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Note 11 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loan loss allowance	$ 52,484	$ 50,126
Accrual for bonuses	5,770	4,636
Non-accrual interest	3,642	2,164
Write-down on equity securities and venture capital investments	1,958	2,018
Depreciation and amortization	0	765
State tax	2,910	5,693
Unrealized loss on securities available-for-sale, net	32,333	31,728
Tax credits carried forward	29,307	9,136
Net operating loss carried forward	3,249	3,787
Other, net	6,176	7,632
Gross deferred tax assets	137,829	117,685
Deferred loan costs	(9,569)	(9,687)
Unrealized gain on interest rate swaps	(502)	(838)
Unrealized gain on equity securities	(2,460)	(4,863)
Dividends on Federal Home Loan Bank common stock	(976)	(977)
Other, net	(4,712)	(3,916)
Gross deferred tax liabilities	(18,219)	(20,281)
Net deferred tax assets	$ 119,610	$ 97,404

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