Preferred Stock - Series A Convertible Preferred Stock Narrative (Details) - USD ($)		12 Months Ended
	Nov. 01, 2012	Jan. 31, 2019	Jan. 31, 2018	Aug. 16, 2012
Class of Stock [Line Items]
Shares converted (in shares)		54,531
Amount converted		$ 164,000
Series A Preferred Stock
Class of Stock [Line Items]
Shares converted (in shares)		54,531
Amount converted		$ 164,000
Convertible redeemable preferred stock, shares outstanding (in shares)		2,895,464	2,949,995
Private Placement | Series A Preferred Stock
Class of Stock [Line Items]
New issuance of series A convertible preferred stock (in shares)				2,416,785
Preferred stock, par value (in USD per share)				$ 3.00
Period over which share price is evaluated		10 days
Share price (in USD per share)		$ 8.00
Period over which trade volume is evaluated		60 days
Average daily trading volume for period (in shares)		100,000
Stock price at time of conversion (in USD per share)		$ 3.00
Common shares issued for convertible note and accrued interest (in shares)	1,583,210