Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Receivables [Abstract]
Allowance for doubtful accounts, beginning balance	$ 210	$ 160	$ 0
Provision	918	50	160
Writeoffs	(184)	0	0
Allowance for doubtful accounts, ending balance	$ 944	$ 210	$ 160