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Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Income Tax Expense (Benefit), Total	$ 2,511	$ 4,532	$ 6,406	$ 8,682
Effective Income Tax Rate Reconciliation, Percent, Total	16.60%	21.90%	19.40%	21.50%
Effective Income Tax Rate Continuing Operations Increase (Decrease) During the Period	(5.30%)		(2.10%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Unrecognized Tax Benefits, Ending Balance	$ 4,700		$ 4,700		$ 4,600
Income Taxes Payable, CARES Act	(2,600)		(2,600)
Deferred Tax Liabilities, CARES Act	$ 2,600		$ 2,600

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Amount of deferred tax liabilities related to the CARES Act.

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