Accounts and Income Taxes Payable and Accrued Liabilities - Accrued Liabilities (Detail) - USD ($)	Mar. 31, 2022	Apr. 01, 2021	Mar. 31, 2021
Payables and Accruals [Abstract]
Payroll, payroll taxes and employee benefits	$ 36,066,000		$ 43,998,000
Customer deposits	69,781,000		56,498,000
Accrued professional service fees	8,073,000		7,016,000
Self-insurance accruals	2,798,000		3,704,000
Deferred revenue	25,796,000	$ 22,514,000	22,514,000
Operating lease liabilities	13,348,000		12,765,000
Other	1,077,000		2,391,000
Total accrued liabilities	$ 156,939,000		$ 148,886,000