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Derivative Liability (Details) (USD $)	3 Months Ended
Derivative Liability (Details) (USD $)	May 02, 2015	Jan. 31, 2015	Dec. 07, 2011
Derivative [Line Items]
Derivative liability	$ 19,367,000us-gaap_DerivativeLiabilitiesCurrent	$ 28,448,000us-gaap_DerivativeLiabilitiesCurrent
Series B Preferred Stock [Member]
Derivative [Line Items]
Preferred stock, shares issued	1,000
Fair value of Series B Preferred Stock			15,000,000
Five-Year Senior Secured Term Loan [Member] \| Senior Secured Term Loan [Member]
Derivative [Line Items]
Term loan maturity period	5 years
Debt Instrument, Face Amount	$ 60,000,000

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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