Note 19 - Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Federal										$ 51
State									(276)	252	490
Foreign									14,040	19,175	13,983
									13,764	19,478	14,473
Foreign									18,073	(34,736)	13,135
									18,073	(34,736)	13,135
	$ 2,450	$ 11,988	$ 7,890	$ 9,509	$ 11,438	$ (38,211)	$ 6,056	$ 5,459	$ 31,837	$ (15,258)	$ 27,608