Note 3 - Loans - Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Gross loans	$ 961,561	$ 926,271
Less: Allowance for loan losses	(9,150)	(8,376)
Loans, net	952,411	917,895
Commercial Portfolio Segment [Member]
Gross loans	169,176	145,551
Less: Allowance for loan losses	(2,025)	(1,710)
Commercial Real Estate Portfolio Segment [Member]
Gross loans	413,653	399,488
Less: Allowance for loan losses	(4,212)	(4,080)
Commercial Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Gross loans	71,267	64,911
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loans [Member]
Gross loans	80,579	79,118
Commercial Real Estate Portfolio Segment [Member] \| Nonfarm Nonresidential [Member]
Gross loans	261,807	255,459
Residential Portfolio Segment [Member]
Gross loans	296,226	297,579
Less: Allowance for loan losses	(1,909)	(1,743)
Residential Portfolio Segment [Member] \| Multifamily Loans [Member]
Gross loans	75,525	70,950
Residential Portfolio Segment [Member] \| One- to Four-family Residential Properties [Member]
Gross loans	220,701	226,629
Consumer Portfolio Segment [Member]
Gross loans	44,814	47,790
Less: Allowance for loan losses	(593)	(485)
Agriculture Portfolio Segment [Member]
Gross loans	36,977	35,064
Less: Allowance for loan losses	(409)	(355)
Other Portfolio Segment [Member]
Gross loans	715	799
Less: Allowance for loan losses	$ (2)	$ (3)

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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