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Note 8 - Income Taxes (Detail) - Income before income taxes is earned in the following tax jurisdictions: (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
United States [Member] |  |  |
United States | $ 7,941,689 | $ 6,344,634 | $ 5,670,352
United Kingdom [Member] |  |  |
Income before income taxes is earned in the following tax jurisdictions | 509,426 | 476,414 | 319,290
Canada [Member] |  |  |
Income before income taxes is earned in the following tax jurisdictions | 999,609 | 945,041 | 486,981
Australia [Member] |  |  |
Income before income taxes is earned in the following tax jurisdictions | (210,372) | (131,467) |
Spain [Member] |  |  |
Income before income taxes is earned in the following tax jurisdictions | (294,707) | (93,120) |
Total [Member] |  |  |
Income before income taxes is earned in the following tax jurisdictions | $ 8,945,645 | $ 7,541,502 | $ 6,476,623

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- Definition Revenues from external customers attributed to all foreign countries in total from which the entity derives revenues. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. + 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=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 + Details
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