Long-Term Debt - Narrative (Details) - USD ($)		3 Months Ended	6 Months Ended		12 Months Ended		14 Months Ended	15 Months Ended	38 Months Ended
	Nov. 20, 2019	Sep. 28, 2021	Jun. 29, 2021	Jun. 30, 2020	Oct. 03, 2023	Sep. 27, 2022	Nov. 20, 2024	Sep. 28, 2021	Nov. 20, 2024	Dec. 29, 2020	Jun. 16, 2020	May 09, 2018
Line of Credit Facility [Line Items]
Indebtedness			$ 38,764,000
Unamortized debt issuance costs			1,500,000
Letters of credit outstanding			3,200,000
Payments on long-term debt			5,042,000	$ 2,375,000
Cash on hand			$ 17,324,000							$ 7,840,000
Frequency of periodic payment			quarter
Forecast
Line of Credit Facility [Line Items]
Quarterly principal payments		$ 187,500			$ 531,250	$ 375,000	$ 625,000
Minimum
Line of Credit Facility [Line Items]
Interest rate during period			3.40%
Maximum
Line of Credit Facility [Line Items]
Interest rate during period			3.52%
2018 Swingline Subfacility
Line of Credit Facility [Line Items]
Maximum borrowing capacity												$ 10,000,000.0
First Amended Credit Facility | Federal Funds Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
First Amended Credit Facility | Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
First Amended Credit Facility | Minimum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.20%
First Amended Credit Facility | Minimum | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
First Amended Credit Facility | Minimum | Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
First Amended Credit Facility | Maximum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.35%
First Amended Credit Facility | Maximum | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.75%
First Amended Credit Facility | Maximum | Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%
Second Amended Credit Facility
Line of Credit Facility [Line Items]
Capital expenditure limit in current fiscal year per agreement											$ 12,000,000.0
Capital expenditure limit in next fiscal year per agreement											12,000,000.0
Liquidity-based performance basket in next fiscal year per agreement											12,000,000.0
Capital expenditure limit in 2022 per agreement											34,000,000.0
Capital expenditure limit in 2023 per agreement											37,000,000.0
Capital expenditure limit after 2023 per agreement											$ 45,000,000.0
Second Amended Credit Facility | LIBOR | Forecast
Line of Credit Facility [Line Items]
Basis spread on variable rate								3.25%
Second Amended Credit Facility | Minimum | LIBOR | Forecast
Line of Credit Facility [Line Items]
Basis spread on variable rate									2.00%
Second Amended Credit Facility | Maximum | LIBOR | Forecast
Line of Credit Facility [Line Items]
Basis spread on variable rate									3.00%
Revolving Credit Facility | 2018 Term Loan Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity												25,000,000.0
Revolving Credit Facility | 2018 Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity												65,000,000.0
Revolving Credit Facility | First Amended Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 75,000,000.0
Capital expenditure limit in current fiscal year per agreement	37,000,000.0
Capital expenditure limit in each year after current fiscal year	$ 45,000,000.0
Letter of Credit | 2018 Letter of Credit Subfacility
Line of Credit Facility [Line Items]
Maximum borrowing capacity												$ 15,000,000.0