Summary of Significant Accounting Policies - Inventories and Property (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
| Land and Other Inventories | ||||
| Land and other inventories, impairment assessment | $ 300 | $ 100 | $ 535 | $ 335 |
| Land Improvements | Minimum | ||||
| Property and Equipment, net | ||||
| Estimated useful lives | 5 years | |||
| Land Improvements | Maximum | ||||
| Property and Equipment, net | ||||
| Estimated useful lives | 15 years | |||
| Building and Improvements | Minimum | ||||
| Property and Equipment, net | ||||
| Estimated useful lives | 3 years | |||
| Building and Improvements | Maximum | ||||
| Property and Equipment, net | ||||
| Estimated useful lives | 40 years | |||
| Machinery, Equipment and Fixtures | Minimum | ||||
| Property and Equipment, net | ||||
| Estimated useful lives | 2 years | |||
| Machinery, Equipment and Fixtures | Maximum | ||||
| Property and Equipment, net | ||||
| Estimated useful lives | 10 years | |||