Leases (Maturities of lease liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022
Finance Lease Liabilities Payments Due [Abstract]
2023	$ 131,322
2024	97,721
2025	68,034
2026	35,396
2027	0
Thereafter	0
Total lease payments	332,473
Less: imputed interest	(20,062)
Present value of finance lease liabilities	312,411
Operating Lease Liabilities Payments Due [Abstract]
2023	24,483
2024	22,162
2025	7,188
2026	4,104
2027	3,273
Thereafter	58,654
Total lease payments	119,864
Less: inputed interest	(47,587)
Present value of operating lease liabilities	$ 72,277	$ 74,197