Condensed Consolidated Balance Sheets (Parenthetical) (Successor [Member], USD $) In Thousands, except Share data	Aug. 15, 2011	Jan. 31, 2011
Successor [Member]
Accounts receivable, allowance for doubtful accounts	$ 161	$ 92
Property and equipment, accumulated depreciation and amortization	74,614	36,342
Property under capital leases, accumulated amortization	$ 6,940	$ 3,638
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100	100
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100