Note 3 - Costs and Estimated Earnings On Uncompleted Contracts: Schedule of Costs and Estimated Earnings on Uncompleted Contracts (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Details
Total accumulated costs and estimated earnings on uncompleted contracts	$ 31,634	$ 33,445
Less total billings on uncompleted contracts	(35,096)	(34,745)
Accumulated costs and estimated earnings on uncompleted contracts, net	(3,462)	(1,300)
Costs in Excess of Billings	3,038	2,695
Billings in excess of costs and estimated earnings on uncompleted contracts	$ (6,500)	$ (3,995)