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Income Taxes (Schedule Of Change In Deferred Tax Assets Valuation Allowance) (Details) (USD $)
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12 Months Ended | |
|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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|
| Income Taxes [Abstract] | ||
| Balance at the beginning of year | $ 29,607,423 | $ 23,209,679 |
| Increase related to net operating loss and costs and expenses incurred in the current year | 2,588,839 | 6,154,285 |
| Change related to prior year true-ups | 66,157 | 346,442 |
| Effect of foreign exchange rate differences | (26,376) | (102,983) |
| Balance at end of year | $ 32,236,042 | $ 29,607,423 |