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, 2010	$ 93,989	$ 452	$ (28,130)	$ 338,521	$ 561	$ (217,415)
Common Stock, Shares, Issued at Dec. 31, 2010		(45,211,000)	(3,219,000)
Options and SARS, Exercises in Period, Shares	504,561	505,000
Stock Issued During Period, Value, Stock Options Exercised	3,605	5		3,600
Release of performance shares, Shares		549,000
Release of performance shares, value	0	5		(5)
Stock Received for Payment of Option Exercise Price Shares		(281,000)
Stock Received for Payment of Option Exercise Price	(2,660)	(3)		(2,657)
Stock Received for Payment of Employee Taxes on Vesting of Performance Shares and Upon Exercise of Stock Options Shares		(243,000)
Stock Received for Payment of Employee Taxes on Vesting of Performance Shares and Upon Exercise of Stock Options	(2,158)	(2)		(2,156)
Share-based Compensation	9,649			9,649
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(302)				(302)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(15)				(15)
Net loss	13,000					(13,000)
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)
Options and SARS, Exercises in Period, Shares	0
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
Share-based Compensation	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 loss	13,181					(12,818)	(363)
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	(46,270,136)	(46,270,000)	(3,219,000)
Options and SARS, Exercises in Period, Shares	0
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)
Sale of subsidiary shares to non controlling interest	0						0
Share-based Compensation	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 loss	18,418					(17,610)	(808)
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)