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)	$ 8,024	$ (157,693)	$ 47,330
Other comprehensive income (loss)
Net change in fair value of interest rate swaps, net of income taxes of $493, $1,109, and $12, respectively	780	1,714	20
Foreign currency translation adjustment	80	(70)	656
Total other comprehensive income, net of tax	860	1,644	676
Total comprehensive income (loss)	$ 8,884	$ (156,049)	$ 48,006