Discontinued Operations - Income (loss) from Discontinued Operations, Net of Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating expenses:
Net income (loss) from discontinued operations, net of tax	$ (10,422)	$ 1,302,387
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		247,069
Operating expenses:
Cost of revenues		157,355
Other operating expenses		24,062
Net income (loss) from discontinued operations before income taxes		65,652
Gain (loss) on disposal of discontinued operations before income taxes, net of costs to sell	(11,000)	1,661,891
(Provision for) benefit from income taxes	578	(425,156)
Net income (loss) from discontinued operations, net of tax	$ (10,422)	$ 1,302,387