Leases Supplemental information related to leases (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2020 USD ($)
Cash paid for amounts included in the measurement of operating lease liabilities	$ 11,983
Right-of-use assets obtained in exchange for new operating leases	$ 14,957
Weighted Average Remaining Lease Term (years)	5 years 7 months 9 days
Weighted Average Collateralized Incremental Borrowing Rate	4.10%