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Fair Value of Assets and Liabilities
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There is a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are as follows:
 
Level 1    Quoted prices in active markets for identical assets or liabilities
Level 2    Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities
Level 3    Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities

Transfers in and out of Level 1 (quoted prices in active markets), Level 2 (significant other observable inputs) and Level 3 (significant unobservable inputs) are recognized on the actual transfer date. There were no transfers between fair value hierarchy levels during the years ended December 31, 2021, 2020, and 2019.

Recurring Measurements
The following is a description of the inputs and valuation methodologies used for assets and liabilities measured at fair value on a recurring basis, as well as the general classification of such assets and liabilities pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended December 31, 2021.

Debt securities, available-for-sale. The fair value for available-for-sale debt securities is estimated by obtaining quoted market prices for identical assets, where available. If such prices are not available, fair value is based on independent asset pricing services and models, the inputs of which are market-based or independently sourced market parameters, including but not limited to, yield curves, interest rates, volatilities, market spreads, prepayments, defaults, recoveries, cumulative loss projections, and cash flows. Such securities are classified in Level 2 of the valuation hierarchy. Where Level 1 or Level 2 inputs are not available, such securities are classified as Level 3 within the hierarchy.

Fair value determinations of available-for-sale debt securities are the responsibility of the Company’s corporate accounting and treasury departments. The Company obtains fair value estimates from independent third party vendors on a monthly basis. The vendors’ pricing system methodologies, procedures and system controls are reviewed to ensure they are appropriately designed and operating effectively. The Company reviews the vendors’ inputs for fair value estimates and the recommended assignments of levels within the fair value hierarchy. The review includes the extent to which markets for debt securities are determined to have limited or no activity, or are judged to be active markets. The Company reviews the extent to which observable and unobservable inputs are used as well as the appropriateness of the underlying assumptions about risk that a market participant would use in active markets, with adjustments for limited or inactive markets. In considering the inputs to the fair value estimates, the Company places less reliance on quotes that are judged to not reflect orderly transactions, or are non-binding indications. In assessing credit risk, the Company reviews payment performance, collateral adequacy, third party research and analyses, credit rating histories and issuers’ financial statements. For those markets determined to be inactive or limited, the valuation techniques used are models for which management has verified that discount rates are appropriately adjusted to reflect illiquidity and credit risk.

Loans held for sale, at fair value. Loans held for sale measured at fair value, for which an active secondary market and readily available market prices exist, are initially valued at the transaction price and are subsequently valued by using quoted prices for similar assets, adjusted for specific attributes of that loan or other observable market data, such as outstanding commitments from third party investors. Loans held for sale measured at fair value are classified within Level 2. Included in gain on sale of loans were net gains of $5,496,000, net losses of $5,368,000 and net gains of $661,000 for the years ended December 31, 2021, 2020 and 2019, respectively, from the changes in fair value of loans held for sale measured at fair value. Electing to measure loans held for sale at fair value reduces certain timing differences and better matches changes in fair value of these assets with changes in the value of the derivative instruments used to economically hedge them without the burden of complying with the requirements for hedge accounting.

Loan interest rate lock commitments. Fair value estimates for loan interest rate lock commitments were based upon the estimated sales price, origination fees, direct costs, interest rate changes, etc. and were obtained from an independent third party. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy.
Forward commitments to sell TBA securities. Forward commitments to sell TBA securities are used to economically hedge the interest rate risk associated with certain loan commitments. The fair value estimates for the TBA commitments were based upon the estimated sale of the TBA hedge obtained from an independent third party. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy.

Interest rate cap derivative financial instruments. Fair value estimates for interest rate cap derivative financial instruments were based upon the discounted cash flows of known payments plus the option value of each caplet which incorporates market rate forecasts and implied market volatilities. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. The Company also obtained and compared the reasonableness of the pricing from independent third party valuations.

