Long-Term Debt Senior Secured Second Lien Notes (Details)						12 Months Ended
	Apr. 30, 2026 USD ($)	Jun. 28, 2021 USD ($)	Apr. 06, 2021 USD ($)	Jun. 28, 2020	Jun. 23, 2020 USD ($)	Jan. 02, 2022 USD ($)	Jan. 03, 2021 USD ($)	Dec. 29, 2019 USD ($)	Sep. 30, 2021 USD ($)	Jun. 27, 2021 USD ($)	Apr. 04, 2021	Apr. 08, 2020 USD ($)	Mar. 25, 2020 USD ($)	Dec. 13, 2019	Apr. 30, 2019 USD ($)
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount						$ 9,000,000
Line of Credit Facility, Unused Borrowing Capacity						206,000,000
Debt Instrument, Redemption Price, Percentage		40.00%
Proceeds from issuance of senior secured second lien notes						300,000,000	$ 0	$ 0
Debt Issuance Costs, Net						6,490,000	7,777,000
Long-term Line of Credit						0
Loss on extinguishment of debt						$ (8,538,000)	0	$ (7,443,000)
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity															$ 550,000,000
Debt, Total Net Leverage Ratio						4.75
Debt, First Lien Leverage Ratio						5.75
Interest Rate											0.915%
First Lien Leverage Ratio						1.67								5.75
Letter of Credit [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount						$ 12,000,000
Debt, Percentage Borrowing Threshold						35.00%
First Amendment, Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount						$ 115,000,000
Line of Credit Facility, Increase (Decrease), Net						10,000,000
Term Loan B Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity															425,000,000
Repayment of Debt Quarterly Payment						1,100,000
Long-term Line of Credit						171,875,000	419,375,000
Repayments of Long-term Debt		$ 243,600,000
Loss on extinguishment of debt						8,500,000
Term Loan B Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				3.25%
Term Loan B Facility [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				2.25%
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity															35,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity															$ 125,000,000
Debt, Percent of Aggregate Amount of Borrowing														35.00%
Long-term Line of Credit						0	0
Borrowings Under Prior Revolving Credit Facility		46,000,000
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				3.50%
Revolving Credit Facility [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				2.50%
Second Amendment, Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity													$ 130,400,000
Line of Credit Facility, Increase of Borrowing Capacity													15,400,000
Line of Credit Facility, Revolving Committed Amount													$ 115,000,000
Third Amendment, Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 175,000,000									$ 145,800,000
Line of Credit Facility, Increase of Borrowing Capacity			29,200,000									$ 15,400,000
Term Loan B-1 Facility
Debt Instrument [Line Items]
Proceeds from issuance of senior secured second lien notes					$ 71,300,000
Line of Credit Facility, Additional Borrowing Capacity					$ 75,000,000
Debt Instrument, Annual Amortization Rate, Percentage Of Principal Amount					1.00%
Long-term Line of Credit						$ 0	73,875,000
Repayments of Long-term Debt		$ 74,400,000
Term Loan B-1 Facility | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					6.25%
Term Loan B-1 Facility | Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					5.25%
Debt Instrument, Interest Rate Floor					1.00%
Term Loan B And B-1 Facility
Debt Instrument [Line Items]
Debt, Number of Payments						17
Senior Notes due 2029
Debt Instrument [Line Items]
Long-term Line of Credit						$ 300,000,000	$ 0
Seventh Amendment, Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity						180,000,000			$ 215,000,000	$ 135,000,000
Line of Credit Facility, Initial Available Amount						$ 50,000,000				$ 27,000,000
Line Of Credit Facility, Percentage Of Consolidated EBITDA						0.40				0.20
Total Net Leverage Ratio						4.00				3.00
Line Of Credit Facility, Percentage Of Outstanding Terms Loans Eligible To Be Acquired						0.20
Eighth Amendment, Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Additional Borrowing Capacity									$ 40,000,000
Senior Unsecured Notes Due 2029 | Senior Notes
Debt Instrument [Line Items]
Interest Rate						5.875%
Debt Instrument, Face Amount						$ 300,000,000
Scenario, Forecast | Term Loan B Facility [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 153,800,000
Revolving Credit Facility [Member] | Line of Credit
Debt Instrument [Line Items]
Line of Credit Facility, Revolving Committed Amount			$ 115,000,000
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Line of Credit
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			3.25%
Revolving Credit Facility [Member] | Base Rate [Member] | Line of Credit
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.25%