Intangible and Other Non-Current Assets (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
Dec. 31, 2016 |
|
| Finite-Lived Intangible Assets [Line Items] | |||||
| Other Assets, Noncurrent | $ 23 | $ 23 | $ 50 | ||
| Deferred Costs and Other Assets | 14,616 | 14,616 | 14,957 | ||
| Tradenames [Member] | |||||
| Finite-Lived Intangible Assets [Line Items] | |||||
| Other Assets, Noncurrent | 11,663 | 11,663 | 11,663 | ||
| Noncompete Agreements [Member] | |||||
| Finite-Lived Intangible Assets [Line Items] | |||||
| Finite-Lived Intangible Assets, Net | 2,930 | 2,930 | 3,244 | ||
| Finite-Lived Intangible Assets, Accumulated Amortization | 5,908 | 5,908 | $ 5,501 | ||
| Amortization of Intangible Assets | $ 135 | $ 106 | $ 407 | $ 308 | |
| Noncompete Agreements [Member] | Minimum [Member] | |||||
| Finite-Lived Intangible Assets [Line Items] | |||||
| Finite-lived intangible assets, useful life | 1 year | ||||
| Noncompete Agreements [Member] | Maximum [Member] | |||||
| Finite-Lived Intangible Assets [Line Items] | |||||
| Finite-lived intangible assets, useful life | 10 years | ||||