Condensed Consolidated Statements of Changes in Shareholders' Equity (Deficit) - USD ($) $ in Thousands	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance, as restated at Dec. 31, 2013		$ 799	$ (28,414)	$ 925,335	$ (1,448,955)	$ 383	$ (550,852)
Balance (in shares) at Dec. 31, 2013	8,624	77,788,393
Increase (Decrease) in Shareholders' Equity
Share-based compensation arrangements, net of tax benefits of $9,591 and $8,036 for the six months ended June 30, 2014 and 2015 respectively		$ 8		20,715			20,723
Share-based compensation arrangements (in shares)		839,090
Foreign currency translation adjustment						(81)	(81)
Net income (loss), as restated					(18,693)		(18,693)
Balance, as restated at Jun. 30, 2014		$ 807	(28,414)	946,050	(1,467,648)	302	(548,903)
Balance (in shares) at Jun. 30, 2014	8,624	78,627,483
Balance, as restated at Dec. 31, 2014		$ 813	(28,414)	956,146	(1,635,277)	(1,282)	(708,014)
Balance (in shares) at Dec. 31, 2014	8,624	79,161,817
Increase (Decrease) in Shareholders' Equity
Share-based compensation arrangements, net of tax benefits of $9,591 and $8,036 for the six months ended June 30, 2014 and 2015 respectively		$ 9		18,021			18,030
Share-based compensation arrangements (in shares)		953,721
Foreign currency translation adjustment						(1,177)	(1,177)
Net income (loss), as restated					4,852		4,852
Balance, as restated at Jun. 30, 2015		$ 822	$ (28,414)	$ 974,167	$ (1,630,425)	$ (2,459)	$ (686,309)
Balance (in shares) at Jun. 30, 2015	8,624	80,115,538