ORGANIZATION AND BASIS OF PRESENTATION (Medley LLC Reorganization Narrative) (Details)		9 Months Ended
Sep. 29, 2014 shares	Sep. 30, 2020
Common Class A
Class of Stock [Line Items]
Common stock exchange ratio		1
Medley LLC
Class of Stock [Line Items]
Conversion of pre-IPO interests to LLC Units (in shares)	2,333,333

The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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