Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Expense (Benefit), Total	$ 6,812	$ 12,078	$ 17,538
Effective Income Tax Rate Reconciliation, Percent, Total	17.00%	19.20%	21.60%
Effective Income Tax Rate Continuing Operations Increase (Decrease) During the Period	2.20%
Increase (Decrease) in Income Taxes Payable, CARES Act	$ (2,900)
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	0
Undistributed Earnings of Foreign Subsidiaries	2,700
Operating Loss Carryforwards, Total	$ 14,000
Operating Loss Carryforwards, Expiration Period (Year)	10 years
Deferred Tax Assets, Valuation Allowance, Total	$ 13,999	$ 9,138
Unrecognized Tax Benefits, Ending Balance	$ 4,364	$ 4,830	$ 4,598
GERMANY
Operating Loss Carryforwards, Percentage of Taxable Income	60.00%
NETHERLANDS
Operating Loss Carryforwards, Percentage of Taxable Income	50.00%