Segment Information - Segment Description (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Diversified industrial | ||||
| Segment Reporting Information [Line Items] | ||||
| Management Fees Revenue | $ 2,900 | $ 2,689 | $ 8,813 | $ 7,443 |
| Energy | ||||
| Segment Reporting Information [Line Items] | ||||
| Management Fees Revenue | 2,000 | 2,038 | 6,113 | 6,113 |
| Financial services | ||||
| Segment Reporting Information [Line Items] | ||||
| Management Fees Revenue | $ 1,175 | $ 563 | $ 3,525 | $ 1,688 |