Annual report pursuant to Section 13 and 15(d)

Concentration Of Risk

Concentration Of Risk
12 Months Ended
Dec. 31, 2011
Concentration Of Risk [Abstract]  
Concentration Of Risk

14. Concentration of Risk

The Company's Louisiana facilities accounted for approximately 31.1%, 33.0% and 34.0% of net service revenue during the years ended December 31, 2011, 2010 and 2009 respectively. Any material change in the current economic or competitive conditions in Louisiana could have a disproportionate effect on the Company's overall business results.