CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (3,398)	$ 16,619	$ 9,656	$ 32,828
Other comprehensive income (loss):
Cash flow hedges	(207)	667	(3,938)	3,541
Income tax benefit (expense)	53	(172)	1,014	(910)
Foreign currency translation adjustment	(2,779)	(1,637)	(3,120)	(3,241)
Income tax benefit (expense)	(14)	0	(17)	0
Total other comprehensive (loss)	(2,947)	(1,142)	(6,061)	(610)
Total comprehensive income (loss)	$ (6,345)	$ 15,477	$ 3,595	$ 32,218