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Long-term Debt - Schedule of Long-term Debt (Details) (Parenthetical) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017 | Mar. 31, 2018
Debt issuance costs net |  | $ 115 | $ 97
Revolving Credit [Member] |  |  |
Debt due date | Mar. 24, 2021 |  |
Term Loan [Member] |  |  |
Debt due date | Mar. 24, 2021 |  |
Effective interest rate | 5.30% | 5.30% |
Principal amount | $ 102 | $ 102 |
Capital Lease [Member] |  |  |
Debt interest rate | 11.90% | 11.90% |

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