COMMITMENTS AND CONTINGENCIES - Joint Venture Put and Call Options and Legal (Details) - USD ($) $ in Millions |
1 Months Ended | 3 Months Ended | 9 Months Ended |
|---|---|---|---|
Sep. 30, 2016 |
Dec. 31, 2015 |
Sep. 30, 2016 |
|
| Legal | |||
| Litigation settlement expense | $ 2.8 | ||
| Litigation settlement paid in escrow | $ 2.8 | ||
| Moelis Australia Holdings | |||
| Joint venture put and call options | |||
| Percentage of purchase price to be paid immediately if the Parent is public and the put option is exercised | 50.00% | 50.00% | |
| Period within which the remaining balance is to be paid if the parent is public and the put option is exercised | 18 months |