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Related Party Transactions - Remy W. Trafelet, Henry R. Slack and George R. Brokaw (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Mar. 31, 2018
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Related Party Transaction [Line Items] |  |
Period equivalent to severance cost payment | 18 months |
Period of post-termination noncompetition and customer and employee nonsolicitation covenants | 12 months |
Remy W. Trafelet |  |
Related Party Transaction [Line Items] |  |
Annual base salary |  | $ 400
Payment to executives in cash |  | 400
Options granted in period (in shares) | 300,000 |
Period equivalent to severance cost payment | 24 months |
Henry R. Slack |  |
Related Party Transaction [Line Items] |  |
Annual base salary |  | 250
Payment to executives in cash |  | 250
Options granted in period (in shares) | 225,000 |
George R. Brokaw |  |
Related Party Transaction [Line Items] |  |
Annual base salary |  | 250
Payment to executives in cash |  | $ 250
Options granted in period (in shares) | 225,000 |
Period equivalent to severance cost payment | 18 months |

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