Unaudited Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2014	$ 1,067	$ 1,300,042	$ (244,617)		$ (198,491)	$ 2,108	$ 860,109
Net loss			(13,477)			438	(13,039)
Foreign currency translation adjustment, net of taxes of zero, ($0.4) million, zero and $1.9 million, respectively					(92,597)	(126)	(92,723)
Dividends paid.						(1,690)	(1,690)
Stock-based compensation	8	2,822		$ (146)			2,684
Balance at Jun. 30, 2015	$ 1,075	1,302,864	(258,094)	(146)	(291,088)	730	755,341
Balance at Dec. 31, 2015		1,305,930	(376,376)		(366,309)	525	563,770
Net loss			(38,308)			280	(38,028)
Foreign currency translation adjustment, net of taxes of zero, ($0.4) million, zero and $1.9 million, respectively					16,872	40	16,912
Stock-based compensation		3,077		(65)			3,012
Balance at Jun. 30, 2016		$ 1,309,007	$ (414,684)	$ (65)	$ (349,437)	$ 845	$ 545,666