Goodwill and Purchased Intangibles Assets

6 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Purchased Intangibles Assets

There were no changes to the carrying amount of goodwill for the six months ended September 30, 2018.

Purchased intangible assets subject to amortization as of September 30, 2018 consist of the following (in thousands):



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed technology	$	4,900	$	(3,982	)	$	918

Purchased intangible assets subject to amortization as of March 31, 2018 consist of the following (in thousands):



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed technology	$	4,900	$	(3,588	)	$	1,312

Amortization expense of purchased intangible assets was $0.2 million and $0.4 million for the three months ended September 30, 2018 and 2017, respectively, and $0.4 million and $0.8 million for the six months ended September 30, 2018 and 2017, respectively.

Estimated future amortization expense as of September 30, 2018 is as follows (in thousands):



Fiscal Years Ending March 31,	Estimated Future Amortization Expense
2019 (remaining 6 months)	$	393
2020	525
	$	918