GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the six months ended September 30, 2019 are as follows (in thousands):

Balance at March 31, 2019	$	1,715,485
Goodwill attributed to the Eastwind acquisition	1,003
Foreign currency translation impact	2,874
Balance at September 30, 2019	$	1,719,362

Schedule of Intangible Assets

Intangible assets include the indefinite-lived trade name with a carrying value of $18.6 million and the following amortizable intangible assets at September 30, 2019 (in thousands):

	Cost		Accumulated Amortization			Net
Developed technology	$	245,601	$	(180,008	)	$	65,593
Customer relationships	769,809		(246,711		)	523,098
Distributor relationships and technology licenses	6,827		(5,814		)	1,013
Definite-lived trademark and trade name	39,166		(23,414		)	15,752
Core technology	7,192		(6,959		)	233
Net beneficial leases	336		(336		)	—
Non-compete agreements	292		(292		)	—
Leasehold interest	500		(500		)	—
Backlog	16,299		(16,299		)	—
Capitalized software	3,317		(3,083		)	234
Other	1,208		(932		)	276
	$	1,090,547	$	(484,348	)	$	606,199

Intangible assets include the indefinite-lived trade name with a carrying value of $18.6 million and the following amortizable intangible assets at March 31, 2019 (in thousands):

	Cost		Accumulated Amortization			Net
Developed technology	$	242,259	$	(168,289	)	$	73,970
Customer relationships	772,969		(218,043		)	554,926
Distributor relationships and technology licenses	6,882		(5,237		)	1,645
Definite-lived trademark and trade name	39,304		(20,586		)	18,718
Core technology	7,192		(6,845		)	347
Net beneficial leases	336		(336		)	—
Non-compete agreements	292		(292		)	—
Leasehold interest	500		(500		)	—
Backlog	16,397		(16,397		)	—
Capitalized software	3,317		(2,690		)	627
Other	1,208		(923		)	285
	$	1,090,656	$	(440,138	)	$	650,518

Finite-lived Intangible Assets Amortization Expense

The following table provides a summary of amortization expense for the three and six months ended September 30, 2019 and 2018, respectively (in thousands):

	Three Months Ended				Six Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Amortization of intangible assets included as:
Cost of product revenue	$	6,677	$	8,491	13,479		17,682
Operating expense	16,137		17,986		32,285		41,456
	$	22,814	$	26,477	$	45,764	$	59,138

Schedule of Expected Future Amortization Expense

The following is the expected future amortization expense at September 30, 2019 for the fiscal years ending March 31 (in thousands):

2020 (remaining six months)	$	45,337
2021	79,776
2022	69,388
2023	61,690
2024	53,605
Thereafter	296,403
	$	606,199