COMMITMENTS AND CONTINGENCIES (Details) - KBS Capital Advisors LLC - Subordinated Performance Fee Due Upon Termination	12 Months Ended
Dec. 31, 2019 shares
Related Party Transaction [Line Items]
Shares to be awarded (in shares)	3,411,737
Period of redemption after vesting	60 days
Termination fee as percent of liquidation proceeds	50.00%
After November 1, 2024
Related Party Transaction [Line Items]
Period of redemption of remaining shares	60 days

Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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-Name Accounting Standards Codification
-Topic 210
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