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Note 2 - Securities - Fair Value of Securities Available for Sale and The Related Unrealized Gains and Losses Recognized in Accumulated Comprehensive Income (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt securities, amortized cost	$ 618,790	$ 1,102,146
Gross Unrealized Gains	0	11,534
Gross Unrealized Losses	(89,041)	(14,795)
Debt securities, fair value	529,749	1,098,885
US Treasury and Government [Member]
Debt securities, amortized cost	0	2,001
Gross Unrealized Gains	0	7
Gross Unrealized Losses	0	0
Debt securities, fair value	0	2,008
US Treasury Securities [Member]
Debt securities, amortized cost	90,810	93,267
Gross Unrealized Gains	0	23
Gross Unrealized Losses	(12,606)	(1,311)
Debt securities, fair value	78,204	91,979
US States and Political Subdivisions Debt Securities [Member]
Debt securities, amortized cost	277,489	528,252
Gross Unrealized Gains	0	10,704
Gross Unrealized Losses	(47,551)	(4,109)
Debt securities, fair value	229,938	534,847
Collateralized Mortgage-Backed Securities [Member]
Debt securities, amortized cost	236,703	441,383
Gross Unrealized Gains	0	781
Gross Unrealized Losses	(28,140)	(9,049)
Debt securities, fair value	208,563	433,115
Corporate Debt Securities [Member]
Debt securities, amortized cost	757	20,856
Gross Unrealized Gains	0	19
Gross Unrealized Losses	(46)	(233)
Debt securities, fair value	711	20,642
Asset-Backed Securities [Member]
Debt securities, amortized cost	13,031	16,387
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(698)	(93)
Debt securities, fair value	$ 12,333	$ 16,294

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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+ References

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-Publisher FASB
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-Name Accounting Standards Codification
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