Note 7 - Loans and the Allowance for Loan Losses - Loans Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans	$ 4,606,176	$ 3,189,608
Allowance for loan losses	(38,178)	(29,112)	$ (22,024)
Net loans	4,567,998	3,160,496
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land [Member]
Loans	722,074	548,528
Allowance for loan losses	(5,768)	(4,498)	(3,584)
Commercial Real Estate Portfolio Segment [Member] \| Farmland [Member]
Loans	193,587	87,463
Allowance for loan losses	(1,554)	(721)	(600)
Commercial Real Estate Portfolio Segment [Member] \| Nonfarm Nonresidential [Member]
Loans	1,826,819	1,144,426
Allowance for loan losses	(13,148)	(9,794)	(7,369)
Residential Portfolio Segment [Member] \| Real Estate Residential One- to Four-Family [Member]
Loans	557,741	467,699
Allowance for loan losses	(4,623)	(3,791)	(3,453)
Residential Portfolio Segment [Member] \| Multi-family Residential [Member]
Loans	98,637	97,508
Allowance for loan losses	(731)	(774)	(818)
Commercial Portfolio Segment [Member]
Loans	1,090,343	721,385
Allowance for loan losses	(11,197)	(8,358)	(5,018)
Consumer Portfolio Segment [Member]
Loans	116,975	122,599
Allowance for loan losses	$ (1,157)	$ (1,176)	$ (1,182)

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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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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