The following tables disclose the fair value measurement of assets and liabilities measured at fair value on a recurring basis:
  
  Fair Value Measurements
At the End of the Reporting Period Using
(Dollars in thousands)Fair Value
December 31,
2021
Quoted Prices
in Active  Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Debt securities, available-for-sale
U.S. government and federal agency$1,346,749 — 1,346,749 — 
U.S. government sponsored enterprises240,693 — 240,693 — 
State and local governments488,858 — 488,858 — 
Corporate bonds180,752 — 180,752 — 
Residential mortgage-backed securities5,699,659 — 5,699,659 — 
Commercial mortgage-backed securities1,214,138 — 1,214,138 — 
Loans held for sale, at fair value60,797 — 60,797 — 
Interest rate caps934 — 934 — 
Interest rate locks3,008 — 3,008 — 
Total assets measured at fair value
  on a recurring basis
$9,235,588 — 9,235,588 — 
TBA hedge$80 — 80 — 
Total liabilities measured at fair value on a recurring basis
$80 — 80 — 
 
  Fair Value Measurements
At the End of the Reporting Period Using
(Dollars in thousands)Fair Value December 31, 2020Quoted Prices
in Active
Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Debt securities, available-for-sale
U.S. government and federal agency$38,588 — 38,588 — 
U.S. government sponsored enterprises9,781 — 9,781 — 
State and local governments1,416,683 — 1,416,683 — 
Corporate bonds349,098 — 349,098 — 
Residential mortgage-backed securities2,289,090 — 2,289,090 — 
Commercial mortgage-backed securities1,234,574 — 1,234,574 — 
Loans held for sale, at fair value166,572 — 166,572 — 
Interest rate caps201 — 201 — 
Interest rate locks8,605 — 8,605 — 
Total assets measured at fair value on a recurring basis
$5,513,192 — 5,513,192 — 
TBA hedge$2,056 — 2,056 — 
Total liabilities measured at fair value on a recurring basis
$2,056 — 2,056 — 
Non-recurring Measurements
The following is a description of the inputs and valuation methodologies used for assets recorded at fair value on a non-recurring basis, as well as the general classification of such assets pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended December 31, 2021.

Other real estate owned. OREO is initially recorded at fair value less estimated cost to sell, establishing a new cost basis. OREO is subsequently accounted for at lower of cost or fair value less estimated cost to sell. Estimated fair value of OREO is based on appraisals or evaluations (new or updated). OREO is classified within Level 3 of the fair value hierarchy.

Collateral-dependent loans, net of ACL. Fair value estimates of collateral-dependent loans that are individually reviewed are based on the fair value of the collateral, less estimated cost to sell. Collateral-dependent individually reviewed loans are classified within Level 3 of the fair value hierarchy.

The Company’s credit department reviews appraisals for OREO and collateral-dependent loans, giving consideration to the highest and best use of the collateral. The appraisal or evaluation (new or updated) is considered the starting point for determining fair value. The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The key inputs used to determine the fair value of the collateral-dependent loans and OREO include selling costs, discounted cash flow rate or capitalization rate, and adjustment to comparables. Valuations and significant inputs obtained by independent sources are reviewed by the Company for accuracy and reasonableness. The Company also considers other factors and events in the environment that may affect the fair value. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. After review and acceptance of the collateral appraisal or evaluation (new or updated), adjustments to the impaired loan or OREO may occur. The Company generally obtains appraisals or evaluations (new or updated) annually.

The following tables disclose the fair value measurement of assets with a recorded change during the period resulting from re-measuring the assets at fair value on a non-recurring basis:
  Fair Value Measurements
At the End of the Reporting Period Using
(Dollars in thousands)Fair Value December 31, 2021Quoted Prices
in Active
Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Collateral-dependent impaired loans, net of ACL22,036 — — 22,036 
Total assets measured at fair value on a non-recurring basis
$22,036 — — 22,036 
  Fair Value Measurements
At the End of the Reporting Period Using
(Dollars in thousands)Fair Value December 31, 2020Quoted Prices
in Active
Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Other real estate owned$564 — — 564 
Collateral-dependent impaired loans, net of ACL26,749 — — 26,749 
Total assets measured at fair value on a non-recurring basis
$27,313 — — 27,313 

