Note 11 - Commitments and Contingencies - Summary of the Total Unfunded, or Off-balance Sheet, Credit Extension Commitments (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Total Unfunded Commitments	$ 889,854
Commitments to Extend Credit [Member] | Revolving Home Equity And Credit Card Lines Member [Member]
Total Unfunded Commitments	104,374
Commitments to Extend Credit [Member] | Construction Loans [Member]
Total Unfunded Commitments	279,861
Commitments to Extend Credit [Member] | Other Loans [Member]
Total Unfunded Commitments	449,459
Standby Letters of Credit [Member]
Total Unfunded Commitments	$ 56,160