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Note 4 - Costs and Estimated Earnings On Uncompleted Contracts: Costs and Estimated Earnings on Uncompleted Contracts (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Details    
Total accumulated costs and estimated earnings on uncompleted contracts $ 48,295fil_TotalAccumulatedCostsAndEstimatedEarningsOnUncompletedContracts $ 28,402fil_TotalAccumulatedCostsAndEstimatedEarningsOnUncompletedContracts
Less total billings on uncompleted contracts (51,772)fil_EsccTotalBillingsOnUncompletedContracts (29,369)fil_EsccTotalBillingsOnUncompletedContracts
Accumulated costs and estimated earnings on uncompleted contracts, net (3,477)fil_AccumulatedCostsAndEstimatedEarningsOnUncompletedContracts (967)fil_AccumulatedCostsAndEstimatedEarningsOnUncompletedContracts
Costs in Excess of Billings 1,699us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms 2,391us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms
Billings in excess of costs and estimated earnings on uncompleted contracts $ (5,176)us-gaap_BillingsInExcessOfCostCurrent $ (3,358)us-gaap_BillingsInExcessOfCostCurrent