Goodwill and Purchased Intangibles Assets

12 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Purchased Intangibles Assets

The changes in the carrying amount of goodwill for the twelve months ended March 31, 2019 consist of the following (in thousands):



Goodwill as of March 31, 2018	$	11,828
Goodwill acquired	29,684
Goodwill as of March 31, 2019	$	41,512

Purchased intangible assets subject to amortization as of March 31, 2019 consist of the following (in thousands):



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed technology	$	18,716	$	(4,861	)	$	13,855

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 for the fiscal years ended March 31, 2019, 2018, and 2017 was $1.3 million, $1.2 million, and $1.1 million, respectively.

Estimated future amortization expense as of March 31, 2019 is as follows (in thousands):



Fiscal Years Ending March 31,	Estimated Future Amortization Expense
2020	$	5,131
2021	4,605
2022	4,119
	$	13,855