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Note 3 - Income Taxes (Details) - USD ($) $ in Millions | Sep. 30, 2015 | Dec. 31, 2014
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Note 3 - Income Taxes (Details) [Line Items] |  |
Deferred Tax Liabilities, Net | $ 13.7 |
Deferred Tax Assets, Valuation Allowance | 42.0 | $ 32.0
Domestic Tax Authority [Member] |  |
Note 3 - Income Taxes (Details) [Line Items] |  |
Deferred Tax Assets, Valuation Allowance | 19.7 |
Internal Revenue Service (IRS) [Member] |  |
Note 3 - Income Taxes (Details) [Line Items] |  |
Deferred Tax Assets, Net | 112.6 |
Canada Revenue Agency [Member] |  |
Note 3 - Income Taxes (Details) [Line Items] |  |
Deferred Tax Liabilities, Net | $ 126.3 |

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