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Disclosures about fair value of assets and liabilities (Tables)
12 Months Ended
Dec. 31, 2022
Text Block [Abstract]  
Fair Value Measurements of Assets and Liabilities Recognized on a Recurring Basis
The following table presents the fair value measurements of assets and liabilities recognized in the accompanying 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:
December 31, 2022
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$267,179 $— $267,179 $— 
State and municipal433,544 — 433,544 — 
Federal agency collateralized mortgage obligations31,215 — 31,215 — 
Federal agency mortgage–backed pools190,656 — 190,656 — 
Corporate notes74,964 — 74,964 — 
Total available for sale securities997,558 — 997,558 — 
Interest rate swap agreements asset44,595 — 44,595 — 
Commitments to originate mortgage loans284 — 284 — 
Interest rate swap agreements liability(42,619)— (42,619)— 
Mortgage loan contracts(50)— (50)— 
December 31, 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$116,979 $— $116,979 $— 
State and municipal639,746 — 519,282 120,464 
Federal agency collateralized mortgage obligations61,577 — 61,577 — 
Federal agency mortgage–backed pools257,691 — 257,691 — 
Corporate notes84,819 — 79,787 5,032 
Total available for sale securities1,160,812 — 1,035,316 125,496 
Interest rate swap agreements asset14,419 — 14,419 — 
Commitments to originate mortgage loans1,037 — 1,037 — 
Interest rate swap agreements liability(18,092)— (18,092)— 
Mortgage loan contracts(238)— (238)— 
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
The following is a reconciliation of the beginning and ending balances of recurring fair value measurements recognized in the accompanying balance sheets using significant unobservable Level 3 inputs for the year ended December 31, 2022.
Available for Sale Securities
Years Ended December 31
20222021
Beginning balance$125,496 $— 
Transfer to Level 2(125,496)— 
Included in other comprehensive income— (134)
Purchases, issuances and settlements— 125,630 
Principal payments— — 
Ending balance$— $125,496 
Other Assets Measured at Fair Value on Nonrecurring Basis
Certain other assets are measured at fair value on a nonrecurring 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
Value
Quoted Prices in
Active Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
December 31, 2022
Collateral dependent loans$8,091 $— $— $8,091 
December 31, 2021
Collateral dependent loans$15,176 $— $— $15,176 
Mortgage servicing rights15,186 — — 15,186 
Qualitative Information About Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements, Other than Goodwill
The following table presents qualitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements, other than goodwill, at December 31, 2022 and 2021.
December 31, 2022
Fair
Value
Valuation
Technique
Unobservable
Inputs
Range
(Weighted Average)
Collateral dependent loans$8,091 Collateral based measurementDiscount to reflect current market conditions and ultimate collectability
0.0%–100.0% (13.3%)
December 31, 2021
Fair
Value
Valuation
Technique
Unobservable
Inputs
Range
(Weighted Average)
State and municipal securities$120,464 Grid pricingMaturity date,
Weighted average coupon
1 month–16 years,
2.05%
Corporate securities5,032 Grid pricingMaturity date,
Weighted average coupon
9 years–17 years,
3.97%
Collateral dependent loans$15,176 Collateral based measurementDiscount to reflect current market conditions and ultimate collectability
0.0%–54.0% (4.8%)
Mortgage servicing rights15,186 Discounted cash flowsDiscount rate,
Constant prepayment rate, Probability of default
8.0%–8.0% (8.0%),
8.4%–14.6% (11.6%),
0.0%–2.0%(0.4%)