Note 12 - Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

2013	CVD		SDC		Eliminations *			Consolidated
Revenue	$	3,764,610	$	1,178,672	$	(95,676	)	$	4,847,606
Pretax income		790,214		214,304					1,004,518
2012
Revenue	$	6,505,330	$	976,951	$	(388,496	)	$	7,093,785
Pretax income		400,325		80,315					480,640

2013	CVD			SDC		Eliminations *			Consolidated
Revenue	$	6,456,366		$	2,048,361	$	(207,103	)	$	8,297,624
Pretax income		(125,090	)		227,222					102,132
2012
Revenue	$	12,722,329		$	2,450,893	$	(924,486	)	$	14,248,736
Pretax income		1,222,513			317,923					1,540,436