Note 6 - Goodwill and Intangibles - Core Deposit Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Balance at the beginning of period	$ 9,349	$ 11,381
Acquisition of GFED	63,541
Amortization expense	(2,854)	(2,032)	$ (2,149)
Balance at the end of the period	16,759	9,349	11,381
Net book value	16,759	9,349	11,381
Core Deposits [Member]
Balance at the beginning of period	9,349	11,381	13,466
Amortization expense	(2,854)	(2,032)	(2,085)
Balance at the end of the period	16,759	9,349	11,381
Gross carrying amount	29,519	19,255	19,255
Accumulated amortization	(12,760)	(9,906)	(7,874)
Net book value	16,759	$ 9,349	$ 11,381
Core Deposits [Member] | Guaranty Bank
Acquisition of GFED	$ 10,264