other Intangibles and Servicing Rights - Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 367,387	$ 367,387	$ 317,189
Other intangibles	32,890	35,051
Goodwill and other intangibles, net	400,277	402,438
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Other intangibles	30,667	32,701
Customer list intangibles
Finite-Lived Intangible Assets [Line Items]
Other intangibles	$ 2,223	$ 2,350

XML

Goodwill and Other Intangibles and Servicing Rights - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Goodwill:
Goodwill at beginning of year	$ 367,387	$ 317,189
Acquisitions	0	49,970
Purchase accounting adjustment	0	228
Goodwill at end of period	$ 367,387	$ 367,387

XML

Goodwill and Other Intangibles and Servicing Rights - Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Net book value	$ 32,890		$ 35,051
Amortization during the period	2,161	$ 1,424
Core deposit intangibles:
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	60,724		60,724
Accumulated amortization	(30,057)		(28,023)
Net book value	30,667		32,701
Additions during the period	0		19,364
Amortization during the period	2,034		6,108
Customer list intangibles:
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	5,523		5,523
Accumulated amortization	(3,300)		(3,173)
Net book value	2,223		2,350
Amortization during the period	$ 127		$ 508

XML

Goodwill and Other Intangibles and Servicing Rights - Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Mortgage Servicing Rights
Mortgage servicing rights asset:
MSR asset at beginning of year	$ 13,080	$ 13,636
Capitalized MSR	204	2,327
Amortization during the period	(740)	(2,883)
MSR asset at end of period	12,544	13,080
Valuation Allowance:
Valuation allowance at beginning of year	(500)	(1,200)
Reversals	500	700
Valuation allowance at end of period	0	(500)
MSR asset, net	12,544	12,580
Fair value of MSR asset at end of period	17,708	17,215
Residential mortgage loans serviced for others	$ 1,620,150	$ 1,637,109
Net book value of MSR asset to loans serviced for others	0.77%	0.77%
LSR asset
Mortgage servicing rights asset:
MSR asset at beginning of year	$ 11,039	$ 20,055
Amortization during the period	(552)	(9,016)
MSR asset at end of period	10,487	11,039
Valuation Allowance:
Residential mortgage loans serviced for others	$ 528,891	$ 538,392

XML

Goodwill and Other Intangibles and Servicing Rights - Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Net book value	$ 32,890	$ 35,051
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
2023 (remaining nine months)	5,555
2024	6,298
2025	5,161
2026	3,983
2027	3,218
2028	2,622
Thereafter	3,830
Net book value	30,667	32,701
Customer list intangibles
Finite-Lived Intangible Assets [Line Items]
2023 (remaining nine months)	356
2024	449
2025	449
2026	249
2027	166
2028	166
Thereafter	388
Net book value	2,223	$ 2,350
MSR asset
Finite-Lived Intangible Assets [Line Items]
2023 (remaining nine months)	1,672
2024	2,680
2025	1,942
2026	1,434
2027	1,434
2028	1,432
Thereafter	1,950
Net book value	12,544
LSR asset
Finite-Lived Intangible Assets [Line Items]
2023 (remaining nine months)	1,656
2024	1,962
2025	1,717
2026	1,472
2027	1,227
2028	981
Thereafter	1,472
Net book value	$ 10,487

