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v3.19.2

Construction Backlog (Details Textual) | 3 Months Ended
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Jun. 30, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2017 USD ($) Number
Construction Backlog (Textual) |  |  |
Number of large contracts | Number |  |  | 2
Total Backlog | $ 70,768,733 |  |
Contract One [Member] |  |  |
Construction Backlog (Textual) |  |  |
Construction backlog contract amount |  |  | $ 55,000,000
Contract Two [Member] |  |  |
Construction Backlog (Textual) |  |  |
Construction backlog contract amount |  |  | $ 15,000,000
Moved Contract [Member] |  |  |
Construction Backlog (Textual) |  |  |
Construction backlog contract amount | $ 25,000,000.0 | $ 27,500,000 |

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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045 + Details
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