Leases (Supplemental Cash Flow Information) (Details) $ in Thousands	9 Months Ended
	Dec. 31, 2020 USD ($)
Leases [Abstract]
Operating Leases: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows	$ 31,331
Operating Leases: Right-of-use assets obtained in exchange for lease liabilities	11,846
Finance Leases: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows	102
Finance Leases: Cash paid for amounts included in the measurement of lease liabilities: Financing cash flows	490
Finance Leases: Right-of-use assets obtained in exchange for lease liabilities	$ 363