Leases and Other Commitments - Schedule of Supplemental Lease Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Weighted-average remaining lease term in years	6 years 4 months 24 days	6 years 4 months 24 days
Weighted-average discount rate	3.30%	3.30%
Right-of-use assets obtained in exchange for lease liabilities	$ 11,715	$ 28,137
Reductions to right-of-use assets resulting from reductions to lease liabilities	$ (2,120)	$ (4,669)