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Construction Backlog (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2017 | Dec. 31, 2016
Construction Backlog (Textual) |  |  |
Large contracts entered |  | $ 79,547,622 | $ 807,786
Contract One [Member] |  |  |
Construction Backlog (Textual) |  |  |
Large contracts entered | $ 55,000,000 |  |
Contract Two [Member] |  |  |
Construction Backlog (Textual) |  |  |
Large contracts entered | $ 15,000,000 |  |

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