CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Treasury Stock	Deferred Compensation
Balance at Dec. 31, 2010	$ 346,159	$ 1,315	$ 449,754	$ (103,763)	$ (1,423)	$ 276
Balance (in shares) at Dec. 31, 2010		6,572,879			(32,386)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for stock-based compensation		22	(22)
Issuance of common stock for stock-based compensation (in shares)	112,860	112,860
Purchases of treasury stock	(18,898)				(18,898)
Purchases of treasury stock (in shares)					(596,776)
Amortization of stock-based compensation	15,074		15,074
Reclassification of prior year liability classified stock-based compensation upon issuance of awards	12,446		12,446
Net tax benefits/(shortfalls) related to stock-based compensation	(5,480)		(5,480)
Issuance of treasury stock for restricted stock grants, restricted stock unit settlements and option exercises			(4,763)		4,763
Issuance of treasury stock for restricted stock grants, restricted stock unit settlements and option exercises (in shares)					120,072
Forfeitures of restricted stock			1,514		(1,514)
Forfeitures of restricted stock (in shares)					(52,760)
Shares withheld for minimum withholding taxes for vested restricted stock, restricted stock units and options exercises	(7,601)		(4,907)		(2,694)
Shares withheld for minimum withholding taxes for vested restricted stock, restricted stock units and options exercises (in shares)					(80,656)
Payment of expenses to purchase treasury stock	(257)				(257)
Distributions of deferred compensation related to the employee stock trust			77		38	(115)
Distributions of deferred compensation related to the employee stock trust (in shares)					947
Other	(196)		(196)
Net loss	(82,124)			(82,124)
Balance at Dec. 31, 2011	259,123	1,337	463,497	(185,887)	(19,985)	161
Balance (in shares) at Dec. 31, 2011		6,685,739			(641,559)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for stock-based compensation (in shares)	2,722
Purchases of treasury stock	(1,151)				(1,151)
Purchases of treasury stock (in shares)					(66,470)
Amortization of stock-based compensation	6,800		6,800
Net tax benefits/(shortfalls) related to stock-based compensation	(377)		(377)
Issuance of treasury stock for restricted stock grants, restricted stock unit settlements and option exercises			(15,856)		15,856
Issuance of treasury stock for restricted stock grants, restricted stock unit settlements and option exercises (in shares)					524,088
Forfeitures of restricted stock			4,199		(4,199)
Forfeitures of restricted stock (in shares)					(236,429)
Clawback of certain stock-based compensation grants subject to non-competition provisions	(2,630)		(2,630)
Shares withheld for minimum withholding taxes for vested restricted stock, restricted stock units and options exercises	(3,005)		(1,695)		(1,310)
Shares withheld for minimum withholding taxes for vested restricted stock, restricted stock units and options exercises (in shares)					(46,270)
Payment of expenses to purchase treasury stock	(75)				(75)
Distributions of deferred compensation related to the employee stock trust					37	(37)
Distributions of deferred compensation related to the employee stock trust (in shares)					212
Other (in shares)		2,648
Net loss	(77,690)			(77,690)
Balance at Dec. 31, 2012	180,995	1,337	453,938	(263,577)	(10,827)	124
Balance (in shares) at Dec. 31, 2012	6,688,387	6,688,387			(466,428)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for stock-based compensation (in shares)	0
Amortization of stock-based compensation	5,592		5,592
Issuance of treasury stock for restricted stock grants, restricted stock unit settlements and option exercises			(3,324)		3,324
Issuance of treasury stock for restricted stock grants, restricted stock unit settlements and option exercises (in shares)					157,174
Forfeitures of restricted stock			1,731		(1,731)
Forfeitures of restricted stock (in shares)					(123,450)
Clawback of certain stock-based compensation grants subject to non-competition provisions	(577)		(577)
Shares withheld for minimum withholding taxes for vested restricted stock, restricted stock units and options exercises	(2,624)		(1,450)		(1,174)
Shares withheld for minimum withholding taxes for vested restricted stock, restricted stock units and options exercises (in shares)					(80,840)
Distributions of deferred compensation related to the employee stock trust					23	(23)
Distributions of deferred compensation related to the employee stock trust (in shares)					147
Net loss	(99,532)			(99,532)
Balance at Dec. 31, 2013	$ 83,854	$ 1,337	$ 455,910	$ (363,109)	$ (10,385)	$ 101
Balance (in shares) at Dec. 31, 2013	6,688,387	6,688,387			(513,397)