Goodwill and Acquired Intangible Assets - Allocation of Other Acquired Intangible Assets and Related Accumulated Amortization (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	9 years
Other acquired intangible assets, gross	$ 346,525	$ 382,585
Other acquired intangible assets, accumulated amortization	(145,320)	(146,542)
Other acquired intangible assets, net	$ 201,205	236,043
Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	7 years
Other acquired intangible assets, gross	$ 151,327	154,624
Other acquired intangible assets, accumulated amortization	(83,949)	(71,582)
Other acquired intangible assets, net	$ 67,378	83,042
Contracts and Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	11 years
Other acquired intangible assets, gross	$ 132,563	164,635
Other acquired intangible assets, accumulated amortization	(34,202)	(53,250)
Other acquired intangible assets, net	$ 98,361	111,385
Satellite Co-Location Rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	9 years
Other acquired intangible assets, gross	$ 8,600	8,600
Other acquired intangible assets, accumulated amortization	$ (8,600)	(8,600)
Trade Name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	7 years
Other acquired intangible assets, gross	$ 32,253	32,463
Other acquired intangible assets, accumulated amortization	(12,657)	(9,097)
Other acquired intangible assets, net	$ 19,596	23,366
Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	11 years
Other acquired intangible assets, gross	$ 21,782	22,263
Other acquired intangible assets, accumulated amortization	(5,912)	(4,013)
Other acquired intangible assets, net	$ 15,870	$ 18,250