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Note 9 - Customer Deposits	3 Months Ended
Note 9 - Customer Deposits	Mar. 31, 2012
Other Liabilities Disclosure [Text Block]	9. Customer Deposits Customer deposits at March 31, 2012, were $217,000 ($102,000 from domestic operations and $115,000 from international operations) compared to $183,000 at December 31, 2011 ($188,000 from domestic operations and $(5,000) from international operations).