Derivative Financial Instruments - Additional Information (Details) - USD ($)	1 Months Ended	12 Months Ended
	Mar. 31, 2015	Apr. 25, 2020	Apr. 27, 2019	Apr. 28, 2018	Mar. 25, 2015	Jan. 31, 2014
Derivative [Line Items]
Charges related to extinguishment of debt		$ (8,134,000)
Gains or losses recognized in OCI on derivatives		0	$ 0	$ 0
Hedge ineffectiveness recorded		0	0	$ 0
Cash flow hedge gain (loss) to be reclassified into earnings over the next twelve months		(1,363,000)
Interest Rate Cap
Derivative [Line Items]
Derivative, notional amount		525,000,000
Interest Rate Cap, Funding II
Derivative [Line Items]
Derivative, notional amount		100,000,000
Interest Rate Swap Agreement
Derivative [Line Items]
Derivative, notional amount		634,029,000	553,719,000			$ 250,000,000
Percentage of senior notes						5.17%
Settlement of swap	$ 29,003,000	1,881,000	$ 89,000
Interest Rate Swap Agreement | Senior Notes 3.48%
Derivative [Line Items]
Percentage of senior notes					3.48%
Aggregate principal amount					$ 250,000,000
Interest Rate Swap Two
Derivative [Line Items]
Derivative, notional amount		$ 317,749,000