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Note 10 - Reportable Operating Segments - Financial Results for Reportable Segments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Real Estate Segment [Member] | Operating Segments [Member]        
Operating Segment Revenues        
Operating Revenues $ 211 $ 2,453 $ 323 $ 2,536
Operating Segment Income (Loss)        
Operating Income (Loss) (37) 1,285 (94) 1,063
Leasing Segment [Member] | Operating Segments [Member]        
Operating Segment Revenues        
Operating Revenues 1,422 1,409 2,837 2,721
Operating Segment Income (Loss)        
Operating Income (Loss) 811 823 1,688 1,585
Utilities Segment [Member] | Operating Segments [Member]        
Operating Segment Revenues        
Operating Revenues 807 829 1,623 1,551
Operating Segment Income (Loss)        
Operating Income (Loss) 225 257 429 406
Resort Amenities Segment [Member] | Operating Segments [Member]        
Operating Segment Revenues        
Operating Revenues 325 318 776 670
Operating Segment Income (Loss)        
Operating Income (Loss) 60 128 297 199
Operating Segments [Member]        
Operating Segment Revenues        
Operating Revenues 2,765 5,009 5,559 7,478
Operating Segment Income (Loss)        
Operating Income (Loss) 1,059 2,493 2,320 3,253
Operating Revenues 2,765 5,009 5,559 7,478
Operating Income (Loss) $ (202) $ 1,069 $ (706) $ 637