Note 1 - Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		$ 2,047
Finite-Lived Intangible Assets, Amortization Expense, Year Two		2,047
Finite-Lived Intangible Assets, Amortization Expense, Year Three		2,041
Finite-Lived Intangible Assets, Amortization Expense, Year Four		2,041
CooperSurgical Inc
Finite-lived Intangible Assets Acquired	$ 21,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		4,053
Finite-Lived Intangible Assets, Amortization Expense, Year Two		4,421
Finite-Lived Intangible Assets, Amortization Expense, Year Three		4,421
Finite-Lived Intangible Assets, Amortization Expense, Year Four		$ 4,421