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Interim Financial Statements (Details) (USD $)
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3 Months Ended | 6 Months Ended | 9 Months Ended | |||
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Sep. 30, 2012
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Sep. 30, 2011
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Jun. 30, 2012
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Sep. 30, 2012
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Sep. 30, 2011
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Dec. 31, 2011
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| Interim Financial Statements [Abstract] | ||||||
| Accumulated deficit | $ (152,168,164) | $ (152,168,164) | $ (126,861,042) | |||
| Net loss | (8,994,179) | (1,974,414) | (25,307,122) | (9,103,502) | ||
| Net cash used in operating activities | (17,766,015) | (9,414,425) | ||||
| Cash, cash equivalents and available-for-sale securities | 3,900,000 | 3,900,000 | ||||
| Working capital | (10,700,000) | (10,700,000) | ||||
| Ounces of gold sold during the period | 1,259 | 316 | ||||
| Ounces of silver sold during the period | 3,299 | |||||
| Revenue from sales of gold and silver | 2,500,000 | 558,574 | ||||
| Reduction to costs from sales of gold and silver | $ (115,920) | |||||