Note 6 - Securities - (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

	December 31, 2023
	(Dollars in thousands)
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury Securities	$	17,690	$	-	$	1,451	$	16,239
U.S. Government Agencies		10,258		-		848		9,410
Corporate Securities		49,609		-		5,770		43,839
Mortgage-Backed Securities		555,148		976		49,814		506,310
Municipal Securities		331,273		298		27,798		303,773
Total Securities Available for Sale	$	963,978	$	1,274	$	85,681	$	879,571

	December 31, 2022
	(Dollars in thousands)
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury Securities	$	32,783	$	-	$	2,668	$	30,115
U.S. Government Agencies		50,288		-		2,916		47,372
Corporate Securities		48,475		25		2,496		46,004
Mortgage-Backed Securities		506,671		267		55,213		451,725
Municipal Securities		347,382		11		31,858		315,535
Total Securities Available for Sale	$	985,599	$	303	$	95,151	$	890,751

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

	December 31, 2023
	Less Than 12 Months				12 Months or Greater				Total
	(Dollars in thousands)
			Gross				Gross				Gross
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
U.S. Treasury Securities	$	-	$	-	$	16,239	$	1,451	$	16,239	$	1,451
U.S. Government Agencies		-		-		9,410		848		9,410		848
Corporate Securities		7,529		362		36,106		5,408		43,635		5,770
Mortgage-Backed Securities		21,436		895		375,891		48,919		397,327		49,814
Municipal Securities		8,013		63		270,467		27,735		278,480		27,798
Total Securities Available for Sale	$	36,978	$	1,320	$	708,113	$	84,361	$	745,091	$	85,681

	December 31, 2022
	Less Than 12 Months				12 Months or Greater				Total
	(Dollars in thousands)
			Gross				Gross				Gross
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
U.S. Treasury Securities	$	9,702	$	374	$	20,413	$	2,294	$	30,115	$	2,668
U.S. Government Agencies		24,405		595		22,967		2,321		47,372		2,916
Corporate Securities		19,564		1,359		6,385		1,137		25,949		2,496
Mortgage-Backed Securities		115,692		7,473		324,043		47,740		439,735		55,213
Municipal Securities		143,035		10,206		131,944		21,652		274,979		31,858
Total Securities Available for Sale	$	312,398	$	20,007	$	505,752	$	75,144	$	818,150	$	95,151

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized		Fair
	Cost		Value
	(Dollars in thousands)
Less Than One Year	$	17,287	$	17,126
One to Five Years		181,791		171,117
Over Five to Ten Years		384,160		349,660
Over Ten Years		380,740		341,668
Total Securities Available for Sale	$	963,978	$	879,571

Equity Method Investments [Table Text Block]

	December 31,
	2023		2022
	(Dollars in thousands)
McLarty Capital Partners SBIC, L.P.	$	457	$	878
McLarty Capital Partners SBIC II, L.P.		2,520		2,437
Firmament Capital Partners SBIC III, L.P.		1,870		1,787
Firmament Capital Partners SBIC IV, L.P.		493		-
Bluehenge Capital Secured Debt SBIC, L.P.		3,220		3,934
Bluehenge Capital Secured Debt SBIC II, L.P.		1,146		296
New Louisiana Agnel Fund 2, LLC		49		49
Pharos Capital Partners IV-A, L.P.		457		356
Valesco Fund II, LP		1,227		1,147
Valesco Fund III, LP		37		-
GP Capital Partners, LP		624		277
BankTech Ventures, LP		284		77
Jam Fintop BankTech, LP		531		340
Ledyard Capital Managers, LLC		769		928
Mendon Ventures Banktech Fund I, LP		1,308		896
Castle Creek Launchpad Fund I, LP		607		211
Work America Capital Fund I, LP		425		629
	$	16,024	$	14,242