REGULATORY REQUIREMENTS (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Regulatory requirements
Minimum net capital requirement	$ 250
Moelis US
Regulatory requirements
Net capital	83,828	101,690
Net capital in excess of required net capital	83,578	101,440
Moelis UK
Regulatory requirements
Net capital	37,952	42,344
Net capital in excess of required net capital	$ 37,889	$ 42,275