Summary of Significant Accounting Policies - Deferred Financing (Details) - USD ($) $ in Thousands  | 
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015  | 
Dec. 31, 2014  | 
Dec. 31, 2013  | 
|
| Changes in deferred financing costs | |||
| Balance at the beginning of the period | $ 2,485 | $ 2,216 | $ 2,794 | 
| Write-off of unamortized capitalized deferred financing costs | (701) | ||
| Deferred financing costs capitalized on new debt | 1,549 | ||
| Amortization of deferred financing costs | (148) | (579) | (578) | 
| Balance at the end of the period | $ 2,337 | $ 2,485 | $ 2,216 | 
| X | ||||||||||
- References No definition available. 
  | 
| X | ||||||||||
- Definition Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Definition Net amount of long-term deferred finance costs capitalized at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Definition Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  |