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Costs and Estimated Earnings on Uncompleted Contracts (Details 1) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Costs and estimated earnings amounts on uncompleted contracts included in balance sheets    
Costs and estimated earnings in excess of billings on uncompleted contracts
Billings in excess of cost and estimated earnings on uncompleted contracts (29,916) (28,024)
Cost in excess of billing on uncompleted contracts, net $ (29,916) $ (28,024)