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Note 9 - Supplemental Information (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Customer [Member] | Accounts Receivable [Member] |  |  |  |
Note 9 - Supplemental Information (Details) [Line Items] |  |  |  |
Concentration Risk, Percentage |  |  | 10.00% | 13.00%
Customer [Member] |  |  |  |
Note 9 - Supplemental Information (Details) [Line Items] |  |  |  |
Number Of Customers | 0 | 0 | 0 | 0
Accounts Receivable [Member] |  |  |  |
Note 9 - Supplemental Information (Details) [Line Items] |  |  |  |
Number Of Customers |  |  |  | 1

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