Business Combination (Details Textual) (USD $)	1 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended
	Feb. 28, 2011 BII Holding [Member]	Oct. 02, 2011 BII Holding [Member]	Oct. 02, 2011 BII Holding [Member]	Feb. 10, 2011 BII Holding [Member]	Oct. 02, 2011 Cornell Companies, Inc. [Member]	Oct. 02, 2011 Cornell Companies, Inc. [Member]	Aug. 12, 2010 Cornell Companies, Inc. [Member]
Additional Business Combination (Textual) [Abstract]
Outstanding common stock				100.00%			100.00%
Aggregate consideration of acquisition, Net of cash acquired							$ 618,300,000
Cash consideration				409,600,000
Cash acquired from acquisition	9,700,000
Merger consideration placed in escrow account for one-year period to satisfy applicable indemnification claims				12,500,000
Accrued interest outstanding under BI's senior term loan				78,400,000
Accrued interest outstanding under BI's senior subsidiary note purchase agreement				107,500,000
Non recurring transaction costs			4,300,000		100,000	6,800,000
Revenue, excluding intercompany transactions		31,100,000	79,800,000
Earnings, excluding intercompany transactions		4,600,000	9,400,000
Recovery of accounts receivable and insurance settlement for property as reduction in operating expense					1,400,000	3,900,000
Decrease in goodwill due to measurement adjustment					$ 7,400,000