Organization And Operations (Details)	12 Months Ended
	Dec. 31, 2011
Organization And Operations [Line Items]
Number of facilities owned by company	48
Number of facilities leased to other operators	2
Number of facilities operated by company	67
Number of facilities owned and operated by company	46
Number of states in which company operates facilities	20
Millen Georgia Facility [Member]
Organization And Operations [Line Items]
Number of beds at the facility	1,124
Expected completion date of facility	2012