Goodwill and Acquired Intangible Assets

6 Months Ended

Jan. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill consisted of the following:


	Amount
	(in thousands)
Balance as of July 31, 2019	$	7,479
Goodwill activity	—
Balance as of January 31, 2020	$	7,479

Acquired intangible assets consist of developed technology and customer relationships acquired through our asset and business acquisitions. Acquired intangible assets are amortized using the straight-line method over their useful lives.

Acquired intangible assets subject to amortization consisted of the following as of January 31, 2020 and July 31, 2019:


	Gross Carrying Amount										Accumulated Amortization						Net Carrying Amount
	July 31, 2019		Additions		January 31, 2020		July 31, 2019		Amortization Expense		January 31, 2020		January 31, 2020		July 31, 2019
	(in thousands)
Developed technology	$	9,456	$	—	$	9,456	$	(897)	$	(1,405)	$	(2,302)	$	7,154	$	8,559
Customer relationships	160		—		160		(11)		(16)		(27)		133		149
Total	$	9,616	$	—	$	9,616	$	(908)	$	(1,421)	$	(2,329)	$	7,287	$	8,708

Amortization expense of acquired intangible assets for the three and six months ended January 31, 2020 was $0.6 million and $1.4 million, respectively. Amortization expense of acquired intangible assets for the three and six months ended January 31, 2019 was $0.1 million and $0.2 million, respectively. Amortization expense of developed technology and customer relationships is recorded primarily within cost of revenues, sales and marketing expenses and research and development expenses in the condensed consolidated statements of operations.

Future amortization expense of acquired intangible assets consisted of the following as of January 31, 2020:


	Amount
Year ending July 31,	(in thousands)
2020 (remaining six months)	$	1,283
2021	2,567
2022	1,960
2023	1,456
2024	21

Total	$	7,287