XML

Short and Long-Term Borrowings - Narrative (Details)	1 Months Ended	24 Months Ended	48 Months Ended	60 Months Ended
	Dec. 31, 2021 USD ($) note	Dec. 31, 2028	Dec. 31, 2030	Jul. 15, 2031	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jul. 31, 2021 USD ($)
Debt Instrument
Short-term borrowings					$ 50,000,000	$ 317,000,000
Trust preferred securities qualify as Tier 1 capital					$ 38,000,000	$ 38,000,000
FHLB advances
Debt Instrument
FHLB weighted average interest rate at period end					1.55%	1.09%
Subordinated notes
Debt Instrument
Face amount issued					$ 152,400,000
Number of notes assumed | note	2
Subordinated Notes due 2031 | Subordinated notes
Debt Instrument
Face amount issued					100,000,000		$ 100,000,000
Subordinated Notes due 2031 | Subordinated notes | Interest Rate For The Years One Through 5
Debt Instrument
Fixed interest rate							3.125%
Subordinated Notes due 2031 | Subordinated notes | SOFR | Forecast | Interest Rate After Year Five
Debt Instrument
Floating interest rate basis spread				2.375%
County Subordinated Notes due 2028 | Subordinated notes
Debt Instrument
Face amount issued	$ 30,000,000				30,000,000
County Subordinated Notes due 2028 | Subordinated notes | Interest Rate For The Years One Through 5
Debt Instrument
Fixed interest rate	5.875%
County Subordinated Notes due 2028 | Subordinated notes | LIBOR | Forecast | Interest Rate After Year Five
Debt Instrument
Floating interest rate basis spread		2.88%
County Subordinated Notes due 2030 | Subordinated notes
Debt Instrument
Face amount issued	$ 22,000,000				22,400,000
County Subordinated Notes due 2030 | Subordinated notes | Interest Rate For The Years One Through 5
Debt Instrument
Fixed interest rate	7.00%
County Subordinated Notes due 2030 | Subordinated notes | SOFR | Forecast | Interest Rate After Year Five
Debt Instrument
Floating interest rate basis spread			6.875%
FHLB advances
Debt Instrument
Short-term borrowings						$ 317,000,000
FHLB advances | Maturing September 2023
Debt Instrument
Short-term borrowings					$ 50,000,000	$ 200,000,000
Weighted average interest rate on short-term debt					4.26%	4.30%
FHLB advances | Maturing January 2023
Debt Instrument
Short-term borrowings						$ 117,000,000
Weighted average interest rate on short-term debt						4.29%

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Short and Long-Term Borrowings - Long-term Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument
Long-term borrowings	$ 197,448	$ 225,342
FHLB advances
Debt Instrument
Long-term borrowings	5,000	33,000
Junior subordinated debentures
Debt Instrument
Long-term borrowings	39,928	39,720
Subordinated notes
Debt Instrument
Long-term borrowings	$ 152,520	$ 152,622

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Short and Long-Term Borrowings - Junior Subordinated Debentures (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jul. 31, 2021
Debt Instrument [Line Items]
Carrying Value	$ 197,448,000	$ 225,342,000
Junior subordinated debentures
Debt Instrument [Line Items]
Par	48,045,000
Unamortized Premium /(Discount) / Debt Issue Costs	(8,117,000)
Carrying Value	$ 39,928,000	$ 39,720,000
Junior subordinated debentures | 2005 Mid-Wisconsin Financial Services, Inc.
Debt Instrument [Line Items]
Interest Rate	6.30%	6.20%
Par	$ 10,310,000
Unamortized Premium /(Discount) / Debt Issue Costs	(2,527,000)
Carrying Value	$ 7,783,000	$ 7,734,000
Junior subordinated debentures | 2006 Baylake Corp.
Debt Instrument [Line Items]
Interest Rate	6.51%	6.08%
Par	$ 16,598,000
Unamortized Premium /(Discount) / Debt Issue Costs	(3,115,000)
Carrying Value	$ 13,483,000	$ 13,424,000
Junior subordinated debentures | 2004 First Menasha Bancshares, Inc.
Debt Instrument [Line Items]
Interest Rate	7.70%	7.53%
Par	$ 5,155,000
Unamortized Premium /(Discount) / Debt Issue Costs	(476,000)
Carrying Value	$ 4,679,000	$ 4,668,000
Junior subordinated debentures | County Bancorp Statutory Trust II
Debt Instrument [Line Items]
Interest Rate	6.40%	6.30%
Par	$ 6,186,000
Unamortized Premium /(Discount) / Debt Issue Costs	(870,000)
Carrying Value	$ 5,316,000	$ 5,277,000
Junior subordinated debentures | County Bancorp Statutory Trust III
Debt Instrument [Line Items]
Interest Rate	6.56%	6.46%
Par	$ 6,186,000
Unamortized Premium /(Discount) / Debt Issue Costs	(928,000)
Carrying Value	$ 5,258,000	$ 5,219,000
Junior subordinated debentures | Fox River Valley Capital Trust
Debt Instrument [Line Items]
Interest Rate	6.40%	6.40%
Par	$ 3,610,000
Unamortized Premium /(Discount) / Debt Issue Costs	(201,000)
Carrying Value	$ 3,409,000	$ 3,398,000
Junior subordinated debentures | LIBOR | 2005 Mid-Wisconsin Financial Services, Inc.
Debt Instrument [Line Items]
Floating interest rate basis spread	1.43%
Junior subordinated debentures | LIBOR | 2006 Baylake Corp.
Debt Instrument [Line Items]
Floating interest rate basis spread	1.35%
Junior subordinated debentures | LIBOR | 2004 First Menasha Bancshares, Inc.
Debt Instrument [Line Items]
Floating interest rate basis spread	2.79%
Junior subordinated debentures | LIBOR | County Bancorp Statutory Trust II
Debt Instrument [Line Items]
Floating interest rate basis spread	1.53%
Junior subordinated debentures | LIBOR | County Bancorp Statutory Trust III
Debt Instrument [Line Items]
Floating interest rate basis spread	1.69%
Junior subordinated debentures | LIBOR | Fox River Valley Capital Trust
Debt Instrument [Line Items]
Floating interest rate basis spread	3.40%
Subordinated notes
Debt Instrument [Line Items]
Par	$ 152,400,000
Unamortized Premium /(Discount) / Debt Issue Costs	120,000
Carrying Value	$ 152,520,000	$ 152,622,000
Subordinated notes | Subordinated Notes due 2031
Debt Instrument [Line Items]
Interest Rate	3.13%	3.13%
Par	$ 100,000,000			$ 100,000,000
Unamortized Premium /(Discount) / Debt Issue Costs	(681,000)
Carrying Value	$ 99,319,000	$ 99,267,000
Subordinated notes | County Subordinated Notes due 2028
Debt Instrument [Line Items]
Interest Rate	5.88%	5.88%
Par	$ 30,000,000		$ 30,000,000
Unamortized Premium /(Discount) / Debt Issue Costs	49,000
Carrying Value	$ 30,049,000	$ 30,119,000
Subordinated notes | County Subordinated Notes due 2030
Debt Instrument [Line Items]
Interest Rate	7.00%	7.00%
Par	$ 22,400,000		$ 22,000,000
Unamortized Premium /(Discount) / Debt Issue Costs	752,000
Carrying Value	$ 23,152,000	$ 23,236,000

