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OPERATING SEGMENTS (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Operating revenues              
Interest income from related parties           4,880 $ 4,237 $ 4,494
Other Income             250  
Gain on real estate land sales           7,323    
Income tax expense $ (281) $ (1,902) $ (1,631) $ (1,096) $ (25) (2,183) (1,631) (1,121)
Segment operating income           12,203 4,487 4,494
Real estate assets     22,717       22,717  
Land [Member]                
Real estate assets     22,717 22,717     22,717 22,717
Other Segments [Member]                
Interest income from related parties           4,880 4,237 4,494
Other Income             250  
Gain on real estate land sales           7,323    
Segment operating income           12,203 4,487 4,494
Segments [Member]                
Interest income from related parties           4,880 4,237 4,494
Other Income             250  
Gain on real estate land sales           7,323    
Segment operating income           $ 12,203 4,487 4,494
Real estate assets     $ 22,717 $ 22,717     $ 22,717 $ 22,717