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Costs and Estimated Earnings on Uncompleted Contracts (Details 1) - USD ($) | Sep. 30, 2018 | Dec. 31, 2017
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Costs and estimated earnings amounts on uncompleted contracts included in balance sheets |  |
Costs and estimated earnings in excess of billings on uncompleted contracts | $ 107,689 | $ 61,175
Billings in excess of costs and estimated earnings on uncompleted contracts | (2,081,740) | (1,673,048)
Net contract assets (liabilities) | $ (1,974,051) | $ (1,611,873)

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- Definition Liability attributable to (i) billings in excess of costs under the percentage of completion contract accounting method representing the difference between contractually invoiced amounts (billings) and revenue recognized based, for example, on costs incurred to estimated total costs at period end or (ii) contractually invoiced amounts (billings) in excess of costs incurred and accumulated under the completed contract accounting method that are expected to be realized within one year or one operating cycle, whichever is longer, from the reporting date. + References No definition available. + Details
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- Definition Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings which is expected to be collected within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(c)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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