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Debt - Textual (Details) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 31, 2018 | Sep. 29, 2018 USD ($) | Sep. 30, 2017 USD ($) | Oct. 31, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 39,764,000 | $ 39,600,000 |
J.P. Morgan Chase Bank, N.A. | Line of credit | Term Loan under Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed charge ratio, covenant one |  | 1.0 | 1.0 |
Fixed charge ratio, covenant two |  | 1.15 | 1.15 |
J.P. Morgan Chase Bank, N.A. | Line of credit | Term Loan under Credit Facility | London Interbank Offered Rate (LIBOR) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt, basis spread on variable rate |  | 2.25% |  |
Gordon Brothers Finance Company | Line of credit | Term loan under Amended Term Loan | London Interbank Offered Rate (LIBOR) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt, basis spread on variable rate | 9.50% |  |  |
Credit facility | J.P. Morgan Chase Bank, N.A. | Line of credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity |  |  |  | $ 80,000,000
Unused capacity, commitment fee percentage |  | 0.20% |  |
Fixed charge ratio, covenant one |  | 1.0 | 1.0 |
Fixed charge ratio, covenant two |  | 1.15 | 1.15 |
Credit facility | J.P. Morgan Chase Bank, N.A. | Line of credit | London Interbank Offered Rate (LIBOR) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt, basis spread on variable rate |  | 2.50% |  |
Letter of credit | J.P. Morgan Chase Bank, N.A. | Line of credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity |  |  |  | 10,000,000
Borrowing capacity |  | $ 4,500,000 | $ 4,400,000 |
Swing loan | J.P. Morgan Chase Bank, N.A. | Line of credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity |  |  |  | $ 8,000,000

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