Note 7 - Loans and the Allowance for Loan Losses - Allowance for Credit Losses and Recorded Investment in Loans Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Mar. 01, 2022
Beginning Balance	$ 29,112	$ 22,024
Charge-offs	(2,821)	(1,636)
Recoveries	1,001	677
Provision	10,886	8,047	$ 11,435
Ending Balance	38,178	29,112	22,024
Allowance for credit losses, individually evaluated for impairment	2,214	694
Allowance for credit losses, collectively evaluated for impairment	35,964	28,418
Purchased Credit Impaired	0	0		$ 26,803
Loans receivable	4,606,176	3,189,608
Loans receivable, individually evaluated for impairment	14,707	13,821
Loans receivable, collectively evaluated for impairment	4,541,682	3,124,567
Purchased Credit Impaired	49,787	51,220
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land [Member]
Beginning Balance	4,498	3,584
Charge-offs	(16)	(28)
Recoveries	25	1
Provision	1,261	941
Ending Balance	5,768	4,498	3,584
Allowance for credit losses, individually evaluated for impairment	21	26
Allowance for credit losses, collectively evaluated for impairment	5,747	4,472
Purchased Credit Impaired	0	0
Loans receivable	722,074	548,528
Loans receivable, individually evaluated for impairment	992	1,358
Loans receivable, collectively evaluated for impairment	720,129	546,164
Purchased Credit Impaired	953	1,006
Commercial Real Estate Portfolio Segment [Member] \| Farmland [Member]
Beginning Balance	721	600
Charge-offs	0	(1)
Recoveries	0	2
Provision	833	120
Ending Balance	1,554	721	600
Allowance for credit losses, individually evaluated for impairment	0	0
Allowance for credit losses, collectively evaluated for impairment	1,554	721
Purchased Credit Impaired	0	0
Loans receivable	193,587	87,463
Loans receivable, individually evaluated for impairment	16	74
Loans receivable, collectively evaluated for impairment	193,557	87,387
Purchased Credit Impaired	14	2
Commercial Real Estate Portfolio Segment [Member] \| Nonfarm Nonresidential [Member]
Beginning Balance	9,794	7,369
Charge-offs	(51)	(139)
Recoveries	50	99
Provision	3,355	2,465
Ending Balance	13,148	9,794	7,369
Allowance for credit losses, individually evaluated for impairment	59	83
Allowance for credit losses, collectively evaluated for impairment	13,089	9,711
Purchased Credit Impaired	0	0
Loans receivable	1,826,819	1,144,426
Loans receivable, individually evaluated for impairment	3,037	2,959
Loans receivable, collectively evaluated for impairment	1,796,274	1,118,836
Purchased Credit Impaired	27,508	22,631
Residential Portfolio Segment [Member] \| Real Estate Residential One- to Four-Family [Member]
Beginning Balance	3,791	3,453
Charge-offs	(191)	(169)
Recoveries	20	39
Provision	1,003	468
Ending Balance	4,623	3,791	3,453
Allowance for credit losses, individually evaluated for impairment	99	110
Allowance for credit losses, collectively evaluated for impairment	4,524	3,681
Purchased Credit Impaired	0	0
Loans receivable	557,741	467,699
Loans receivable, individually evaluated for impairment	4,028	3,627
Loans receivable, collectively evaluated for impairment	538,558	444,934
Purchased Credit Impaired	15,155	19,138
Residential Portfolio Segment [Member] \| Multi-family Residential [Member]
Beginning Balance	774	818
Charge-offs	0
Recoveries	0	0
Provision	(43)	(44)
Ending Balance	731	774	818
Allowance for credit losses, individually evaluated for impairment	0	0
Allowance for credit losses, collectively evaluated for impairment	731	774
Purchased Credit Impaired	0	0
Loans receivable	98,637	97,508
Loans receivable, individually evaluated for impairment	0	0
Loans receivable, collectively evaluated for impairment	98,637	97,508
Purchased Credit Impaired	0	0
Commercial Portfolio Segment [Member]
Beginning Balance	8,358	5,018
Charge-offs	(2,091)	(830)
Recoveries	697	417
Provision	4,233	3,753
Ending Balance	11,197	8,358	5,018
Allowance for credit losses, individually evaluated for impairment	2,002	438
Allowance for credit losses, collectively evaluated for impairment	9,195	7,920
Purchased Credit Impaired	0	0
Loans receivable	1,090,343	721,385
Loans receivable, individually evaluated for impairment	6,325	5,514
Loans receivable, collectively evaluated for impairment	1,078,544	708,346
Purchased Credit Impaired	5,474	7,525
Consumer Portfolio Segment [Member]
Beginning Balance	1,176	1,182
Charge-offs	(472)	(469)
Recoveries	209	119
Provision	244	344
Ending Balance	1,157	1,176	$ 1,182
Allowance for credit losses, individually evaluated for impairment	33	37
Allowance for credit losses, collectively evaluated for impairment	1,124	1,139
Purchased Credit Impaired	0	0
Loans receivable	116,975	122,599
Loans receivable, individually evaluated for impairment	309	289
Loans receivable, collectively evaluated for impairment	115,983	121,392
Purchased Credit Impaired	$ 683	$ 918

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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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 of expense related to estimated loss from loan and lease transactions.

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