Significant Accounting Policies - Contract Acquisition Costs (Details) - USD ($)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Capitalized Contract Costs, Net
Capitalized contract costs, amortization	$ 145,000
Prepaid Assets
Capitalized Contract Costs, Net
Capitalized contract costs, net	185,000	$ 136,000
Other Current Assets
Capitalized Contract Costs, Net
Capitalized contract costs, net	$ 114,000	$ 116,000