Cost of Revenue	9 Months Ended
Sep. 30, 2012
Cost of Revenue [Abstract]
Cost of Revenue Disclosure	3. COST OF REVENUE Substantially all of the Company’s operating costs and expenses are “cost of revenue” items. Operating costs that could be classified as general and administrative by the Company would include the Company’s corporate office costs at its Franklin, Tennessee office, which were $49.4 million and $45.6 million for the three months ended September 30, 2012 and 2011, respectively, and $153.6 million and $135.1 million for the nine months ended September 30, 2012 and 2011, respectively. Included in these amounts is stock-based compensation expense of $10.1 million and $10.9 million for the three months ended September 30, 2012 and 2011, respectively, and $30.7 million and $31.6 million for the nine months ended September 30, 2012 and 2011, respectively.

3. COST OF REVENUE

Substantially all of the Company’s operating costs and expenses are “cost of revenue” items. Operating costs that could be classified as general and administrative by the Company would include the Company’s corporate office costs at its Franklin, Tennessee office, which were $49.4 million and $45.6 million for the three months ended September 30, 2012 and 2011, respectively, and $153.6 million and $135.1 million for the nine months ended September 30, 2012 and 2011, respectively. Included in these amounts is stock-based compensation expense of $10.1 million and $10.9 million for the three months ended September 30, 2012 and 2011, respectively, and $30.7 million and $31.6 million for the nine months ended September 30, 2012 and 2011, respectively.