Summary of Significant Accounting Policies Intangibles (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Finite-Lived Intangible Assets, Accumulated Amortization	$ (13,579)	$ (10,185)
Finite-Lived Intangible Assets, Gross	101,449	102,493
Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	(9,405)	(6,388)
Finite-Lived Intangible Assets, Gross	59,409	59,409
Key Money Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	39 years
Finite-Lived Intangible Assets, Accumulated Amortization	(1,722)	(719)
Finite-Lived Intangible Assets, Gross	39,588	39,632
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	(2,452)	(3,078)
Finite-Lived Intangible Assets, Gross	$ 2,452	$ 3,452
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	14 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years