Note 17 - Employee Benefit Plans - (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4.00%
Employee Compensation and Benefits	$ 2,300,000	$ 1,800,000	$ 1,400,000
Deferred Compensation Arrangement with Individual, Recorded Liability	3,000,000.0	2,600,000
Deferred Compensation Arrangement with Individual, Compensation Expense	$ 507,000	$ 408,000	$ 285,000