CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited) - $ / shares	Apr. 30, 2016	Jan. 31, 2016	Jul. 06, 2015
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000	100,000,000
Common stock, shares issued	17,190,777	16,916,250
Common stock, shares outstanding	17,190,777	16,916,250