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Summary of Significant Accounting Policies (Details) $ in Thousands	9 Months Ended
	Dec. 28, 2019 USD ($) segment	Mar. 31, 2019 USD ($)
Segment Reporting
Operating segments | segment	2
Reportable segments | segment	1
Fair Value of Certain Financial Assets and Liabilities
Financial assets requiring fair value measurements on a recurring basis	$ 0
Financial liabilities requiring fair value measurements on a recurring basis	0
Recent Accounting Pronouncements
Right-of-use assets	160,559
Operating lease liabilities	$ 180,019
ASU No. 2016-02
Recent Accounting Pronouncements
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Right-of-use assets		$ 164,500
Operating lease liabilities		$ 179,400
ASU No. 2017-04
Recent Accounting Pronouncements
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	false

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