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Credit Facilities - Narrative (Details) - Secured Debt - Fifth Third Bank Credit Facility | 1 Months Ended | 3 Months Ended
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Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Term Loans |  |
Line of Credit Facility [Line Items] |  |
Secured term loan, face amount |  | $ 25,000,000
Number of equal installment payments |  | 59 months
Monthly installment payments |  | $ 312,500
Fixed charge coverage ratio |  | 1.35
Ratio of debt to EBITDA at closing at thereafter |  | 2.99
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 |  | 2.5
Voluntary repayments of lines of credit | $ 5,600,000 |
Period covered by voluntary repayment of line of credit | 18 months |
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 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 | Maximum | 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
Term Loans | Minimum | 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
Line of Credit |  |
Line of Credit Facility [Line Items] |  |
Line of credit, maximum borrowing capacity |  | $ 10,000,000
Line of credit, current borrowing capacity |  | 8,700,000
Line of credit, unused borrowing capacity |  | 10,000,000
Letter of Credit |  |
Line of Credit Facility [Line Items] |  |
Line of credit, current borrowing capacity |  | $ 1,300,000

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