7. FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
FAIR VALUE MEASUREMENTS
Senior Secured Term Loan	$ 348,250	$ 349,125
Senior Notes	200,000	200,000
Level 2
FAIR VALUE MEASUREMENTS
Senior Secured Term Loan	351,733	352,180
Senior Notes	209,000	204,500
Total Fair Value
FAIR VALUE MEASUREMENTS
Senior Secured Term Loan	351,733	352,180
Senior Notes	$ 209,000	$ 204,500