Regulatory Requirements - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Regulatory Requirements
Minimum net capital requirement	$ 250
Moelis US
Regulatory Requirements
Net capital	54,509	$ 63,099
Net capital in excess of required net capital	54,259	62,849
Moelis UK
Regulatory Requirements
Net capital	21,763	23,041
Net capital in excess of required net capital	$ 21,709	$ 22,984

Regulatory requirements

No definition available.

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Amount of net capital in excess of minimum required net capital, calculated under Alternative Standard.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Rule 15c3-1
-Number 240
-Section 15c3-1

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Minimum amount of net capital of broker-dealer and its subsidiary, calculated under Alternative Standard.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Rule 15c3-1
-Number 240
-Section 15c3-1

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Amount of net capital of broker-dealer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Rule 15c3-1
-Number 240
-Section 15c3-1

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