Note 6 - Fair Value - Summary of Fair Value by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Reported Value Measurement [Member]
Investment securities HTM	$ 8,760	$ 8,777
Loans, net	2,008,375	2,000,578
Borrowings	153,403	143,403
Reported Value Measurement [Member] \| Time Deposits [Member]
Time deposits	623,844	661,833
Estimate of Fair Value Measurement [Member]
Investment securities HTM	7,362	7,487
Loans, net	2,020,336	2,020,810
Borrowings	152,276	145,748
Estimate of Fair Value Measurement [Member] \| Time Deposits [Member]
Time deposits	623,928	662,947
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities HTM	0	0
Loans, net	0	0
Borrowings	0	0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member] \| Time Deposits [Member]
Time deposits	0	0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities HTM	7,362	7,487
Loans, net	2,010,930	2,010,017
Borrowings	152,276	145,748
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member] \| Time Deposits [Member]
Time deposits	623,928	662,947
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities HTM	0	0
Loans, net	9,406	10,793
Borrowings	0	0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member] \| Time Deposits [Member]
Time deposits	$ 0	$ 0