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Credit Facilities - Narrative (Details) - Secured Debt | 1 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2019 USD ($)
Term Loans |  |
Line of Credit Facility [Line Items] |  |
Secured term loan, face amount | $ 70,000,000 | $ 70,000,000
Fixed charge coverage ratio |  | 1.25
Ratio of funded indebtedness to EBITDA through maturity |  | 3.25
Voluntary repayments of lines of credit | $ 3,900,000 |
Number of quarterly principal installments voluntarily paid | 3 |
Term Loans | Excess Cash Flows Greater Than Or Equal to 2.50 |  |
Line of Credit Facility [Line Items] |  |
Percentage of excess cash flow for each year of funded indebtedness to EBDTA |  | 75.00%
Ratio of funded indebtedness to adjusted EBDTA, actual |  | 2.50
Term Loans | Excess Cash Flows Less Than 2.50 But Greater Than 1.50 [Member] |  |
Line of Credit Facility [Line Items] |  |
Percentage of excess cash flow for each year of funded indebtedness to EBDTA |  | 50.00%
Term Loans | Excess Cash Flows Equal to 1.50 |  |
Line of Credit Facility [Line Items] |  |
Ratio of funded indebtedness to adjusted EBDTA, actual |  | 1.5
Term Loans | Excess Cash Flows Less Than 1.50 |  |
Line of Credit Facility [Line Items] |  |
Percentage of excess cash flow for each year of funded indebtedness to EBDTA |  | 0.00%
Ratio of funded indebtedness to adjusted EBDTA, actual |  | 1.5
Term Loans | Maximum |  |
Line of Credit Facility [Line Items] |  |
Ratio of funded indebtedness to EBITDA through maturity |  | 4.25
Term Loans | Maximum | Excess Cash Flows Less Than 2.50 But Greater Than 1.50 [Member] |  |
Line of Credit Facility [Line Items] |  |
Ratio of funded indebtedness to adjusted EBDTA, actual |  | 2.50
Term Loans | LIBOR |  |
Line of Credit Facility [Line Items] |  |
Interest rate spread | 2.42% | 2.42%
Term Loans | LIBOR | Maximum |  |
Line of Credit Facility [Line Items] |  |
Interest rate spread | 4.50% | 4.50%
Term Loans | LIBOR | Minimum |  |
Line of Credit Facility [Line Items] |  |
Interest rate spread | 2.50% | 2.50%
Revolving Line of Credit |  |
Line of Credit Facility [Line Items] |  |
Line of credit, maximum borrowing capacity | $ 25,000,000 | $ 25,000,000
Line of credit, current borrowing capacity | 19,600,000 | 19,600,000
Line of credit, unused borrowing capacity | 19,600,000 | 19,600,000
Letter of Credit |  |
Line of Credit Facility [Line Items] |  |
Line of credit, current borrowing capacity | 3,000,000 | 3,000,000
Line of credit, unused borrowing capacity | $ 0 | $ 0

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