Unaudited Condensed Consolidated Statement of Stockholders' Equity - 3 months ended Mar. 31, 2017 - 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, 2016	$ 278	$ 411,983	$ 241,207	$ (148,402)	$ (64,580)	$ 9,135	$ 449,621
Balance (in shares) at Dec. 31, 2016					(2,586)
Net loss			(124,815)				(124,815)
Issuance of common stock and other	9	2,100					2,109
Treasury stock (in shares)					6
Treasury stock					$ 4,766		4,766
Deferred compensation plan		(4,737)			$ (60)	60	(4,737)
Deferred compensation plan (in shares)					(94)
Stock compensation tax adjustment			5,930				5,930
Translation adjustment				6,566			6,566
Balance at Mar. 31, 2017	$ 287	$ 409,346	$ 122,322	$ (141,836)	$ (59,874)	$ 9,195	$ 339,440
Balance (in shares) at Mar. 31, 2017					(2,674)