XML 79 R61.htm IDEA: XBRL DOCUMENT
v3.21.2

Indebtedness (Scheduled Principal Payments of Long-Term Debt) (Details) - USD ($) $ in Thousands | Oct. 03, 2021 | Sep. 27, 2020
--- | --- | ---
Debt Disclosure [Abstract] |  |
2022 | $ 894 |
2023 | 571,610 |
2024 | 372 |
2025 | 38 |
2026 | 272,964 |
Thereafter | 446,648 |
Total debt | $ 1,292,526 | $ 1,401,061

X
- Definition Long-term Debt and Lease Obligations, Maturities, Repayments of Principal after Year Five + References No definition available. + Details
Name: | jack_LongTermDebtAndLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive
Namespace Prefix: | jack_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-term Debt and Lease Obligations, Maturities, Repayments of Principal in Year Five + References No definition available. + Details
Name: | jack_LongTermDebtAndLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix: | jack_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-term Debt and Lease Obligations, Maturities, Repayments of Principal in Year Four + References No definition available. + Details
Name: | jack_LongTermDebtAndLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix: | jack_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-term Debt and Lease Obligations, Maturities, Repayments of Principal in Year Three + References No definition available. + Details
Name: | jack_LongTermDebtAndLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix: | jack_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-term Debt and Lease Obligations, Maturities, Repayments of Principal in Year Two + References No definition available. + Details
Name: | jack_LongTermDebtAndLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix: | jack_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-term Debt and Lease Obligations, Repayments of Principal in Next Twelve Months + References No definition available. + Details
Name: | jack_LongTermDebtAndLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths
Namespace Prefix: | jack_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-term Debt, Gross And Lease Obligation + References No definition available. + Details
Name: | jack_LongTermDebtGrossAndLeaseObligation
Namespace Prefix: | jack_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration