Goodwill and Intangible Assets (Tables)

12 Months Ended

Jul. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Goodwill

The following table provides a summary of changes in the carrying amount of the Company’s goodwill:

	Year Ended July 31,
	2016		2015		2014
	(in thousands)
Balance at beginning of period	$	14,744	$	14,744	$	—
Acquisition	—		—		14,744
Balance at end of period	$	14,744	$	14,744	$	14,744

Summary of Carrying Amount and Accumulated Amortization of Intangible Assets

The following tables provide a summary of the carrying amount and accumulated amortization of the Company’s intangible assets:

July 31, 2016	Amortization Period	Gross Amount		Accumulated Amortization			Net Carrying Value
	(dollars in thousands)
Developed technology	48-60 months	$	5,244	$	(3,079	)	$	2,165
Total		$	5,244	$	(3,079	)	$	2,165

July 31, 2015	Amortization Period	Gross Amount		Accumulated Amortization			Net Carrying Value
	(dollars in thousands)
Developed technology	48-60 months	$	5,244	$	(2,044	)	$	3,200
Customer relationships	12 months	150		(150		)	$	—
Total		$	5,394	$	(2,194	)	$	3,200

Summary of Expected Future Amortization Expense

Amortization expense was $1.0 million, $1.1 million, $0.9 million for the years ended July 31, 2016, 2015 and 2014, respectively. Expected future amortization expense as of July 31, 2016 is as follows:

	Amount
	(in thousands)
2017	$	908
2018	908
2019	349
Total	$	2,165