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Note 11 - Significant Customers/Concentration (Tables)

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

		For the Three Months Ended September 30								For the Nine Months Ended September 30
		2013				2012				2013				2012
United States and Canada		$	736,958			$	1,164,634			$	2,264,368			$	4,629,240
Australia			55,093				95,186				223,483				144,100
South America			4,679				31,214				30,058				290,191
Asia			493,542				328,325				1,645,025				1,148,140
Europe			1,659,333				1,496,112				4,991,740				7,198,856
		$	2,949,605			$	3,115,471			$	9,154,674			$	13,410,527

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

		For the Three Months Ended September 30,								For the Nine Months Ended September 30,
		2013				2012				2013				2012
Ceramic diesel particulate		$	1,386,565			$	1,909,013			$	4,858,841			$	9,765,972
Liquid filters			1,440,849				1,042,101				3,679,719				3,328,719
Kiln furniture			122,191				164,357				616,114				315,836
		$	2,949,605			$	3,115,471			$	9,154,674			$	13,410,527

X

- Definition

Tabular disclosure of all significant reconciling items in the reconciliation of total revenues from reportable segments to the entity's consolidated revenues.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 31

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 30

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599

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X

- Definition

Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries.

+ 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 FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

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