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Note 3 - Significant Accounting Policies (Table)
3 Months Ended
Mar. 31, 2018
Disclosure Text Block [Abstract]  
Schedule of cash and cash equivalent
    March 31, 2018   December 31, 2017
Cash and cash equivalents $ 624,450 $ 313,757
Restricted cash and cash equivalents   1,779,350   1,678,279
Total cash and cash equivalents, including restricted amounts $ 2,403,800 $ 1,992,036