DEBT (Debt Issuance Costs) (Details) - Ares Management L.P $ in Thousands	9 Months Ended
Sep. 30, 2019 USD ($)
Credit Facility
Debt Issuance Costs
Unamortized debt issuance costs as of December 31, 2018	$ 4,972
Debt issuance costs incurred	1,547
Amortization of debt issuance costs	(991)
Unamortized debt issuance costs as of June 30, 2019	5,528
Senior Notes
Debt Issuance Costs
Unamortized debt issuance costs as of December 31, 2018	1,334
Debt issuance costs incurred	0
Amortization of debt issuance costs	(174)
Unamortized debt issuance costs as of June 30, 2019	$ 1,160

Debt Issuance Costs [Roll Forward]

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- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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