Goodwill and Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2022	Apr. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Goodwill Reclassified to Discontinued Operations	$ 21,000		$ 21,000		$ 21,400
Amortization of acquired intangible assets	$ 7,379	$ 7,399	$ 14,902	$ 13,328
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%		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