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Note 16 - Subsequent Event	3 Months Ended
Note 16 - Subsequent Event	Mar. 31, 2012
Subsequent Events [Text Block]	16. Subsequent Event On April 4, 2012, the company invested an additional $10.0 million in Shocking Technologies, Inc., a company which is further described in Note 5, Investments. This increases the company’s total investment in Shocking Technologies to $16.0 million.