Note 14 - Employee Benefit Plans (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	12.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 53,000	$ 45,000
Bonus Percentage	5.00%
Accrued Bonuses, Current	$ 1,063,000	2,670,000
President [Member]
Bonus, Maximum Threshold	1,000,000
Accrued Bonuses, Current	$ 447,000	$ 1,000,000
For Employees Contributing 1 Percent of Gross Earnings [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	0.50%
For Employees Contributing 2 to12 Percent of Gross Earnings [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	1.00%