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Note 15 - 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	Feb. 03, 2020
Income Tax Expense (Benefit), Total	$ (1,997)	$ 3,013	$ (417)	$ 4,486
Effective Income Tax Rate Reconciliation, Percent, Total	20.60%	24.20%	17.90%	24.30%
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			(1,700)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount			300
Arthrosurface [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	$ 11,200		$ 11,200		$ 11,147

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the change in fair value of business acquisition contingent consideration liabilities.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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