CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ (239,835)	$ 24,484	$ 41,569
Other comprehensive income (loss):
Unrealized gain (loss) on derivatives, net of income tax provision (benefit) of $74 and ($31), respectively	657	(284)
Unrealized gain (loss) on available for sale securities	(279)	275
Reclassification of unrealized loss on interest rate swaps, net of income tax benefit of $903			1,362
Foreign currency translation adjustment	1,748	(3,747)	36
Total other comprehensive income (loss)	2,126	(3,756)	1,398
Total comprehensive income (loss)	$ (237,709)	$ 20,728	$ 42,967