Debt - Minimum EBITDA Levels (Details) - Credit Agreement	12 Months Ended
	Jan. 31, 2018 USD ($)
July 31, 2017
Debt Instrument [Line Items]
Minimum EBITDA level	$ (1,250,000)
October 31, 2017
Debt Instrument [Line Items]
Minimum EBITDA level	(1,000,000)
January 31, 2018
Debt Instrument [Line Items]
Minimum EBITDA level	(700,000)
April 30, 2018
Debt Instrument [Line Items]
Minimum EBITDA level	(35,869)
July 31, 2018
Debt Instrument [Line Items]
Minimum EBITDA level	414,953
October 31, 2018
Debt Instrument [Line Items]
Minimum EBITDA level	1,080,126
January 31, 2019
Debt Instrument [Line Items]
Minimum EBITDA level	1,634,130
April 30, 2019
Debt Instrument [Line Items]
Minimum EBITDA level	1,842,610
July 31, 2019
Debt Instrument [Line Items]
Minimum EBITDA level	2,657,362
October 31, 2019 and each fiscal quarter thereafter
Debt Instrument [Line Items]
Minimum EBITDA level	$ 3,613,810