Note 14 - Employee Benefit Plan (Details Textual) - Defined Contribution Plan, 401 K [Member] - Pension Plan [Member] - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	100.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 822,000	$ 347,000	$ 158,000