Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2018		30,184
Beginning balance at Dec. 31, 2018	$ 457,100	$ 9,053	$ 400,989	$ 81,450	$ (34,392)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of new accounting principle, net of tax	(767)			(767)
Net loss	(24,228)			(24,228)
Foreign currency translation adjustment, net of tax	1,809				1,809
Foreign currency hedge, net of tax	210				210
Non-cash compensation	2,434		2,434
Net settlement of vested stock awards (in shares)		63
Net settlement of vested stock awards	(341)	$ 19	(360)
Ending balance (in shares) at Mar. 31, 2019		30,247
Ending Balance at Mar. 31, 2019	436,217	$ 9,072	403,063	56,455	(32,373)
Beginning balance (in shares) at Dec. 31, 2019		30,519
Beginning balance at Dec. 31, 2019	436,670	$ 9,153	409,034	48,673	(30,190)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of new accounting principle, net of tax	(1,034)			(1,034)
Net loss	(199,727)			(199,727)
Foreign currency translation adjustment, net of tax	(9,861)				(9,861)
Foreign currency hedge, net of tax	200				200
Non-cash compensation	1,530		1,530
Net settlement of vested stock awards (in shares)		109
Net settlement of vested stock awards	(349)	$ 30	(379)
Ending balance (in shares) at Mar. 31, 2020		30,628
Ending Balance at Mar. 31, 2020	$ 227,429	$ 9,183	$ 410,185	$ (152,088)	$ (39,851)