Debt - Minimum EBITDA Levels (Details) (Credit Agreement, USD $)	12 Months Ended
	Jan. 31, 2015
Debt Instrument [Line Items]
Minimum EBITDA level	$ 0
April 30, 2015
Debt Instrument [Line Items]
Minimum EBITDA level	(2,500,000)
July 31, 2015
Debt Instrument [Line Items]
Minimum EBITDA level	(1,750,000)
October 31, 2015
Debt Instrument [Line Items]
Minimum EBITDA level	(750,000)
January 31, 2016
Debt Instrument [Line Items]
Minimum EBITDA level	$ 500,000