Note 6 - Goodwill and Other Intangible Assets, Net Schedule of Future Amortization Expense for Finite Lived Assets (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 6,934
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	8,146
Finite-Lived Intangible Assets, Amortization Expense, Year Two	6,827
Finite-Lived Intangible Assets, Amortization Expense, Year Three	5,413
Finite-Lived Intangible Assets, Amortization Expense, Year Four	4,881
Finite-Lived Intangible Assets, Amortization Expense, Year Five	4,430
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	11,626
Finite-Lived Intangible Assets, Net	$ 48,257
Finite-Lived Intangible Assets, Remaining Amortization Period	15 years