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CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Revenues [Abstract]        
Property operating expenses from related parties $ 0 $ 8 $ 0 $ 15
General and administrative from related parties $ 47 $ 59 $ 90 $ 127