Private Placement Investment - Additional Information (Details) - USD ($)			12 Months Ended
	Nov. 01, 2012	Aug. 16, 2012	Jan. 31, 2018	Jan. 31, 2017
Class of Stock [Line Items]
Warrants exercisable (in shares)		1,200,000
Exercise price (in USD per share)		$ 3.99
Common shares issued for convertible note and accrued interest (in shares)	1,583,210
Deferred finance costs			$ 128,000	$ 199,000
Warrants exercised (in shares)			0	0
Warrants canceled (in shares)			0	0
Common Stock Warrant
Class of Stock [Line Items]
Warrants exercisable (in shares)			1,400,000
Exercise price (in USD per share)			$ 4.00
Convertible Subordinated Notes Payable
Class of Stock [Line Items]
Convertible notes payable	$ 5,699,577
Private Placement
Class of Stock [Line Items]
Proceeds allocation		$ 12,000,000
Placement and other advisor fees		1,894,000
Cost of warrants issued		754,000
Deferred finance costs		611,000
Issuance of common stock warrants		263,000
Private Placement | Series A Preferred Stock
Class of Stock [Line Items]
Proceeds allocation		$ 6,546,146
Issuance of common stock (in shares)		2,416,785
Preferred stock dividend rate (as a percent)		0.00%
Share price (in USD per share)		$ 3.00	$ 8.00
Common shares issued for convertible note and accrued interest (in shares)		1,583,210
Preferred stock, discount on shares		$ 1,020,000	$ 4,410,000
Private Placement | Common Stock Warrant
Class of Stock [Line Items]
Proceeds allocation		$ 1,688,116
Warrants exercisable (in shares)		1,200,000
Exercise price (in USD per share)		$ 3.99
Private Placement | Convertible Subordinated Notes Payable
Class of Stock [Line Items]
Proceeds allocation		$ 3,765,738
Convertible notes payable		$ 5,699,577