Description of Business and Summary of Significant Accounting Policies - Additional Information (Details) |
9 Months Ended |
|---|---|
|
Sep. 30, 2016
segment
| |
| Accounting Policies [Line Items] | |
| Number of reportable segments | 1 |
| Document period end date | Sep. 30, 2016 |
| High Desert Support Services (HDSS) | |
| Accounting Policies [Line Items] | |
| Equity method investment, percentage income or loss | 40.00% |