INVESTMENT IN AND ADVANCES TO UNCONSOLIDATED JOINT VENTURES - Summary of Allocated Earnings (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Schedule of Equity Method Investments [Line Items]
Earnings (loss) from investment in unconsolidated joint ventures	$ 1,094	$ 401	$ 3,617	$ 466
Grace Lake JV, LLC
Schedule of Equity Method Investments [Line Items]
Earnings (loss) from investment in unconsolidated joint ventures	517	605	1,549	1,138
24 Second Avenue Holdings LLC
Schedule of Equity Method Investments [Line Items]
Earnings (loss) from investment in unconsolidated joint ventures	$ 577	$ (204)	$ 2,068	$ (672)

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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