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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
Real estate |  | $ | 446 |
Utilities |  |  | 3,220 |
Resort amenities and other |  |  | 1,148 |
Total |  | $ | 4,814 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | Year Ended December 31, |
|  | 2018 |  |  | 2017 |
Basic and diluted |  |  | 19,091,679 |  |  |  | 18,995,274 |
Potentially dilutive |  |  | 27,500 |  |  |  | 27,500 |

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