Leases - Summary of Maturities of Lease Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Leases [Abstract]
Operating Leases, Expected for the remainder of fiscal year 2021	$ 44,488
Operating Leases, Expected for fiscal year 2022	60,739
Operating Leases, Expected for fiscal year 2023	56,773
Operating Leases, Expected for fiscal year 2024	55,533
Operating Leases, Expected for fiscal year 2025	51,456
Operating Leases, Thereafter	122,896
Operating Leases, Total future lease payments required	391,885
Operating Leases, Less: interest	65,913
Operating Leases, Total	325,972
Finance Leases, Expected for the remainder of fiscal year 2021	9,900
Finance Leases, Expected for fiscal year 2022	12,000
Finance Leases, Expected for fiscal year 2023	12,000
Finance Leases, Expected for fiscal year 2024	12,000
Finance Leases, Expected for fiscal year 2025	12,000
Finance Leases, Thereafter	15,000
Finance Leases, Total future lease payments required	72,900
Finance Leases, Less: interest	10,539
Finance Leases, Total	$ 62,361	$ 64,956