Operating Segments - Schedule of Segment Reporting Information (Details) (Parenthetical) - USD ($) $ in Thousands  | 
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019  | 
Jun. 30, 2018  | 
Jun. 30, 2019  | 
Jun. 30, 2018  | 
|
| Segment Reporting [Abstract] | ||||
| Net gain on exchange offer of Series B Preferred Stock of subsidiary | $ 1,596 | $ 1,596 | ||
| X | ||||||||||
- Definition Net gain on exchange offer of preferred stock of subsidiary. No definition available. 
  | 
| X | ||||||||||
- References No definition available. 
  |