Note 5 - Loans and Allowance for Credit Losses - Schedule of Financing Receivables, Nonaccrual Status (Details) - USD ($) $ in Thousands		Sep. 30, 2023	Dec. 31, 2022
Nonaccrual with no allowance for credit loss		$ 38,731	$ 10,277
Non-accrual Loans	[1]	40,146	22,323
Construction And Land Development Loans [Member]
Nonaccrual with no allowance for credit loss		128	141
Non-accrual Loans		128	141
Commercial Real Estate Portfolio Segment [Member]
Nonaccrual with no allowance for credit loss		20,330	1,191
Non-accrual Loans		20,330	13,189
Single Family Residential Mortgages Loans [Member]
Nonaccrual with no allowance for credit loss		16,868	5,936
Non-accrual Loans		16,868	5,936
Commercial and Industrial [Member]
Nonaccrual with no allowance for credit loss		517	713
Non-accrual Loans		761	713
SBA Loans [Member]
Nonaccrual with no allowance for credit loss		861	2,245
Non-accrual Loans		2,009	2,245
Other Loans [Member]
Nonaccrual with no allowance for credit loss		27	51
Non-accrual Loans		$ 50	$ 99

[1] Included in total loans.