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Debt - Textual (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 28, 2019 USD ($) | Sep. 29, 2018 USD ($) | Oct. 31, 2015 USD ($)
Debt Instrument [Line Items] |  |  |
Outstanding borrowings | $ 4,500,000 | $ 4,500,000 |
Line of credit | New term loan |  |  |
Debt Instrument [Line Items] |  |  |
Fixed charge ratio, Covenant 2 | 1.0 | 1.0 |
Fixed charge ratio, Covenant 1 | 1.15 | 1.15 |
Revolving credit facility | Line of credit |  |  |
Debt Instrument [Line Items] |  |  |
Maximum borrowing capacity |  |  | $ 80,000,000.0
Fixed charge ratio, Covenant 2 | 1.0 | 1.0 |
Fixed charge ratio, Covenant 1 | 1.15 | 1.15 |
London interbank offered rate (LIBOR) | New term loan |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, spread on variable rate | 2.25% |  |
London interbank offered rate (LIBOR) | Revolving credit facility | Line of credit |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, spread on variable rate | 2.50% |  |

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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