INTANGIBLE ASSETS AND GOODWILL

6 Months Ended

Sep. 30, 2019

Intangible Assets, Net (Including Goodwill) [Abstract]

INTANGIBLE ASSETS AND GOODWILL

INTANGIBLE ASSETS AND GOODWILL

The carrying value of intangible assets consisted of the following (in thousands):

	September 30, 2019							March 31, 2019
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed technology	$	33,466	$	(12,706	)	$	20,760	$	25,702	$	(15,409	)	$	10,293
Customer relationships	11,293		(4,534		)	6,759		9,467		(8,080		)	1,387
Trade and domain names	972		(81		)	891		2,108		(2,108		)	—
Total acquired identifiable intangible assets	$	45,731	$	(17,321	)	$	28,410	$	37,277	$	(25,597	)	$	11,680

During the six months ended September 30, 2019 the Company wrote off approximately $11.3 million of fully amortized intangible assets and the corresponding accumulated amortization.

At September 30, 2019, annual amortization of intangible assets, based upon our existing intangible assets and current useful lives, is estimated to be the following (in thousands):

	Amount
Remaining 2020	$	4,603
2021	6,673
2022	4,896
2023	3,116
2024	2,807
Thereafter	6,315
Total	$	28,410

The following table provides a summary of the changes in the carrying amounts of goodwill (in thousands):

	Total
Balance at March 31, 2019	$	39,694
Additions due to acquisitions	94,584
Foreign currency translation	(2,399		)
Balance at September 30, 2019	$	131,879