Operations and Summary of Significant Accounting Policies and Estimates - New Accounting Standards (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Operating lease right-of-use assets	$ 105,404
Operating Lease, Liability	$ 108,850
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Liabilities
Accounting Standards Update 2016-02 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Operating lease right-of-use assets	$ 105,400
Operating Lease, Liability	$ 108,900
Accounting Standards Update 2016-02 [Member] | Measurement Period Adjustments [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Operating lease right-of-use assets		$ 38,200
Operating Lease, Liability		$ 38,400