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Costs and Estimated Earnings on Uncompleted Contracts (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013
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Summary of costs and estimated earnings on uncompleted contracts |  |
Costs incurred on uncompleted contracts | $ 304,876 | $ 228,643
Provision for loss on uncompleted contracts | 48 | 9,896
Estimated income (loss) | (51,196) | (47,932)
Cost on uncompleted contracts, net | 253,728 | 190,607
Less: billings to date | (270,543) | (214,956)
Cost in excess of billing on uncompleted contracts, net | $ (16,815) | $ (24,349)

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