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Commitment and Contingencies - Contract or Notional Amount of Exposure to Off-balance-sheet Risk (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Commitments to extend credit
Other Commitments [Line Items]
Contract and notional amounts of commitments	$ 1,850,215	$ 1,850,601
Financial standby letters of credit
Other Commitments [Line Items]
Contract and notional amounts of commitments	23,246	26,530
Performance standby letters of credit
Other Commitments [Line Items]
Contract and notional amounts of commitments	$ 9,952	$ 9,375

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Commitment and Contingencies - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivative fair value, net	$ 0.1	$ 0.1
Interest Rate Lock Commitments
Derivative [Line Items]
Commitments to sell residential mortgage loans held for sale considered derivative instruments	18.0	9.0
Forward Contracts
Derivative [Line Items]
Commitments to sell residential mortgage loans held for sale considered derivative instruments	$ 17.0	$ 9.0

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Fair Value Measurements - Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	$ 1,023,176	$ 917,618
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	186,108	183,830
U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	9,970	2,100
State, county and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	397,448	398,188
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	311,621	200,932
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	118,029	132,568
Reccurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	1,023,176	917,618
Reccurring | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	186,108	183,830
Reccurring | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	9,970	2,100
Reccurring | State, county and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	397,448	398,188
Reccurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	311,621	200,932
Reccurring | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	118,029	132,568
Reccurring | Other investments (equity securities)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments (equity securities)	3,912	4,376
Reccurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	0	0
Reccurring | Level 1 | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	0	0
Reccurring | Level 1 | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	0	0
Reccurring | Level 1 | State, county and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	0	0
Reccurring | Level 1 | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	0	0
Reccurring | Level 1 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	0	0
Reccurring | Level 1 | Other investments (equity securities)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments (equity securities)	3,912	4,376
Reccurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	1,015,021	909,465
Reccurring | Level 2 | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	186,108	183,830
Reccurring | Level 2 | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	9,970	2,100
Reccurring | Level 2 | State, county and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	395,579	396,315
Reccurring | Level 2 | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	310,638	199,951
Reccurring | Level 2 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	112,726	127,269
Reccurring | Level 2 | Other investments (equity securities)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments (equity securities)	0	0
Reccurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	8,155	8,153
Reccurring | Level 3 | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	0	0
Reccurring | Level 3 | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	0	0
Reccurring | Level 3 | State, county and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	1,869	1,873
Reccurring | Level 3 | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	983	981
Reccurring | Level 3 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities AFS	5,303	5,299
Reccurring | Level 3 | Other investments (equity securities)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments (equity securities)	$ 0	$ 0

