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Note 16 - Supplemental information: (Detail) - The following is a summary of the Company’s amortizable intangible assets by geographic region: (USD $)	Dec. 31, 2012	Dec. 31, 2011
Amortizable intangible assets by geographic region:	$ 2,292,260	$ 3,312,020
Canada [Member]
Amortizable intangible assets by geographic region:	1,062,100	1,732,900
Germany [Member]
Amortizable intangible assets by geographic region:	$ 1,230,160	$ 1,579,120

X

- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant