Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Current:
State	$ 16	$ 12
Foreign	425	443
Total current tax provision	441	455
Deferred:
Federal		(8)
Foreign	37	18
Total deferred tax provision	37	10
Provision for income taxes	$ 478	$ 465	$ 634