Unaudited Condensed Consolidated Statement of Stockholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Deferred Compensation Expense [Member]	Total
Balance at Dec. 31, 2015	$ 274	$ 417,289	$ 444,181	$ (96,234)	$ (75,922)	$ 8,720	$ 698,308
Balance (in shares) at Dec. 31, 2015					(2,543)
Net loss			(163,491)				(163,491)
Dividends			4				4
Issuance of common stock	3	4,995					4,998
Treasury stock					$ 6,186		6,186
Treasury stock (in shares)					(99)
Deferred compensation plan		(6,206)			$ (208)	208	(6,206)
Deferred compensation plan (in shares)					57
Foreign currency translation gain (loss)				(21,513)			(21,513)
Balance at Sep. 30, 2016	$ 277	$ 416,078	$ 280,694	$ (117,747)	$ (69,944)	$ 8,928	$ 518,286
Balance (in shares) at Sep. 30, 2016					(2,585)