Related-Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related-party transactions
Principal repayments	$ 366	$ 781
Manager \| Aircraft Lease Entered into During August 2014
Related-party transactions
Expenses	1,872	1,872	$ 1,248
Employees
Related-party transactions
Unsecured promissory notes from employees	$ 189	$ 552
Employees \| Unsecured Promissory Notes
Related-party transactions
Interest rates (as a percent)	4.00%	4.00%
Principal repayments	$ 366	$ 781	0
Interest income recognized	13	27	25
Moelis Asset Management LP
Related-party transactions
Fee for services	537	1,118	1,283
Due from related party	0	0
Revenue from related parties	1,882	1,240	$ 7,281
Revenue balances due from related parties	1,628	0
Corporate Joint Venture
Related-party transactions
Due from related party	$ 1,673	$ 128

Represents the amount of fee paid for certain services resulting from transactions with related party.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Amount of interest income earned from interest-bearing assets owed to the entity by related party.

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For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

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No definition available.

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The cash inflow from a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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