Note 13 - Fair Value - Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt securities available-for-sale, at fair value	$ 166,247	$ 280,961	[1]
Derivative assets	168	136
Interest receivable	10,719	10,881	[1]
Reported Value Measurement [Member]
Cash and cash equivalents	248,905	116,420
Debt securities available-for-sale, at fair value	166,247	280,961
Equity securities	55	55
Loans held for investment, net of allowance	2,484,372	2,536,109
Derivative assets	168	136
Interest receivable	10,719	10,881
Deferred compensation assets	7,464	6,729
Deposits fair value	247,512	253,373
Securities sold under agreements to repurchase	1,006	1,119
Interest payable	674	556
Deferred compensation liabilities	9,042	8,282
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	248,905	116,420
Debt securities available-for-sale, at fair value	166,247	280,961
Equity securities	55	55
Loans held for investment, net of allowance	2,247,195	2,350,071
Derivative assets	168	136
Interest receivable	10,719	10,881
Deferred compensation assets	7,464	6,729
Deposits fair value	243,842	247,141
Securities sold under agreements to repurchase	1,006	1,119
Interest payable	674	556
Deferred compensation liabilities	9,042	8,282
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	248,905	116,420
Debt securities available-for-sale, at fair value	0	0
Equity securities	0	0
Loans held for investment, net of allowance	0	0
Derivative assets	0	0
Interest receivable	0	0
Deferred compensation assets	7,464	6,729
Deposits fair value	0	0
Securities sold under agreements to repurchase	0	0
Interest payable	0	0
Deferred compensation liabilities	9,042	8,282
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents	0	0
Debt securities available-for-sale, at fair value	166,247	280,961
Equity securities	55	55
Loans held for investment, net of allowance	0	0
Derivative assets	168	136
Interest receivable	1,125	1,246
Deferred compensation assets	0	0
Deposits fair value	243,842	247,141
Securities sold under agreements to repurchase	1,006	1,119
Interest payable	674	556
Deferred compensation liabilities	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents	0	0
Debt securities available-for-sale, at fair value	0	0
Equity securities	0	0
Loans held for investment, net of allowance	2,247,195	2,350,071
Derivative assets	0	0
Interest receivable	9,594	9,635
Deferred compensation assets	0	0
Deposits fair value	0	0
Securities sold under agreements to repurchase	0	0
Interest payable	0	0
Deferred compensation liabilities	$ 0	$ 0

[1] Derived from audited financial statements