Note 3 - Loans Receivable - Loans Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025	Sep. 30, 2025
Loan receivable, gross	$ 1,593,927	$ 1,628,112
Derivative basis adjustment	353	(903)
Financing Receivable, Allowance for Credit Loss	16,388	16,987	$ 16,203
Total loans receivable, net	1,577,186	1,612,028
Real Estate Portfolio Segment [Member]
Loan receivable, gross	1,081,508	1,129,211
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member]
Loan receivable, gross	353,620	376,731
Financing Receivable, Allowance for Credit Loss	3,698		3,876
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member]
Loan receivable, gross	245,236	288,529
Financing Receivable, Allowance for Credit Loss	1,800		2,562
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member]
Loan receivable, gross	420,161	402,683
Financing Receivable, Allowance for Credit Loss	3,220		2,705
Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Loan receivable, gross	62,491	61,268
Financing Receivable, Allowance for Credit Loss	992		649
Consumer Portfolio Segment [Member]
Loan receivable, gross	390,388	368,590
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member]
Loan receivable, gross	94,171	85,088
Financing Receivable, Allowance for Credit Loss	1,421		1,392
Consumer Portfolio Segment [Member] \| Automobile and Other Loan [Member]
Loan receivable, gross	296,217	283,502
Financing Receivable, Allowance for Credit Loss	1,820		2,037
Commercial Portfolio Segment [Member]
Loan receivable, gross	122,031	$ 130,311
Financing Receivable, Allowance for Credit Loss	$ 3,437		$ 2,982