Intangible Assets Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Intangible Assets Finite Lived, Accumulated Amortization	$ (112)
Finite-Lived Intangible Assets, Net	11,412
Acquired Finite-lived Intangible Asset, Amount	11,524
Trade Name, Finite Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Trade Names, Gross	1,877
Intangible Assets Finite Lived, Accumulated Amortization	(20)
Finite-Lived Intangible Assets, Net	1,857
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets Finite Lived, Accumulated Amortization	(31)
Finite-Lived Intangible Assets, Net	710
Finite-Lived Noncompete Agreements, Gross	741
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets Finite Lived, Accumulated Amortization	(61)
Finite-Lived Intangible Assets, Net	8,845
Finite-Lived Customer Relationships, Gross	$ 8,906