Note 15 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Income Tax Expense (Benefit), Total	$ 1,580	$ 1,473
Effective Income Tax Rate Reconciliation, Percent, Total	21.40%	24.60%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount	$ 1,900
Effective Income Tax Rate Reconciliation,Change in Fair Value of Business Acquisition Contingent Consideration Liabilities, Amount	(2,000)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount	400
Deferred Income Tax Liabilities, Net, Total	16,030		$ 4,331
Deferred Tax Assets, Valuation Allowance, Total	$ 0		$ 0