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SALE OF BUSINESS (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Aug. 08, 2018
USD ($)
payment
Sep. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Proceeds from the sale of business, first installment     $ 15,000 $ 0 $ 0
Future proceeds from the sale of business, second installment     3,000    
Long-term receivable (Note 4)     2,221 0  
Gain on sale of business     13,688 $ 0 $ 0
Rental Property Management Business | Discontinued Operations, Disposed of by Sale          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Total proceeds from the sale of business $ 18,000        
Number of installment payments | payment 2        
Proceeds from the sale of business, first installment $ 15,000        
Future proceeds from the sale of business, second installment     3,000    
Long-term receivable (Note 4)     2,200    
Gain on sale of business   $ 13,700 $ 13,700