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Note 5 - Costs and Estimated Earnings and Billings on Uncompleted Contracts (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Excess Billings Over Earnings [Table Text Block]

		As of December 31,
		2015				2014
Costs incurred and estimated earnings on uncompleted contracts		$	1,741,070			$	1,566,831
Billings on uncompleted contracts			(1,744,721	)			(1,559,077	)
(Excess of billings over costs incurred and estimated earnings) excess of costs incurred and estimated earnings over billings on uncompleted contracts		$	(3,651	)		$	7,754

Schedule of Net Amount of Costs and Earnings on Uncompleted Contracts [Table Text Block]

		As of December 31,
		2015				2014
Costs and estimated earnings in excess of billings on uncompleted contracts		$	26,905			$	33,403
Billings in excess of costs and estimated earnings on uncompleted contracts			(30,556	)			(25,649	)
Net amount of costs and estimated earnings on uncompleted contracts (below) above billings		$	(3,651	)		$	7,754