Capital Stock (Tables)

12 Months Ended

Jan. 31, 2017

Equity [Abstract]

Schedule of Ordinary Shares Reserved for Future Issuance

As of January 31, 2017 and 2016, the following ordinary shares were reserved for future issuance:

	As of January 31,
	2017		2016
Shares reserved for options, restricted stock and restricted stock units		5,167,688		5,027,475
Shares reserved for employee stock purchase plan		1,252,465		974,273