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Note 2 - Investments - Schedule of Investments in Unrealized Loss Position (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Less than 12 months, fair value, available for sale securities | $ 61,184 | $ 43,189
Less than 12 months, unrealized loss, available for sale securities | (529) | (511)
12 months or longer, unrealized loss, fair value, available for sale securities | 160,017 | 160,221
12 months or longer, unrealized loss, available for sale securities | (23,836) | (29,057)
Available for sale securities, fair value, total | 221,201 | 203,410
Available for sale securities, unrealized losses | (24,365) | (29,568)
Less than 12 months, fair value, held to maturity | 5,594 | 0
Less than 12 months, unrealized loss, held to maturity securities | (22) | 0
12 months or longer, unrealized loss, fair value, held to maturity securities | 940 | 8,144
12 months or longer, unrealized loss, held to maturity securities | (60) | (356)
Held to maturity securities, fair value | 6,534 | 8,144
Held-to-maturity, unrealized losses | (82) | (356)
Less than 12 months, fair value | 66,778 | 43,189
Less than 12 months, unrealized loss | (551) | (511)
12 months or longer, fair value | 160,957 | 168,365
12 months or longer, unrealized loss | (23,896) | (29,413)
Debt Securities, fair value, total | 227,735 | 211,554
Debt securities, unrealized loss | (24,447) | (29,924)
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 | 15,957 | 15,093
12 months or longer, unrealized loss, available for sale securities | (2,303) | (3,154)
Available for sale securities, fair value, total | 15,957 | 15,093
Available for sale securities, unrealized losses | (2,303) | (3,154)
Corporate Debt Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 5,997 | 6,781
Less than 12 months, unrealized loss, available for sale securities | (3) | (219)
12 months or longer, unrealized loss, fair value, available for sale securities | 5,447 | 5,337
12 months or longer, unrealized loss, available for sale securities | (553) | (663)
Available for sale securities, fair value, total | 11,444 | 12,118
Available for sale securities, unrealized losses | (556) | (882)
Less than 12 months, fair value, held to maturity | 5,594 | 0
Less than 12 months, unrealized loss, held to maturity securities | (22) | 0
12 months or longer, unrealized loss, fair value, held to maturity securities | 940 | 8,144
12 months or longer, unrealized loss, held to maturity securities | (60) | (356)
Held to maturity securities, fair value | 6,534 | 8,144
Held-to-maturity, unrealized losses | (82) | (356)
Municipal Bonds [Member] |  |
Less than 12 months, fair value, available for sale securities | 487 | 1,677
Less than 12 months, unrealized loss, available for sale securities | 0 | (10)
12 months or longer, unrealized loss, fair value, available for sale securities | 69,387 | 68,667
12 months or longer, unrealized loss, available for sale securities | (11,225) | (12,420)
Available for sale securities, fair value, total | 69,874 | 70,344
Available for sale securities, unrealized losses | (11,225) | (12,430)
Collateralized Mortgage-Backed Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 50,987 | 31,093
Less than 12 months, unrealized loss, available for sale securities | (508) | (241)
12 months or longer, unrealized loss, fair value, available for sale securities | 62,610 | 63,934
12 months or longer, unrealized loss, available for sale securities | (9,072) | (11,728)
Available for sale securities, fair value, total | 113,597 | 95,027
Available for sale securities, unrealized losses | (9,580) | (11,969)
Asset-Backed Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 3,713 | 3,638
Less than 12 months, unrealized loss, available for sale securities | (18) | (41)
12 months or longer, unrealized loss, fair value, available for sale securities | 6,616 | 7,190
12 months or longer, unrealized loss, available for sale securities | (683) | (1,092)
Available for sale securities, fair value, total | 10,329 | 10,828
Available for sale securities, unrealized losses | $ (701) | $ (1,133)

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