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Note 2 - Investments - Schedule of Investments in Unrealized Loss Position (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Less than 12 months, fair value, available for sale securities | $ 20,666 | $ 58,754
Less than 12 months, unrealized loss, available for sale securities | (176) | (637)
12 months or longer, unrealized loss, fair value, available for sale securities | 163,147 | 209,362
12 months or longer, unrealized loss, available for sale securities | (29,633) | (36,064)
Available for sale securities, fair value, total | 183,813 | 268,116
Available for sale securities, unrealized losses total | (29,809) | (36,701)
Less than 12 months, fair value, held to maturity | 0 | 0
Less than 12 months, held to maturity securities | 0 | 0
12 months or longer, unrealized loss, fair value, held to maturity securities | 7,867 | 7,666
12 months or longer, unrealized loss, held to maturity securities | (633) | (834)
Held to maturity securities, fair value, total | 7,867 | 7,666
Held-to-maturity, total | (633) | (834)
Less than 12 months, fair value | 20,666 | 58,754
Less than 12 months, unrealized loss | (176) | (637)
12 months or longer, fair value | 171,014 | 217,028
12 months or longer, unrealized loss | (30,266) | (36,898)
Debt Securities, fair value, total | 191,680 | 275,782
Debt securities, unrealized loss, total | (30,442) | (37,535)
US Government Agencies Debt Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 0 | 0
Less than 12 months, unrealized loss, available for sale securities | 0 | 0
12 months or longer, unrealized loss, fair value, available for sale securities | 15,071 | 15,972
12 months or longer, unrealized loss, available for sale securities | (3,167) | (3,179)
Available for sale securities, fair value, total | 15,071 | 15,972
Available for sale securities, unrealized losses total | (3,167) | (3,179)
Corporate Debt Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 7,874 | 959
Less than 12 months, unrealized loss, available for sale securities | (126) | (41)
12 months or longer, unrealized loss, fair value, available for sale securities | 4,260 | 4,300
12 months or longer, unrealized loss, available for sale securities | (740) | (700)
Available for sale securities, fair value, total | 12,134 | 5,259
Available for sale securities, unrealized losses total | (866) | (741)
Less than 12 months, fair value, held to maturity | 0 | 0
Less than 12 months, held to maturity securities | 0 | 0
12 months or longer, unrealized loss, fair value, held to maturity securities | 7,867 | 7,666
12 months or longer, unrealized loss, held to maturity securities | (633) | (834)
Held to maturity securities, fair value, total | 7,867 | 7,666
Held-to-maturity, total | (633) | (834)
Municipal Bonds [Member] |  |
Less than 12 months, fair value, available for sale securities | 884 | 3,922
Less than 12 months, unrealized loss, available for sale securities | (9) | (23)
12 months or longer, unrealized loss, fair value, available for sale securities | 70,761 | 113,577
12 months or longer, unrealized loss, available for sale securities | (12,691) | (19,375)
Available for sale securities, fair value, total | 71,645 | 117,499
Available for sale securities, unrealized losses total | (12,700) | (19,398)
Collateralized Mortgage-Backed Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 11,908 | 20,662
Less than 12 months, unrealized loss, available for sale securities | (41) | (113)
12 months or longer, unrealized loss, fair value, available for sale securities | 65,462 | 67,376
12 months or longer, unrealized loss, available for sale securities | (11,868) | (11,732)
Available for sale securities, fair value, total | 77,370 | 88,038
Available for sale securities, unrealized losses total | (11,909) | (11,845)
U.S. Small Business Administration Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 0 | 33,211
Less than 12 months, unrealized loss, available for sale securities | 0 | (460)
12 months or longer, unrealized loss, fair value, available for sale securities | 7,593 | 8,137
12 months or longer, unrealized loss, available for sale securities | (1,167) | (1,078)
Available for sale securities, fair value, total | 7,593 | 41,348
Available for sale securities, unrealized losses total | $ (1,167) | $ (1,538)

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