Note 8 - Intangible Assets - Risk Characteristics of Loans Being Serviced (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Original Term Thirty Year Fixed Rate [Member]
Loan Principal Balance	$ 108,174
Weighted Average Interest Rate	2.89%
Weighted Average Remaining Term (Month)	136 months
Number of Loans	1,024
Original Term Fifteen Year Fixed Rate [Member]
Loan Principal Balance	$ 428,340
Weighted Average Interest Rate	3.56%
Weighted Average Remaining Term (Month)	308 months
Number of Loans	2,681