Goodwill and Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Apr. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Goodwill derecognized	$ 8,500
Amortization of acquired intangible assets	$ 29,811	$ 28,729	$ 5,482
Euro Broadband Infrastructure Sarl Step Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Percentage of additional interest purchased in subsidiary acquired		51.00%		51.00%
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Other acquired intangible assets estimated useful lives	2 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Other acquired intangible assets estimated useful lives	20 years