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Derivative Financial Instruments - General Information (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) instrument agreement | Dec. 29, 2013 agreement | Sep. 30, 2018 USD ($) instrument | Oct. 01, 2017 USD ($) instrument | Sep. 29, 2013 agreement | Oct. 02, 2016 instrument
Not designated as hedging instruments |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |
Number of derivative instruments | instrument | 0 |  | 0 | 0 |  | 0
Interest rate swap agreements | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |
Number of derivative agreements | agreement | 5 | 2 |  |  | 3 |
Amount of effective portion of derivatives before tax effect |  |  | $ (1,300,000) | $ (50,000) |  |
Period of reclassification from accumulated other comprehensive income to interest expense |  |  |  | 12 months |  |
Amount expected to be reclassified from accumulated other comprehensive income to interest expense |  |  | (1,300,000) | $ (50,000) |  |
Interest Rate Swap, Fixed Rate of 2.79%, Expiration July 2023, One | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |
Notional Amount (in thousands) | $ 50,000,000 |  | $ 50,000,000 |  |  |
Fixed Rate | 2.79% |  | 2.79% |  |  |
Interest Rate Swap, Fixed Rate of 2.79%, Expiration July 2023, Two | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |
Notional Amount (in thousands) | $ 50,000,000 |  | $ 50,000,000 |  |  |
Fixed Rate | 2.79% |  | 2.79% |  |  |
Interest Rate Swap, Fixed Rate of 2.79%, Expiration July 2023, Three | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |
Notional Amount (in thousands) | $ 50,000,000 |  | $ 50,000,000 |  |  |
Fixed Rate | 2.79% |  | 2.79% |  |  |
Interest Rate Swap, Fixed Rate of 2.79%, Expiration July 2023, Four | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |
Notional Amount (in thousands) | $ 50,000,000 |  | $ 50,000,000 |  |  |
Fixed Rate | 2.79% |  | 2.79% |  |  |
Interest Rate Swap, Fixed Rate of 2.79%, Expiration July 2023, Five | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |
Notional Amount (in thousands) | $ 50,000,000 |  | $ 50,000,000 |  |  |
Fixed Rate | 2.79% |  | 2.79% |  |  |
Foreign currency forward contracts and interest rate swap agreements | Derivatives designated as hedging instruments |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |
Ineffective portion of derivative instruments |  |  | $ 0 | 0 |  |
Amounts excluded from effectiveness testing |  |  | $ 0 | $ 0 |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Represents the portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing the amount excluded from the assessment of hedge effectiveness. + References No definition available. + Details
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- Definition Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion + References No definition available. + Details
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- Definition Represents the number of derivative agreements entered into by the entity during the reporting period. + References No definition available. + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Definition Estimated period for the anticipated transfer of gain (loss), net, from accumulated other comprehensive income into earnings, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80845-113994 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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