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Note 6 - Investments and Equity Securities - Gross Unrealized Losses and Fair Value (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Less than Twelve Months, Fair Value | $ 27,469 | $ 2,575
Less than Twelve Months, Gross Unrealized Losses | (664) | (17)
Twelve Months or Greater, Fair Value | 129,480 | 141,556
Twelve Months or Greater, Gross Unrealized Losses | (24,055) | (20,573)
Total, Fair Value | 156,949 | 144,131
Total, Gross Unrealized Losses | (24,719) | (20,590)
Less than Twelve Months, Fair Value | 27,469 | 2,575
Less than Twelve Months, Gross Unrealized Losses | (664) | (17)
Twelve Months or Greater, Fair Value | 129,480 | 141,556
Twelve Months or Greater, Gross Unrealized Losses | (24,055) | (20,573)
Total, Fair Value | 156,949 | 144,131
Total, Gross Unrealized Losses | (24,719) | (20,590)
Subordinated Debt Securities [Member] |  |
Less than Twelve Months, Fair Value | 10,376 | 994
Less than Twelve Months, Gross Unrealized Losses | (374) | (6)
Twelve Months or Greater, Fair Value | 20,496 | 29,356
Twelve Months or Greater, Gross Unrealized Losses | (2,053) | (2,445)
Total, Fair Value | 30,872 | 30,350
Total, Gross Unrealized Losses | (2,427) | (2,451)
Less than Twelve Months, Fair Value | 10,376 | 994
Less than Twelve Months, Gross Unrealized Losses | (374) | (6)
Twelve Months or Greater, Fair Value | 20,496 | 29,356
Twelve Months or Greater, Gross Unrealized Losses | (2,053) | (2,445)
Total, Fair Value | 30,872 | 30,350
Total, Gross Unrealized Losses | (2,427) | (2,451)
Nontaxable Municipal Bonds [Member] |  |
Less than Twelve Months, Fair Value | 17,093 | 1,386
Less than Twelve Months, Gross Unrealized Losses | (290) | (10)
Twelve Months or Greater, Fair Value | 103,085 | 106,078
Twelve Months or Greater, Gross Unrealized Losses | (21,283) | (17,482)
Total, Fair Value | 120,178 | 107,464
Total, Gross Unrealized Losses | (21,573) | (17,492)
Less than Twelve Months, Fair Value | 17,093 | 1,386
Less than Twelve Months, Gross Unrealized Losses | (290) | (10)
Twelve Months or Greater, Fair Value | 103,085 | 106,078
Twelve Months or Greater, Gross Unrealized Losses | (21,283) | (17,482)
Total, Fair Value | 120,178 | 107,464
Total, Gross Unrealized Losses | (21,573) | (17,492)
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |  |
Less than Twelve Months, Fair Value | 0 | 195
Less than Twelve Months, Gross Unrealized Losses | 0 | (1)
Twelve Months or Greater, Fair Value | 5,899 | 6,122
Twelve Months or Greater, Gross Unrealized Losses | (719) | (646)
Total, Fair Value | 5,899 | 6,317
Total, Gross Unrealized Losses | (719) | (647)
Less than Twelve Months, Fair Value | 0 | 195
Less than Twelve Months, Gross Unrealized Losses | 0 | (1)
Twelve Months or Greater, Fair Value | 5,899 | 6,122
Twelve Months or Greater, Gross Unrealized Losses | (719) | (646)
Total, Fair Value | 5,899 | 6,317
Total, Gross Unrealized Losses | $ (719) | $ (647)

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