Related Party Transactions - Management Agreement (Details) - SP General Services LLC - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Mar. 31, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
|
| Related Party Transaction [Line Items] | ||||||
| Management fee percentage, quarterly basis (as a percent) | 1.50% | |||||
| Management agreement renewal, term (in years) | 1 year | |||||
| Notice period prior to management agreement renewal, period (in days) | 60 days | |||||
| Management Fee | ||||||
| Related Party Transaction [Line Items] | ||||||
| Services fees and reimbursable expenses | $ 2,172 | $ 2,148 | $ 6,387 | $ 6,188 | ||
| Reimbursable Expenses | ||||||
| Related Party Transaction [Line Items] | ||||||
| Services fees and reimbursable expenses | 859 | $ 448 | 3,095 | $ 1,903 | ||
| Deferred fees payable to related party | $ 888 | $ 888 | $ 695 | |||
| Related Party Debt | ||||||
| Related Party Transaction [Line Items] | ||||||
| Settlement of debt | $ 1,800 | |||||