Note 2 - Investments, Available for Sale (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

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

	December 31, 2024
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair value
Student Loan Pools	$	39,670	$	117	$	(203	)	$	39,584
Small Business Administration (“SBA”) Bonds		66,491		337		(2,402	)		64,426
Tax Exempt Municipal Bonds		6,746		—		(688	)		6,058
Taxable Municipal Bonds		64,530		—		(11,970	)		52,560
Mortgage-Backed Securities ("MBS")		389,592		346		(26,943	)		362,995
Total AFS Securities	$	567,029	$	800	$	(42,206	)	$	525,623

	December 31, 2023
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair value
Student Loan Pools	$	51,022	$	72	$	(728	)	$	50,366
SBA Bonds		79,014		416		(2,677	)		76,753
Tax Exempt Municipal Bonds		21,501		643		(908	)		21,236
Taxable Municipal Bonds		64,669		—		(11,554	)		53,115
MBS		368,081		31		(31,942	)		336,170
Total AFS Securities	$	584,287	$	1,162	$	(47,809	)	$	537,640

Investments Classified by Contractual Maturity Date [Table Text Block]

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	113	$	112
Due after one year to five years		13,386		12,860
Due after five to ten years		55,904		50,348
Due after ten years or more		108,034		99,308
MBS		389,592		362,995
Total AFS Securities	$	567,029	$	525,623

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

	December 31, 2024
	Less than 12 Months						12 Months or More						Total
	Fair		Unrealized				Fair		Unrealized				Fair		Unrealized
(Dollars in thousands)	Value		Losses		#		Value		Losses		#		Value		Losses
Student Loan Pools	$	3,014	$	10		4	$	23,427	$	193		22	$	26,441	$	203
SBA Bonds		10,795		154		12		24,319		2,248		46		35,114		2,402
Tax Exempt Municipal Bonds		—		—		—		6,058		688		5		6,058		688
Taxable Municipal Bonds		—		—		—		52,560		11,970		59		52,560		11,970
MBS		16,510		152		26		270,559		26,791		195		287,069		26,943
	$	30,319	$	316		42	$	376,923	$	41,890		327	$	407,242	$	42,206

	December 31, 2023
	Less than 12 Months						12 Months or More						Total
	Fair		Unrealized				Fair		Unrealized				Fair		Unrealized
(Dollars in thousands)	Value		Losses		#		Value		Losses		#		Value		Losses
Student Loan Pools	$	377	$	1		1	$	43,872	$	727		34	$	44,249	$	728
SBA Bonds		2,200		5		4		39,151		2,672		63		41,351		2,677
Tax Exempt Municipal Bonds		—		—		—		12,965		908		12		12,965		908
Taxable Municipal Bonds		—		—		—		53,115		11,554		59		53,115		11,554
MBS		36,069		434		30		292,864		31,508		213		328,933		31,942
	$	38,646	$	440		35	$	441,967	$	47,369		381	$	480,613	$	47,809