Consolidated Statements of Operations (Parenthetical)	0 Months Ended	12 Months Ended
Jul. 17, 2012	Feb. 02, 2013
Income Statement [Abstract]
Preferred stock dividend, percentage	8.00%	8.00%

The percentage rate used to calculate dividend payments on preferred stock.

No definition available.

Name:	us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration