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Note 2 - Investments and Restricted Cash (Details) (USD $) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012
Note 2 - Investments and Restricted Cash (Details) [Line Items] |  |  |
Long-term Investments | $ 8,364,000 |  | $ 9,614,000
Tax Basis of Investments, Cost for Income Tax Purposes | 13,000,000 |  | 8,100,000
Payments to Acquire Investments | 5,738,000 | 3,261,000 |
Cost Method Investments | 1,600,000 |  |
Proceeds from Sale of Long-term Investments | 1,800,000 |  |
Restricted Investments | 5,400,000 |  | 900,000
Typhoon Exploration Inc. [Member] |  |  |
Note 2 - Investments and Restricted Cash (Details) [Line Items] |  |  |
Payments to Acquire Investments | 500,000 |  |
Equity Method Investment, Ownership Percentage | 29.40% |  |
Equity Method Investments | 800,000 |  |
Investment Owned, at Fair Value | 1,100,000 |  |
Non-Current Investments Held Having Net Gain Position [Member] |  |  |
Note 2 - Investments and Restricted Cash (Details) [Line Items] |  |  |
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax | 4,600,000 |  |
Non-Current Investments Held Having Net Loss Position [Member] |  |  |
Note 2 - Investments and Restricted Cash (Details) [Line Items] |  |  |
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax | 55,000 |  |
Aurizon Mines Ltd [Member] |  |  |
Note 2 - Investments and Restricted Cash (Details) [Line Items] |  |  |
Payments to Acquire Investments | $ 300,000 |  |

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