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Fair Value Measurements - Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Securities AFS - Recurring - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Level 3 Fair Value Measurements:
Balance at beginning of year	$ 8,153	$ 8,065
Acquired balance	0	750
Unrealized gain / (loss)	2	(211)
Balance at end of period	8,155	8,153
Level 3
Level 3 Fair Value Measurements:
Maturities / Paydowns	$ 0	$ (451)

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Fair Value Measurements - Measured at Fair Value on Nonrecurring Basis (Details) - Measured at Fair Value on a Nonrecurring Basis - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 31,220	$ 30,951
Other real estate owned (“OREO”)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	1,975	1,975
MSR asset
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	12,544	12,580
Level 1 | Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0	0
Level 1 | Other real estate owned (“OREO”)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0	0
Level 1 | MSR asset
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0	0
Level 2 | Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0	0
Level 2 | Other real estate owned (“OREO”)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0	0
Level 2 | MSR asset
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0	0
Level 3 | Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	31,220	30,951
Level 3 | Other real estate owned (“OREO”)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	1,975	1,975
Level 3 | MSR asset
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 12,544	$ 12,580

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Fair Value Measurements - Summary of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial assets:
Securities AFS	$ 1,023,176	$ 917,618
Securities HTM		623,352
Carrying Amount
Financial assets:
Cash and cash equivalents	114,180	154,723
Certificates of deposit in other banks	11,293	12,518
Securities AFS	1,023,176	917,618
Securities HTM		679,128
Other investments, including equity securities	57,482	65,286
Loans held for sale	4,962	1,482
Loans, net	6,161,320	6,118,670
Accrued interest receivable	21,796	21,275
Financial liabilities:
Deposits	6,928,579	7,178,921
Short-term borrowings	50,000	317,000
Long-term borrowings	197,448	225,342
Accrued interest payable	4,219	4,265
Carrying Amount | MSR asset
Financial assets:
MSR asset	12,544	12,580
Estimated Fair Value
Financial assets:
Cash and cash equivalents	114,180	154,723
Certificates of deposit in other banks	11,181	12,407
Securities AFS	1,023,176	917,618
Securities HTM		623,352
Other investments, including equity securities	57,482	65,286
Loans held for sale	5,057	1,529
Loans, net	5,962,242	5,863,570
Accrued interest receivable	21,796	21,275
Financial liabilities:
Deposits	6,918,140	7,172,779
Short-term borrowings	50,000	317,000
Long-term borrowings	188,203	220,513
Accrued interest payable	4,219	4,265
Estimated Fair Value | MSR asset
Financial assets:
MSR asset	17,708	17,215
Estimated Fair Value | Level 1
Financial assets:
Cash and cash equivalents	114,180	154,723
Certificates of deposit in other banks	0	0
Securities AFS	0	0
Securities HTM		0
Other investments, including equity securities	3,912	4,376
Loans held for sale	0	0
Loans, net	0	0
Accrued interest receivable	21,796	21,275
Financial liabilities:
Deposits	0	0
Short-term borrowings	0	317,000
Long-term borrowings	0	0
Accrued interest payable	4,219	4,265
Estimated Fair Value | Level 1 | MSR asset
Financial assets:
MSR asset	0	0
Estimated Fair Value | Level 2
Financial assets:
Cash and cash equivalents	0	0
Certificates of deposit in other banks	11,181	12,407
Securities AFS	1,015,021	909,465
Securities HTM		623,352
Other investments, including equity securities	42,982	52,093
Loans held for sale	5,057	1,529
Loans, net	0	0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Short-term borrowings	50,000	0
Long-term borrowings	4,855	33,001
Accrued interest payable	0	0
Estimated Fair Value | Level 2 | MSR asset
Financial assets:
MSR asset	0	0
Estimated Fair Value | Level 3
Financial assets:
Cash and cash equivalents	0	0
Certificates of deposit in other banks	0	0
Securities AFS	8,155	8,153
Securities HTM		0
Other investments, including equity securities	10,588	8,817
Loans held for sale	0	0
Loans, net	5,962,242	5,863,570
Accrued interest receivable	0	0
Financial liabilities:
Deposits	6,918,140	7,172,779
Short-term borrowings	0	0
Long-term borrowings	183,348	187,512
Accrued interest payable	0	0
Estimated Fair Value | Level 3 | MSR asset
Financial assets:
MSR asset	$ 17,708	$ 17,215