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Note 12 - Segment Reporting (Details) - Segment Information (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment Reporting Information [Line Items]
Revenue	$ 6,107,318		$ 4,847,606		$ 10,492,389		$ 8,297,624
Pretax (loss)/income	140,787		1,004,518		92,020		102,132
CVD [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	4,996,004		3,764,610		8,646,167		6,456,366
Pretax (loss)/income	(230,208)		790,214		(397,096)		(125,090)
SDC [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	1,316,196		1,178,672		2,327,628		2,048,361
Pretax (loss)/income	370,995		214,304		489,116		227,222
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	$ (204,882)	[1]	$ (95,676)	[1]	$ (481,406)	[1]	$ (207,103)	[1]
[1] All elimination entries represent intersegment revenues eliminated in consolidation for external financial reporting.

X

- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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