GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill

The following table summarizes the changes in the carrying amount of goodwill for the nine months ended December 31, 2019 as follows (in thousands):

Balance at March 31, 2019	$	1,715,485
Goodwill attributed to the Eastwind acquisition	1,003
Foreign currency translation impact	2,008
Balance at December 31, 2019	$	1,718,496

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 December 31, 2019 (in thousands):

	Cost		Accumulated Amortization			Net
Developed technology	$	245,850	$	(186,356	)	$	59,494
Customer relationships	770,696		(261,595		)	509,101
Distributor relationships and technology licenses	6,843		(6,104		)	739
Definite-lived trademark and trade name	39,205		(24,894		)	14,311
Core technology	7,192		(7,016		)	176
Net beneficial leases	336		(336		)	—
Non-compete agreements	292		(292		)	—
Leasehold interest	500		(500		)	—
Backlog	16,327		(16,327		)	—
Capitalized software	3,317		(3,152		)	165
Other	1,208		(938		)	270
	$	1,091,766	$	(507,510	)	$	584,256

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 nine months ended December 31, 2019 and 2018, respectively (in thousands):

	Three Months Ended				Nine Months Ended
	December 31,				December 31,
	2019		2018		2019		2018
Amortization of intangible assets included as:
Cost of product revenue	$	6,564	$	8,176	20,043		25,858
Operating expense	16,125		16,438		48,410		57,894
	$	22,689	$	24,614	$	68,453	$	83,752

Schedule of Expected Future Amortization Expense

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

2020 (remaining three months)	$	22,682
2021	79,857
2022	69,462
2023	61,758
2024	53,667
Thereafter	296,830
	$	584,256