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Contingencies (Details) - USD ($) | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Contingencies (Textual) |  |
Notes receivable, outstanding | $ 906,810 | $ 979,462
Vendors [Member] |  |
Contingencies (Textual) |  |
Notes receivable, outstanding | $ 560,000 | $ 1,410,000

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