Discontinued Operations - Income (loss) from discontinued operations, net of tax (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating expenses:
Net income (loss) from discontinued operations, net of tax	$ 25,161	$ 26,480	$ 43,792	$ 50,744
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operations, Revenue	88,128	92,197	194,917	186,277
Operating expenses:
Cost of revenues	54,090	54,603	120,448	113,737
Other operating expenses	8,198	4,878	17,184	9,267
Net income (loss) from discontinued operations before income taxes	25,840	32,716	57,285	63,273
(Provision for) benefit from income taxes	(679)	(6,236)	(13,493)	(12,529)
Net income (loss) from discontinued operations, net of tax	$ 25,161	$ 26,480	$ 43,792	$ 50,744