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Credit Facilities - Narrative (Details) $ in Millions |  | 6 Months Ended
--- | --- | ---
Jan. 16, 2018 USD ($) | Mar. 31, 2018 USD ($)
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%
Excess Cash Flows Less Than 2.50 Greater Than 2.00 |  |
Line of Credit Facility [Line Items] |  |
Percentage of excess cash flow for each year of funded indebtedness to EBDTA |  | 50.00%
Term Loans |  |
Line of Credit Facility [Line Items] |  |
Fixed charge coverage ratio |  | 0.0135
Ratio of debt to EBITDA at closing at thereafter |  | 0.0299
Ratio of debt to EBDTA for the period through December 31, 2017 |  | 3.0
Ratio of debt to EBDTA for the period ending September 30, 2018 through maturity |  | 0.025
Term Loans | Excess Cash Flows Greater Than Or Equal to 2.50 |  |
Line of Credit Facility [Line Items] |  |
Ratio of funded indebtedness to adjusted EBDTA, actual |  | 2.50
Line of Credit |  |
Line of Credit Facility [Line Items] |  |
Unused borrowing capacity |  | $ 9.4
Line of credit, maximum borrowing capacity |  | 10.0
Letter of Credit |  |
Line of Credit Facility [Line Items] |  |
Line of credit, maximum borrowing capacity |  | $ 0.6
Term Loan with Fifth Third Bank | Term Loans |  |
Line of Credit Facility [Line Items] |  |
Excess cash flow payment of loan agreement | $ 2.9 |
Maximum | Term Loans | Excess Cash Flows Less Than 2.50 Greater Than 2.00 |  |
Line of Credit Facility [Line Items] |  |
Ratio of funded indebtedness to adjusted EBDTA, actual |  | 2.50
Minimum | Term Loans | Excess Cash Flows Less Than 2.50 Greater Than 2.00 |  |
Line of Credit Facility [Line Items] |  |
Ratio of funded indebtedness to adjusted EBDTA, actual |  | 2.0

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