Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Income Taxes [Line items]
Statutory standard corporate income tax rate	25.00%
Provision for income taxes	$ 961,000	$ 1,254,000
Additional deferred tax expense		1,200,000
Net operating loss carry forwards	363,000,000
Net operating loss carry forwards, subject to expiration	$ 28,400,000
Net operating loss carry forwards expiration year, beginning	2023
Net operating loss carry forwards expiration year, ending	2029
Net operating loss carry forwards expiration period	20 years
Corporate income tax rate	25.00%
Deferred tax expense	$ 335,000
Unrecognized benefit	1,216,000	1,216,000	$ 1,216,000
Interest expense carryforward, disqualified as interest expense	613,000
Impact of reassessment of transfer pricing policies	603,000
Unrecognized tax benefits, Income tax penalties and interest accrued	0	$ 0
Tax charge on other comprehensive loss	0
Tax Year 2042 [Member]
Income Taxes [Line items]
Net operating loss carry forwards, subject to expiration	$ 200
Jersey Taxing Authority [Member]
Income Taxes [Line items]
Statutory standard corporate income tax rate	0.00%
Corporate income tax rate	0.00%