Note 14 - Concentrations of Credit Risk (Details Textual) - Credit Concentration Risk [Member] - Commercial Real Estate, Loan Portfolio [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Residential Real Estate Loans [Member]
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure	$ 307,855	$ 241,564
Concentration Risk, Percentage	31.00%	28.00%
Commercial Real Estate Loans [Member]
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure	$ 478,078	$ 419,130
Concentration Risk, Percentage	48.00%	49.00%
College Housing and Professional Office Buildings [Member]
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure	$ 191,026	$ 167,794
Concentration Risk, Percentage	19.00%	20.00%