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INVESTMENT IN UNCONSOLIDATED JOINT VENTURES - Summary of Allocated Earnings (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Schedule of Equity Method Investments [Line Items]        
Earnings (loss) from investment in unconsolidated joint ventures $ 13 $ 10 $ 65 $ (63)
Grace Lake JV, LLC        
Schedule of Equity Method Investments [Line Items]        
Earnings (loss) from investment in unconsolidated joint ventures 266 269 533 508
24 Second Avenue Holdings LLC        
Schedule of Equity Method Investments [Line Items]        
Earnings (loss) from investment in unconsolidated joint ventures $ (253) $ (259) $ (468) $ (571)