Non-recurring Measurements Using Significant Unobservable Inputs (Level 3)
The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company has utilized Level 3 inputs to determine fair value:
 Fair ValueQuantitative Information about Level 3 Fair Value Measurements
(Dollars in thousands)December 31,
2021
Valuation TechniqueUnobservable Input
Range (Weighted- Average) 1
Collateral-dependent
impaired loans, net of ACL
$20,934 Cost approachSelling costs
10.0% - 10.0% (10.0%)
1,102 Sales comparison approachSelling costs
5.0% - 10.0% (6.7%)
Adjustment to comparables
0.0% - 10.0% (6.0%)
$22,036 
 Fair ValueQuantitative Information about Level 3 Fair Value Measurements
(Dollars in thousands)December 31,
2020
Valuation TechniqueUnobservable Input
Range (Weighted- Average) 1
Other real estate owned$564 Sales comparison approachSelling costs
8.0% - 10.0% (9.0%)
Collateral-dependent impaired loans, net of ACL$144 Cost approachSelling costs
10.0% - 10.0% (10.0%)
25,309 Sales comparison approachSelling Costs
10.0% - 10.0% (0.1%)
Adjustment to comparables
0.0% - 100.0% (11.1%)
1,296 Combined approachSelling costs
10.0% - 10.0% (10.0%)
Discount rate
8.0% - 8.0% (8.0%)
$26,749 
______________________________
1 The range for selling cost inputs represents reductions to the fair value of the assets.

Fair Value of Financial Instruments
The following tables present the carrying amounts, estimated fair values and the level within the fair value hierarchy of the Company’s financial instruments not carried at fair value. Receivables and payables due in one year or less, equity securities without readily determinable fair values and deposits with no defined or contractual maturities are excluded. There have been no significant changes in the valuation techniques during the period ended December 31, 2021.

Cash and cash equivalents: fair value is estimated at book value.

Debt securities, held-to-maturity: fair value for held-to-maturity debt securities is estimated in the same manner as available-for sale debt securities, which is described above.

Loans receivable, net of ACL: The loans were fair valued on an individual basis, with consideration given to the loans' underlying characteristics, including account types, remaining terms and balance, interest rates, past delinquencies, current market rates, etc. The model utilizes a discounted cash flow approach to estimate the fair value of the loans using various assumptions such as prepayment speeds, projected default probabilities, losses given defaults, etc. The discounted cash flow approach models the credit losses directly in the projected cash flows. The model applies various assumptions regarding credit, interest, and prepayment risks for the loans based on loan types, payment types and fixed or variable classifications.

Term Deposits: fair value of term deposits is estimated by discounting the future cash flows using rates of similar deposits with similar maturities. The market rates used were obtained from an independent third party based on current rates offered by the Company’s regional competitors.

Repurchase agreements and other borrowed funds: fair value of term repurchase agreements and other term borrowings is estimated based on current repurchase rates and borrowing rates currently available to the Company for repurchases and borrowings with similar terms and maturities. The estimated fair value for overnight repurchase agreements and other borrowings is book value.
Subordinated debentures: fair value of the subordinated debt is estimated by discounting the estimated future cash flows using current estimated market rates obtained from an independent third party.

Off-balance sheet financial instruments: unused lines of credit and letters of credit represent the principal categories of off-balance sheet financial instruments. The fair value of commitments is based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of unused lines of credit and letters of credit is not material; therefore, such commitments are not included in the following tables.
  Fair Value Measurements
At the End of the Reporting Period Using
(Dollars in thousands)Carrying Amount December 31, 2021Quoted Prices
in Active Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Financial assets
Cash and cash equivalents$437,686 437,686 — — 
Debt securities, held-to-maturity1,199,164 — 1,220,883 — 
Loans receivable, net of ACL13,259,366 — — 13,422,898 
Total financial assets$14,896,216 437,686 1,220,883 13,422,898 
Financial liabilities
Term deposits$1,036,077 — 1,040,100 — 
Repurchase agreements and other borrowed funds
1,064,888 — 1,064,888 — 
Subordinated debentures132,620 — 131,513 — 
Total financial liabilities$2,233,585 — 2,236,501 — 
  Fair Value Measurements
At the End of the Reporting Period Using
(Dollars in thousands)Carrying Amount December 31, 2020Quoted Prices
in Active  Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Financial assets
Cash and cash equivalents$633,142 633,142 — — 
Debt securities, held-to-maturity189,836 — 203,216 — 
Loans receivable, net of ACL10,964,453 — — 11,233,002 
Total financial assets$11,787,431 633,142 203,216 11,233,002 
Financial liabilities
Term deposits$978,779 — 983,491 — 
Repurchase agreements and other borrowed funds
1,037,651 — 1,037,651 — 
Subordinated debentures139,959 — 123,944 — 
Total financial liabilities$2,156,389 — 2,145,086 —