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Note 16 - Income Taxes - Significant Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ (782)	$ 17,808	$ 15,119
State	2,078	1,367	1,091
Foreign	1,810	2,215	2,439
Deferred
Federal	11,325	865	2,758
State	538	193	75
Foreign	(430)	(1,918)	(1,960)
Valuation Allowance	528	2,127	1,992
Total	$ 15,067	$ 22,657	$ 21,514

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