Note 10 - Intangible Assets - Risk Characteristics of Loans Being Serviced (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Original Term Thirty Year Fixed Rate [Member]
Loan Principal Balance	$ 104,278
Weighted Average Interest Rate	2.89%
Weighted Average Remaining Term (Month)	133 months
Number of Loans	1,006
Original Term Fifteen Year Fixed Rate [Member]
Loan Principal Balance	$ 428,481
Weighted Average Interest Rate	3.60%
Weighted Average Remaining Term (Month)	306 months
Number of Loans	2,678