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Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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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% |  |

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