Note 3 - Loans Receivable - Loans Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans receivable, gross	$ 1,357,161	$ 1,154,033
Net deferred loan fees	4,772	4,346
Premium on purchased loans, net	(12,995)	(6,129)
Allowance for loan losses	15,124	13,847	$ 9,628
Total loans receivable, net	1,350,260	1,141,969
Real Estate Portfolio Segment [Member]
Loans receivable, gross	1,055,382	892,496
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member]
Loans receivable, gross	294,965	309,828
Allowance for loan losses	3,184	3,469	3,024
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member]
Loans receivable, gross	172,409	162,467
Allowance for loan losses	1,816	1,764	888
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member]
Loans receivable, gross	363,299	296,574
Allowance for loan losses	3,996	3,420	2,243
Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Loans receivable, gross	224,709	123,627
Allowance for loan losses	2,672	1,461	399
Consumer Portfolio Segment [Member]
Loans receivable, gross	221,941	161,336
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans receivable, gross	39,172	33,103
Allowance for loan losses	407	368	454
Consumer Portfolio Segment [Member] \| Automobile and Other Loan [Member]
Loans receivable, gross	182,769	128,233
Allowance for loan losses	2,221	2,642	2,261
Commercial Portfolio Segment [Member]
Loans receivable, gross	79,838	100,201
Allowance for loan losses	$ 470	$ 429	$ 208

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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