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Note 5 - Net Amount of Costs and Estimated Earning on Uncompleted Contracts Above (Below) Billings (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Costs and estimated earnings in excess of billings on uncompleted contracts $ 26,905,000 $ 33,403,000
Billings in excess of costs and estimated earnings on uncompleted contracts (30,556,000) (25,649,000)
Net amount of costs and estimated earnings on uncompleted contracts (below) above billings $ (3,651,000) $ 7,754,000