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Disclosures about Fair Value of Assets and Liabilities
 6 Months Ended
Jun. 30, 2021
Fair Value Disclosures [Abstract]  
Disclosures about Fair Value of Assets and Liabilities Disclosures about Fair Value of Assets and Liabilities
The Fair Value Measurements topic of the FASB ASC defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. There are three levels of inputs that may be used to measure fair value:
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
Following is a description of the valuation methodologies used for instruments measured at fair value on a recurring basis and recognized in the accompanying condensed consolidated financial statements, as well as the general classification of such instruments pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended June 30, 2021. For assets classified within Level 3 of the fair value hierarchy, the process used to develop the reported fair value is described below.
Available for sale securities
When quoted market prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. If quoted market prices are not available, then fair values are estimated by using pricing models, quoted prices of securities with similar characteristics or discounted cash flows. Level 2 securities include U.S. Treasury and federal agency securities, state and municipal securities, federal agency collateralized mortgage obligations and mortgage–backed pools and corporate notes. Level 2 securities are valued by a third party pricing service commonly used in the banking industry utilizing observable inputs. Observable inputs include dealer quotes, market spreads, cash flow analysis, the U.S. Treasury yield curve, trade execution data, market consensus prepayment spreads and available credit information and the bond’s terms and conditions. The pricing provider utilizes evaluated pricing models that vary based on asset class. These models incorporate available market information including quoted prices of securities with similar characteristics and, because many fixed–income securities do not trade on a daily basis, apply available information through processes such as benchmark
curves, benchmarking of like securities, sector grouping, and matrix pricing. In addition, model processes, such as an option adjusted spread model, is used to develop prepayment and interest rate scenarios for securities with prepayment features.
Hedged loans
Certain fixed rate loans have been converted to variable rate loans by entering into interest rate swap agreements. The fair value of those fixed rate loans is based on discounting the estimated cash flows using interest rates determined by the respective interest rate swap agreement. Loans are classified within Level 2 of the valuation hierarchy based on the unobservable inputs used.
Interest rate swap agreements
The fair value of the Company’s interest rate swap agreements is estimated by a third party using inputs that are primarily unobservable including a yield curve, adjusted for liquidity and credit risk, contracted terms and discounted cash flow analysis, and therefore, are classified within Level 2 of the valuation hierarchy.
The following table presents the fair value measurements of assets and liabilities recognized in the accompanying condensed consolidated financial statements measured at fair value on a recurring basis and the level within the FASB ASC fair value hierarchy in which the fair value measurements fall at the following:
June 30, 2021
Fair ValueQuoted Prices in Active Markets
for Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)
Available for sale securities
U.S. Treasury and federal agencies$191,101 $— $191,101 $— 
State and municipal1,113,493 — 1,113,493 — 
Federal agency collateralized mortgage obligations98,622 — 98,622 — 
Federal agency mortgage–backed pools167,510 — 167,510 — 
Private labeled mortgage–backed pools33,568 — 33,568 
Corporate notes86,892 — 86,892 — 
Total available for sale securities1,691,186 — 1,691,186 — 
Interest rate swap agreements asset22,693 — 22,693 — 
Forward sale commitments499 — 499 — 
Interest rate swap agreements liability(27,901)— (27,901)— 
December 31, 2020
Fair ValueQuoted Prices in Active Markets
for Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)
Available for sale securities
U.S. Treasury and federal agencies$19,715 $— $19,715 $— 
State and municipal837,843 — 837,843 — 
Federal agency collateralized mortgage obligations147,453 — 147,453 — 
Federal agency mortgage–backed pools118,799 — 118,799 — 
Corporate notes10,215 — 10,215 — 
Total available for sale securities1,134,025 — 1,134,025 — 
Interest rate swap agreements asset35,388 — 35,388 — 
Forward sale commitments1,045 — 1,045 — 
Interest rate swap agreements liability(43,631)— (43,631)— 
Realized gains and losses included in net income for the periods are reported in the condensed consolidated statements of income as follows:
Three Months EndedSix Months Ended
June 30, 2021June 30, 2020June 30, 2021June 30, 2020
Non-interest Income
Total gains and losses from:
Hedged loans$(4,830)$(3,162)$12,695 $(29,492)
Fair value interest rate swap agreements4,830 3,162 (12,695)29,492 
Derivative loan commitments696 (679)(545)364 
$696 $(679)$(545)$364 
Certain other assets are measured at fair value on a non-recurring basis in the ordinary course of business and are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment):
Fair ValueQuoted Prices in Active Markets
for Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)
June 30, 2021
Collateral dependent loans$8,918 $— $— $8,918 
Mortgage servicing rights14,462 — — 14,462 
December 31, 2020
Collateral dependent loans$13,123 $— $— $13,123 
Mortgage servicing rights12,472 — — 12,472 
Collateral Dependent Loans: For loans identified as collateral dependent, then the fair value method of measuring the amount of impairment is utilized. This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value.
Collateral dependent loans are classified within Level 3 of the fair value hierarchy when impairment is determined using the fair value method.
Mortgage Servicing Rights (MSRs): MSRs do not trade in an active market with readily observable prices. Accordingly, the fair value of these assets is classified as Level 3. The Company determines the fair value of MSRs using an income approach model based upon the Company’s month–end interest rate curve and prepayment assumptions. The model utilizes assumptions to estimate future net servicing income cash flows, including estimates of time decay, payoffs and changes in valuation inputs and assumptions. The Company reviews the valuation assumptions against this market data for reasonableness and adjusts the assumptions if deemed appropriate. The carrying amount of the MSRs’ fair value due to impairment increased by $1.8 million during the first six months of 2021 and decreased by $3.2 million during the first six months of 2020.

The following table presents qualitative information about unobservable inputs used in recurring and non–recurring Level 3 fair value measurements, other than goodwill.
June 30, 2021
Fair
Value		Valuation
Technique		Unobservable
Inputs		Range
(Weighted Average)
Collateral dependent loans$8,918 Collateral based measurementDiscount to reflect current market conditions and ultimate collectibility
0.0%-66.0% (13.8%)
Mortgage servicing rights14,462 Discounted cash flows
Discount rate,
Constant prepayment rate,
Probability of default
8.0%-8.0% (8.0%),
9.9%-28.5% (13.6%),
0.0%-4.5%(0.5%)

December 31, 2020
Fair
Value		Valuation
Technique		Unobservable
Inputs		Range
(Weighted Average)
Collateral dependent loans$13,123 Collateral based measurementDiscount to reflect current market conditions and ultimate collectibility
0.0%-72.0%(12.4%)
Mortgage servicing rights12,472 Discounted cash flowsDiscount rate,
Constant prepayment rate,
Probability of default
7.8%-7.8% (7.8%),
11.5%-20.9%(17.5%),
0.0%-1.0%(0.8%)