Note 6 - Investments, Available for Sale ("AFS") (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

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

	March 31, 2024
Dollars in thousands		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Student Loan Pools	$	48,005	$	104	$	(406	)	$	47,703
Small Business Administration (“SBA”) Bonds		73,124		385		(2,709	)		70,800
Tax Exempt Municipal Bonds		20,519		509		(993	)		20,035
Taxable Municipal Bonds		64,649		—		(11,897	)		52,752
Mortgage-Backed Securities ("MBS")		371,494		123		(30,438	)		341,179
Total AFS Securities	$	577,791	$	1,121	$	(46,443	)	$	532,469

	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		March 31, 2024
AFS Securities:	Amortized Cost		Fair Value
One Year or Less	$	38	$	37
After One – Five Years		10,334		10,348
After Five – Ten Years		67,860		63,062
More Than Ten Years		128,065		117,843
MBS		371,494		341,179
Total AFS Securities	$	577,791	$	532,469

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

	March 31, 2024
	Less than 12 Months						12 Months or More						Total
Dollars in thousands		Fair Value		Unrealized Losses		#		Fair Value		Unrealized Losses		#		Fair Value		Unrealized Losses
Student Loan Pools	$	348	$	—		1	$	38,658	$	(406	)	32	$	39,006	$	(406	)
SBA Bonds		2,208		(6	)	5		36,193		(2,703	)	57		38,401		(2,709	)
Tax Exempt Municipal Bonds		549		(1	)	1		12,827		(992	)	12		13,376		(993	)
Taxable Municipal Bonds		—		—		—		52,752		(11,897	)	59		52,752		(11,897	)
MBS		30,103		(176	)	26		287,017		(30,262	)	215		317,120		(30,438	)
	$	33,208	$	(183	)	33	$	427,447	$	(46,260	)	375	$	460,655	$	(46,443	)

	December 31, 2023
	Less than 12 Months						12 Months or More						Total
Dollars in thousands		Fair Value		Unrealized Losses		#		Fair Value		Unrealized Losses		#		Fair Value		Unrealized 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	)