Note 3 - Investments - Schedule of Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Available-for-Sale, Amortized Cost	$ 310,272	$ 328,695
Total securities available-for-sale, fair value	281,175	292,933
Total securities held-to-maturity, amortized cost	8,500	8,500
Total securities held-to-maturity, fair value	8,144	7,666
Total securities, amortized cost	318,772	337,195
Total securities, fair value	289,319	300,599
US Government Agencies Debt Securities [Member]
Due within one year, amortized cost	0	922
Due within one year, fair value	0	914
Due after one year through five years, amortized cost	4,962	3,947
Due after one year through five years, fair value	4,575	3,544
Due after five years through ten years, amortized cost	10,975	11,972
Due after five years through ten years, fair value	9,193	10,139
Due after ten years, amortized cost	4,310	4,310
Due after ten years, fair value	3,370	3,421
Subtotal, amortized cost	20,247	21,151
Subtotal, fair value	17,138	18,018
Available-for-Sale, Amortized Cost	20,247	21,151
Total securities available-for-sale, fair value	17,138	18,018
Corporate Debt Securities [Member]
Due within one year, amortized cost	0	1,000
Due within one year, fair value	0	1,004
Due after one year through five years, amortized cost	11,000	6,000
Due after one year through five years, fair value	10,766	6,609
Due after five years through ten years, amortized cost	3,000	4,000
Due after five years through ten years, fair value	2,918	3,839
Due after ten years, amortized cost	2,000	2,000
Due after ten years, fair value	1,442	1,420
Subtotal, amortized cost	16,000	13,000
Subtotal, fair value	15,126	12,872
Available-for-Sale, Amortized Cost	16,000	13,000
Total securities available-for-sale, fair value	15,126	12,872
Due after five years through ten years, amortized cost, held to maturity	8,500	8,500
Due after five years through ten years, fair value, held to maturity	8,144	7,666
Municipal Bonds [Member]
Due within one year, amortized cost	0	1,013
Due within one year, fair value	0	1,003
Due after one year through five years, amortized cost	2,186	757
Due after one year through five years, fair value	2,168	751
Due after five years through ten years, amortized cost	4,158	7,603
Due after five years through ten years, fair value	3,728	7,101
Due after ten years, amortized cost	76,430	129,430
Due after ten years, fair value	64,448	110,592
Subtotal, amortized cost	82,774	138,803
Subtotal, fair value	70,344	119,447
Available-for-Sale, Amortized Cost	82,774	138,803
Total securities available-for-sale, fair value	70,344	119,447
Collateralized Mortgage-Backed Securities [Member]
Without single maturity date, amortized cost	178,740	112,855
Without single maturity date, fair value	167,186	101,248
Available-for-Sale, Amortized Cost	178,740	112,855
Total securities available-for-sale, fair value	167,186	101,248
Collateralized Mortgage-Backed Securities [Member] \| Federal National Mortgage Association (FNMA) [Member]
Without single maturity date, amortized cost	90,771	76,369
Without single maturity date, fair value	80,677	66,275
Collateralized Mortgage-Backed Securities [Member] \| Federal Home Loan Mortgage Corporation (FHLMC) [Member]
Without single maturity date, amortized cost	48,765	32,311
Without single maturity date, fair value	47,773	31,376
Collateralized Mortgage-Backed Securities [Member] \| Government National Mortgage Association (GNMA) [Member]
Without single maturity date, amortized cost	39,204	4,175
Without single maturity date, fair value	38,736	3,597
Asset-Backed Securities [Member]
Due within one year, amortized cost	203	198
Due within one year, fair value	200	196
Due after one year through five years, amortized cost	1,073	1,860
Due after one year through five years, fair value	1,037	1,824
Due after five years through ten years, amortized cost	2,867	21,420
Due after five years through ten years, fair value	2,648	20,929
Due after ten years, amortized cost	8,368	19,408
Due after ten years, fair value	7,496	18,399
Subtotal, amortized cost	12,511	42,886
Subtotal, fair value	11,381	41,348
Available-for-Sale, Amortized Cost	12,511	42,886
Total securities available-for-sale, fair value	$ 11,381	$ 41,348

Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

No definition available.