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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS    
Network operations, equity-based compensation expense$ 122$ 104$ 388$ 246
Selling, general, and administrative, equity-based compensation expense$ 1,782$ 1,695$ 5,619$ 4,514