Note 20 - Fair Value Measurements and Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

			December 31, 2023
			Fair Value Measurements at Reporting Date Using
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical		Observable		Unobservable
			Assets		Inputs		Inputs
	Total Fair Value		(Level 1)		(Level 2)		(Level 3)
(dollars in thousands)
Recurring fair value measurements:
Assets
Investment securities:
Available-for-sale:
Federal agency obligations	$	45,326	$	-	$	45,326	$	-
Residential mortgage pass-through securities		411,191		-		411,191		-
Commercial mortgage pass-through securities		21,564		-		21,564		-
Obligations of U.S. states and political subdivision		132,705		-		125,583		7,122
Corporate bonds and notes		4,973		-		4,973		-
Asset-backed securities		1,238		-		1,238		-
Certificates of deposit		-		-		-		-
Other securities		165		165		-		-
Total available-for-sale	$	617,162	$	165	$	609,875	$	7,122
Equity securities		18,564		9,867		8,697		-
Derivatives - interest rate contracts		43,805		-		43,805		-
Total assets	$	679,531	$	10,032	$	662,377	$	7,122

			December 31, 2022
			Fair Value Measurements at Reporting Date Using
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical		Observable		Unobservable
			Assets		Inputs		Inputs
	Total Fair Value		(Level 1)		(Level 2)		(Level 3)
(dollars in thousands)
Recurring fair value measurements:
Assets
Investment securities:
Available-for-sale:
Federal agency obligations	$	44,450	$	-	$	44,450	$	-
Residential mortgage pass-through securities		417,578		-		417,578		-
Commercial mortgage pass-through securities		21,104		-		21,104		-
Obligations of U.S. states and political subdivision		142,896		-		135,547		7,349
Corporate bonds and notes		6,974		-		6,974		-
Asset-backed securities		1,640		-		1,640		-
Certificates of deposit		-		-		-		-
Other securities		242		242		-		-
Total available-for-sale	$	634,884	$	242	$	627,293	$	7,349
Equity securities		15,811		9,733		6,078		-
Derivatives - interest rate contracts		56,797		-		56,797		-
Total assets	$	707,492	$	9,975	$	690,168	$	7,349

Fair Value Measurements, Nonrecurring [Table Text Block]

			Fair Value Measurements at Reporting Date Using
			Quoted
			Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical		Observable		Unobservable
	December 31,		Assets		Inputs		Inputs
	2023		(Level 1)		(Level 2)		(Level 3)
Assets measured at fair value on a nonrecurring basis:	(dollars in thousands)
Collateral dependent loans:
Commercial	$	657	$	-	$	-	$	657
Commercial real estate		7,005		-		-		7,005

			Fair Value Measurements at Reporting Date Using
			Quoted
			Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical		Observable		Unobservable
	December 31,		Assets		Inputs		Inputs
	2022		(Level 1)		(Level 2)		(Level 3)
Assets measured at fair value on a nonrecurring basis:	(dollars in thousands)
Collateral dependent loans:
Commercial	$	14,550	$	-	$	-	$	14,550
Commercial real estate		17,264		-		-		17,264
Residential real estate		1,392		-		-		1,392

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Municipal
	Securities
	(dollars in thousands)
Beginning balance, January 1, 2023	$	7,349
Principal paydowns		(272	)
Changes in unrealized gain (loss)		45
Ending balance, December 31, 2023	$	7,122

	Municipal
	Securities
	(dollars in thousands)
Beginning balance, January 1, 2022	$	8,565
Principal paydowns		(287	)
Changes in unrealized gain (loss)		(929	)
Ending balance, December 31, 2022	$	7,349

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

December 31, 2023			Valuation	Unobservable
	Fair Value		Techniques	Input	Range
Securities available-for-sale:			(dollars in thousands)
Municipal securities	$	7,122	Discounted cash flows	Discount rate	4.3	%

December 31, 2022			Valuation	Unobservable
	Fair Value		Techniques	Input	Range
Securities available-for-sale:			(dollars in thousands)
Municipal securities	$	7,349	Discounted cash flows	Discount rate		4.3	%

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

December 31, 2023
			Valuation	Unobservable
(dollars in thousands)	Fair Value		Techniques	Input	Range (weighed average)
Commercial loans	$	657	Appraisals of collateral	Adjustment for comparable sales	-7.5% to +25% (+.1%)
Commercial real estate loans		7,005	Appraisals of collateral	Adjustment for comparable sales	-15% to +0% (-10.3%)

December 31, 2022
			Valuation	Unobservable
(dollars in thousands)	Fair Value		Techniques	Input	Range (weighed average)
Commercial loans	$	14,028	Market approach (100%)	Average transfer price as a price to unpaid principal balance	65% to 96% (67%)
Commercial loans		522	Appraisals of collateral	Adjustment for comparable sales	-10% to +13% (+3%)
Commercial real estate loans		17,264	Appraisals of collateral	Adjustment for comparable sales	-20% to +0% (-15%)
Residential real estate loans		1,392	Appraisals of collateral	Adjustment for comparable sales	+21% to +39% (22%)

Fair Value, by Balance Sheet Grouping [Table Text Block]

					Fair Value Measurements
					Quoted
					Prices in
					Active		Significant
					Markets for		Other		Significant
					Identical		Observable		Unobservable
	Carrying		Fair		Assets		Inputs		Inputs
	Amount		Value		(Level 1)		(Level 2)		(Level 3)
	(dollars in thousands)
December 31, 2023
Financial assets:
Cash and due from banks	$	242,714	$	242,714	$	242,714	$	-	$	-
Investment securities available-for-sale		617,162		617,162		165		609,875		7,122
Restricted investment in bank stocks		51,457		n/a		n/a		n/a		n/a
Equity securities		18,564		18,564		9,867		8,697		-
Net loans		8,263,171		8,001,504		-		-		8,001,504
Derivatives - interest rate contracts		43,805		43,805		-		43,805		-
Accrued interest receivable		49,108		49,108		-		5,387		43,721
Financial liabilities:
Noninterest-bearing deposits		1,259,364		1,259,364		1,259,364		-		-
Interest-bearing deposits		6,276,838		6,256,444		3,745,467		2,510,977		-
Borrowings		933,579		932,081		-		932,081		-
Subordinated debentures		79,439		77,952		-		77,952		-
Accrued interest payable		10,152		10,152		-		10,152		-
December 31, 2022
Financial assets:
Cash and due from banks	$	268,315	$	268,315	$	268,315	$	-	$	-
Investment securities available-for-sale		634,884		634,884		242		627,293		7,349
Restricted investment in bank stocks		46,604		n/a		n/a		n/a		n/a
Equity securities		15,811		15,811		9,733		6,078		-
Net loans		8,009,176		7,723,378		-		-		7,723,378
Derivatives - interest rate contracts		56,797		56,797		-		56,797		-
Accrued interest receivable		46,062		46,062		-		4,685		41,377
Financial liabilities:
Noninterest-bearing deposits		1,501,614		1,501,614		1,501,614		-		-
Interest-bearing deposits		5,855,008		5,811,291		3,460,818		2,350,473		-
Borrowings		857,622		854,698		-		854,698		-
Subordinated debentures		153,255		153,581		-		153,581		-
Accrued interest payable		6,925		6,925		-		6,925		-