Note 2 - Investments - Schedule of Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Available-for-Sale, Amortized Cost	$ 335,152	$ 310,272
Total securities available-for-sale, fair value	311,695	281,175
Total securities held-to-maturity, amortized cost	31,606	8,500
Total securities held-to-maturity, fair value	32,142	8,144
Total securities, amortized cost	366,758	318,772
Total securities, fair value	343,837	289,319
US Government Agencies Debt Securities [Member]
Due after one year through five years, amortized cost	4,972	4,962
Due after one year through five years, fair value	4,762	4,575
Due after five years through ten years, amortized cost	15,288	10,975
Due after five years through ten years, fair value	13,226	9,193
Due after ten years, amortized cost	0	4,310
Due after ten years, fair value	0	3,370
Subtotal, amortized cost	20,260	20,247
Subtotal, fair value	17,988	17,138
Available-for-Sale, Amortized Cost	20,260	20,247
Total securities available-for-sale, fair value	17,988	17,138
Corporate Debt Securities [Member]
Due after one year through five years, amortized cost	14,000	11,000
Due after one year through five years, fair value	13,934	10,766
Due after five years through ten years, amortized cost	2,000	3,000
Due after five years through ten years, fair value	1,517	2,918
Due after ten years, amortized cost	0	2,000
Due after ten years, fair value	0	1,442
Subtotal, amortized cost	16,000	16,000
Subtotal, fair value	15,451	15,126
Available-for-Sale, Amortized Cost	16,000	16,000
Total securities available-for-sale, fair value	15,451	15,126
Due after one year through five years, amortized cost, held to maturity	3,500	0
Due after one year through five years, fair value, held to maturity	3,488	0
Due after five years through ten years, amortized cost, held to maturity	25,836	8,500
Due after five years through ten years, fair value, held to maturity	26,170	8,144
Total securities held-to-maturity, amortized cost	29,336	8,500
Total securities held-to-maturity, fair value	29,658	8,144
Municipal Bonds [Member]
Due after one year through five years, amortized cost	2,147	2,186
Due after one year through five years, fair value	2,150	2,168
Due after five years through ten years, amortized cost	4,121	4,158
Due after five years through ten years, fair value	3,785	3,728
Due after ten years, amortized cost	75,657	76,430
Due after ten years, fair value	64,770	64,448
Subtotal, amortized cost	81,925	82,774
Subtotal, fair value	70,705	70,344
Available-for-Sale, Amortized Cost	81,925	82,774
Total securities available-for-sale, fair value	70,705	70,344
Due after five years through ten years, amortized cost, held to maturity	2,270	0
Due after five years through ten years, fair value, held to maturity	2,484	0
Total securities held-to-maturity, amortized cost	2,270	0
Total securities held-to-maturity, fair value	2,484	0
Collateralized Mortgage-Backed Securities [Member]
Without single maturity date, amortized cost	205,937	178,740
Without single maturity date, fair value	197,222	167,186
Available-for-Sale, Amortized Cost	205,937	178,740
Total securities available-for-sale, fair value	197,222	167,186
Collateralized Mortgage-Backed Securities [Member] \| Federal National Mortgage Association (FNMA) [Member]
Without single maturity date, amortized cost	86,824	90,771
Without single maturity date, fair value	79,479	80,677
Collateralized Mortgage-Backed Securities [Member] \| Federal Home Loan Mortgage Corporation (FHLMC) [Member]
Without single maturity date, amortized cost	46,537	48,765
Without single maturity date, fair value	45,823	47,773
Collateralized Mortgage-Backed Securities [Member] \| Government National Mortgage Association (GNMA) [Member]
Without single maturity date, amortized cost	72,576	39,204
Without single maturity date, fair value	71,920	38,736
Asset-Backed Securities [Member]
Due after one year through five years, amortized cost	744	1,073
Due after one year through five years, fair value	728	1,037
Due after five years through ten years, amortized cost	2,599	2,867
Due after five years through ten years, fair value	2,446	2,648
Due after ten years, amortized cost	7,557	8,368
Due after ten years, fair value	7,026	7,496
Subtotal, amortized cost	11,030	12,511
Subtotal, fair value	10,329	11,381
Due within one year, amortized cost	130	203
Due within one year, fair value	129	200
Available-for-Sale, Amortized Cost	11,030	12,511
Total securities available-for-sale, fair value	$ 10,329	$ 11,381

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.