CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Treasury Stock	Additional Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Comprehensive Income
Balance at Dec. 31, 2011	$ 507,786	$ 29	$ (35,548)	$ 626,398	$ (3,781)	$ (79,312)
Balance (in shares) at Dec. 31, 2011	28,707	28,707	(1,504)
Increase (Decrease) in Stockholders' Equity
Common stock issued on exercise of stock options	73			73
Common stock issued on exercise of stock options (in shares)		10
Common stock issued under employee stock purchase plan	157			157
Common stock issued under employee stock purchase plan (in shares)		14
Common stock issued on vesting of restricted stock and restricted stock units (in shares)		5
Common stock issued in purchase of Peer 39	3,314			3,314
Common stock issued in purchase of Peer 39 (in shares)		357
Common stock issued on vesting of restricted stock units, net of shares tendered to satisfy required tax withholding	(56)			(56)
Common stock issued on vesting of restricted stock units, net of shares tendered to satisfy required tax withholding (in shares)		20
Share-based compensation	13,816			13,816
Comprehensive loss:
Foreign currency translation adjustment	2,378				2,378		2,378
Unrealized gain on derivatives, net of tax	122				122		122
Unrealized loss on available for sale securities, net of tax	(443)				(443)		(443)
Net loss	(219,010)					(219,010)	(219,010)
Total comprehensive loss	(216,953)						(216,953)
Balance at Sep. 30, 2012	$ 308,137	$ 29	$ (35,548)	$ 643,702	$ (1,724)	$ (298,322)
Balance (in shares) at Sep. 30, 2012	29,113	29,113	(1,504)