Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Other current liabilities) (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Other current liabilities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Security deposits payable $ 7,894 $ 6,602
Accrued rent 2,548 2,160
Due to affiliates 0 1,786
Dividends payable 930 930
Miscellaneous current liabilities 5,160 11,118
Other current liabilities $ 16,532 $ 22,596