Unaudited Interim Financial Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2019	Apr. 01, 2019
Unaudited Interim Financial Information
Lease, Practical Expedients, Package [true false]	true
Lease, Practical Expedient, Use of Hindsight [true false]	false
Right-of-use-assets	$ 50,933
Lease liabilities	$ 55,417
Effect | ASU 2016-02
Unaudited Interim Financial Information
Right-of-use-assets		$ 54,762
Lease liabilities		$ 59,157