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Note 18 - Geographical Sales (Detail) - Schedule of sales by geographic region (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Sales | $ 66,297,498 |  | $ 43,162,026 |
China [Member] |  |  |  |
Sales | 17,148,142 | [1] | 10,320,513 | [1]
North America [Member] |  |  |  |
Sales | 30,453,771 |  | 19,140,472 |
Asia [Member] |  |  |  |
Sales | 1,840,624 | [2] | 713,683 | [2]
Europe [Member] |  |  |  |
Sales | 14,843,873 |  | 10,743,066 |
Australia [Member] |  |  |  |
Sales | 777,651 |  | 837,684 |
Hong Kong [Member] |  |  |  |
Sales | 813,482 |  | 641,604 |
Other Countries [Member] |  |  |  |
Sales | $ 419,955 |  | $ 765,004 |
[1] | excluding Hong Kong
[2] | excluding China

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + 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=6880815&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 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration