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SIGNIFICANT ACCOUNTING POLICIES - Reclassifications (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2018
Dec. 31, 2017
Reclassifications          
Decrease (increase) in escrow, deposits, and other assets and receivables $ (1,183) $ 252 $ (1,734)    
Increase (decrease) in accrued expenses and other liabilities 1,146 5,885 (1,281)    
Net (decrease) increase in cash, cash equivalents and restricted cash 2,065 (3,782) 3,250    
Cash, cash equivalents and restricted cash at beginning of year 14,668 18,450 15,200    
Cash, cash equivalents and restricted cash at end of year 16,733 14,668 18,450    
Cash and cash equivalents       $ 15,204 $ 13,766
Restricted cash       1,106 443
Restricted cash included in escrow, deposits and other assets and receivables       423 459
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows 14,668 18,450 15,200 $ 16,733 14,668
Accounting Standards Update 2016-18 | As Previously Reported          
Reclassifications          
Decrease (increase) in escrow, deposits, and other assets and receivables   179 (731)    
Increase (decrease) in accrued expenses and other liabilities   6,086 (850)    
Net (decrease) increase in cash, cash equivalents and restricted cash   (3,654) 4,684    
Cash, cash equivalents and restricted cash at beginning of year 13,766 17,420 12,736    
Cash, cash equivalents and restricted cash at end of year   13,766 17,420    
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows $ 13,766 $ 17,420 $ 12,736   $ 13,766