Note 7 - Loans and the Allowance for Loan Losses - Loans Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans	$ 3,189,608	$ 2,991,355
Allowance for loan losses	(29,112)	(22,024)	$ (12,124)
Net loans	3,160,496	2,969,331
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land [Member]
Loans	548,528	403,065
Allowance for loan losses	(4,498)	(3,584)	(1,868)
Commercial Real Estate Portfolio Segment [Member] \| Farmland [Member]
Loans	87,463	55,883
Allowance for loan losses	(721)	(600)	(229)
Commercial Real Estate Portfolio Segment [Member] \| Nonfarm Nonresidential [Member]
Loans	1,144,426	971,603
Allowance for loan losses	(9,794)	(7,369)	(3,882)
Residential Portfolio Segment [Member] \| Real Estate Residential One- to Four-Family [Member]
Loans	467,699	468,650
Allowance for loan losses	(3,791)	(3,453)	(1,888)
Residential Portfolio Segment [Member] \| Multi-family Residential [Member]
Loans	97,508	95,707
Allowance for loan losses	(774)	(818)	(226)
Commercial Portfolio Segment [Member]
Loans	721,385	886,325
Allowance for loan losses	(8,358)	(5,018)	(3,414)
Consumer Portfolio Segment [Member]
Loans	122,599	110,122
Allowance for loan losses	$ (1,176)	$ (1,182)	$ (617)

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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