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Note 2 - Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts (Tables)

12 Months Ended

Dec. 31, 2014

Contractors [Abstract]

Unrealized Gain (Loss) on Investments [Table Text Block]

		U.S. Government				Commercial				Total
Costs incurred on uncompleted contracts		$	299,871,583			$	90,272,545			$	390,144,128

Estimated earnings			56,708,610				39,773,983				96,482,593

			356,580,193				130,046,528				486,626,721
Less billings to date			313,441,471				94,324,761				407,766,232

Costs and estimated earnings in excess of billings on uncompleted contracts		$	43,138,722			$	35,721,767			$	78,860,489

		U.S. Government				Commercial				Total

Costs incurred on uncompleted contracts		$	259,050,407			$	62,502,116			$	321,552,523

Estimated earnings			95,590,879				30,694,605				126,285,484

			354,641,286				93,196,721				447,838,007
Less billings to date			272,783,120				62,733,921				335,517,041

Costs and estimated earnings in excess of billings on uncompleted contracts		$	81,858,166			$	30,462,800			$	112,320,966

Net Unbilled and Estimated Earnings [Table Text Block]

		2014				2013

Costs and estimated earnings in excess of billings on uncompleted contracts		$	79,054,139			$	112,597,136

Billings in excess of costs and estimated earnings on uncompleted contracts			(193,650	)			(276,170	)

Totals		$	78,860,489			$	112,320,966