Common Stock Warrants (Tables)

12 Months Ended

Jul. 31, 2016

Equity [Abstract]

Assumptions Used to Estimate Fair Value of Common Stock Warrants

The following assumptions were used to estimate the fair value of the common stock warrants:

	Year Ended July 31,
		2014
Expected volatility		34.9 – 37.0%
Risk-free rate		0.07 – 0.11%
Dividend yield		—%
Expected term (in years)		0.28 – 0.41
Fair value of common stock		$4.11 – $7.38