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Note 2 - Securities - Schedule of Maturities of Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Less than 1 Year | $ 34,110 |
1 Year - 5 Years | 131,140 |
5 Years - 10 Years | 393,875 |
More than 10 Years | 90,205 |
Fair Value, available for sale | 641,048 | $ 1,098,885
Equity securities | 8,282 | 8,492
Total Available for Sale | 649,330 |
Investment securities held to maturity, amortized cost, 1 year or less | 6,266 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 51,259 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 272,319 |
Investment securities held to maturity, amortized cost, over 10 years | 100,074 |
Investment securities held to maturity, amortized cost, subtotal | 429,918 |
US Treasury and Government [Member] |  |
Less than 1 Year | 0 |
1 Year - 5 Years | 0 |
5 Years - 10 Years | 0 |
More than 10 Years | 0 |
Fair Value, available for sale | 0 | 2,008
Investment securities held to maturity, amortized cost, 1 year or less | 0 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 0 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 2,962 |
Investment securities held to maturity, amortized cost, over 10 years | 0 |
Investment securities held to maturity, amortized cost, subtotal | 2,962 |
US Treasury Securities [Member] |  |
Less than 1 Year | 2,007 |
1 Year - 5 Years | 0 |
5 Years - 10 Years | 84,484 |
More than 10 Years | 0 |
Fair Value, available for sale | 86,491 | 91,979
Investment securities held to maturity, amortized cost, 1 year or less | 0 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 0 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 0 |
Investment securities held to maturity, amortized cost, over 10 years | 0 |
Investment securities held to maturity, amortized cost, subtotal | 0 |
US States and Political Subdivisions Debt Securities [Member] |  |
Less than 1 Year | 17,913 |
1 Year - 5 Years | 34,667 |
5 Years - 10 Years | 185,902 |
More than 10 Years | 73,906 |
Fair Value, available for sale | 312,388 | 534,847
Investment securities held to maturity, amortized cost, 1 year or less | 2,755 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 4,608 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 97,764 |
Investment securities held to maturity, amortized cost, over 10 years | 99,074 |
Investment securities held to maturity, amortized cost, subtotal | 204,201 |
Corporate Debt Securities [Member] |  |
Less than 1 Year | 501 |
1 Year - 5 Years | 508 |
5 Years - 10 Years | 246 |
More than 10 Years | 0 |
Fair Value, available for sale | 1,255 | 20,642
Investment securities held to maturity, amortized cost, 1 year or less | 0 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 250 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 15,911 |
Investment securities held to maturity, amortized cost, over 10 years | 1,000 |
Investment securities held to maturity, amortized cost, subtotal | 17,161 |
Asset-Backed Securities [Member] |  |
Less than 1 Year | 0 |
1 Year - 5 Years | 10,305 |
5 Years - 10 Years | 3,940 |
More than 10 Years | 0 |
Fair Value, available for sale | 14,245 | 16,294
Investment securities held to maturity, amortized cost, 1 year or less | 0 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 1,429 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 0 |
Investment securities held to maturity, amortized cost, over 10 years | 0 |
Investment securities held to maturity, amortized cost, subtotal | 1,429 |
Debt Securities [Member] |  |
Less than 1 Year | 20,421 |
1 Year - 5 Years | 45,480 |
5 Years - 10 Years | 274,572 |
More than 10 Years | 73,906 |
Fair Value, available for sale | 414,379 |
Investment securities held to maturity, amortized cost, 1 year or less | 2,755 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 6,287 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 116,637 |
Investment securities held to maturity, amortized cost, over 10 years | 100,074 |
Investment securities held to maturity, amortized cost, subtotal | 225,753 |
Collateralized Mortgage-Backed Securities [Member] |  |
Less than 1 Year | 13,689 |
1 Year - 5 Years | 84,660 |
5 Years - 10 Years | 119,303 |
More than 10 Years | 9,017 |
Fair Value, available for sale | 226,669 | $ 433,115
Investment securities held to maturity, amortized cost, 1 year or less | 3,511 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 44,972 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 155,682 |
Investment securities held to maturity, amortized cost, over 10 years | 0 |
Investment securities held to maturity, amortized cost, subtotal | 204,165 |
Equity Securities [Member] |  |
Less than 1 Year | 0 |
1 Year - 5 Years | 1,000 |
5 Years - 10 Years | 0 |
More than 10 Years | 7,282 |
Investment securities held to maturity, amortized cost, 1 year or less | 0 |
Investment securities held to maturity, amortized cost, over 1 to 5 years | 0 |
Investment securities held to maturity, amortized cost, over 5 to 10 years | 0 |
Investment securities held to maturity, amortized cost, over 10 years | 0 |
Investment securities held to maturity, amortized cost, subtotal | $ 0 |

X
- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), and equity security measured at fair value with change in fair value recognized in net income (FV-NI), with single maturity date and allocated without single maturity date, maturing after rolling tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
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