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Note 9 - Customer Deposits	3 Months Ended
Note 9 - Customer Deposits	Jun. 30, 2011
Other Liabilities Disclosure [Text Block]	9. Customer Deposits Customer deposits at June 30, 2011, were $294,000 ($105,000 from domestic operations and $189,000 from international operations) compared to $471,000 at December 31, 2010 ($139,000 from domestic operations and $332,000 from international operations).