REGULATORY REQUIREMENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Regulatory requirements
Minimum net capital requirement	$ 250
Moelis US
Regulatory requirements
Net capital	82,939	$ 41,373
Net capital in excess of required net capital	82,689	41,123
Moelis UK
Regulatory requirements
Net capital	21,253	17,586
Net capital in excess of required net capital	$ 21,197	$ 17,531