Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2011	$ 89,108	$ 457	$ (28,130)	$ 346,952	$ 244	$ (230,415)
Common Stock, Shares, Issued at Dec. 31, 2011		(45,741,000)	(3,219,000)
Release of performance shares, Shares		883,000
Release of performance shares, value	0	9		(9)
Stock Received for Payment of Employee Taxes on Vesting of Performance Shares and Upon Exercise of Stock Options Shares		(354,000)
Stock Received for Payment of Employee Taxes on Vesting of Performance Shares and Upon Exercise of Stock Options	(1,333)	(3)		(1,330)
Sale of subsidiary shares to non controlling interest	1,960						1,960
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	6,976			6,976
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	259				259
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	6				6
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(13,181)					12,818	363
Stock Issued During Period, Value, Acquisitions	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2012	83,795	463	(28,130)	352,589	509	(243,233)	1,597
Common Stock, Shares, Issued at Dec. 31, 2012		(46,270,000)	(3,219,000)
Release of performance shares, Shares		491,000
Release of performance shares, value	0	5		(5)
Stock Received for Payment of Employee Taxes on Vesting of Performance Shares and Upon Exercise of Stock Options Shares		(190,000)
Stock Received for Payment of Employee Taxes on Vesting of Performance Shares and Upon Exercise of Stock Options	(444)	(2)		(442)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	2,538			2,538
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	506				506
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	0				0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(18,418)					17,610	808
Stock Issued During Period, Value, Acquisitions	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2013	67,977	466	(28,130)	354,680	1,015	(260,843)	789
Common Stock, Shares, Issued at Dec. 31, 2013	(46,571,034)	(46,571,000)	(3,219,000)
Stock Issued During Period, Shares, Other		5,000
Options and SARS, Exercises in Period, Shares	5,395
Stock Issued During Period, Value, Stock Options Exercised	17	0		17
Release of performance shares, Shares		469,000
Release of performance shares, value	0	5		(5)
Stock Received for Payment of Employee Taxes on Vesting of Performance Shares and Upon Exercise of Stock Options Shares		(178,000)
Stock Received for Payment of Employee Taxes on Vesting of Performance Shares and Upon Exercise of Stock Options	(422)	(2)		(420)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	1,197			1,197
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(1,431)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(15)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(24,861)					(24,326)	(535)
Stock Issued During Period, Shares, Acquisitions		336,000
Stock Issued During Period, Value, Acquisitions	715	3		712
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2014	$ 43,177	$ 472	$ (28,130)	$ 356,181	$ (431)	$ (285,169)	$ 254
Common Stock, Shares, Issued at Dec. 31, 2014	(47,202,835)	(47,203,000)	(3,219,000)