Note 11 - Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

2017	CVD			SDC			Eliminations *			Consolidated
Revenue	$	9,403,342		$	1,779,980		$	(353,613	)	$	10,829,709
Pretax income		1,242,809			587,849						1,830,658
2016
Revenue	$	3,243,095		$	581,710		$	(81,023	)	$	3,743,782
Pretax (loss)		(758,035	)		(237,921	)					(995,956	)

2017	CVD			SDC			Eliminations *			Consolidated
Revenue	$	17,985,006		$	3,812,151		$	(1,316,831	)	$	20,480,326
Pretax income		2,348,223			1,190,601						3,538,824
2016
Revenue	$	7,335,877		$	1,505,688		$	(94,350	)	$	8,747,215
Pretax (loss)		(1,363,640	)		(173,770	)					(1,537,410	)