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Stockholders' Equity Note: Summary of warrant activity (Details) (USD $)
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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|---|---|---|---|
| Details | |||
| Warrants outstanding | 19,807,876 | 16,020,366 | 11,870,116 |
| Weighted Average Exercise Price, warrants outstanding | $ 1.63 | $ 2.53 | $ 2.31 |
| Aggregate Intrinsic Value, warrants outstanding | $ 32,194,216 | $ 33,801,473 | $ 27,457,223 |
| Warrants exercisable | 15,472,876 | ||
| Weighted Average Exercise Price, warrants exercisable | $ 1.85 | ||
| Aggregate Intrinsic Value, warrants exercisable | $ 28,626,216 |