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Note 10 - Income Tax (Details) (USD $)
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12 Months Ended |
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Note 10 - Income Tax (Details) [Line Items] |
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|
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| Income Tax Expense (Benefit) |
$ 0 |
$ 0 |
$ 0 |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |
7,600,000 |
7,600,000 |
|
| Operating Loss Carryforwards |
183,900,000 |
168,400,000 |
|
| Unused Tax Credit Carryforward |
17,600,000 |
19,100,000 |
|
| Research and Development Expense |
41,884,000 |
33,221,000 |
22,001,000 |
| Canada Federal [Member] | Capital Loss Carryforward [Member] |
|
|
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| Note 10 - Income Tax (Details) [Line Items] |
|
|
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| Capital Loss Carry Forwards |
160,300,000 |
174,300,000 |
|
| Canada Federal [Member] |
|
|
|
| Note 10 - Income Tax (Details) [Line Items] |
|
|
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| Operating Loss Carryforwards |
5,500,000 |
5,700,000 |
|
| Research and Development Expense |
118,000,000 |
128,300,000 |
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| Canada Provincial [Member] | Capital Loss Carryforward [Member] |
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|
|
| Note 10 - Income Tax (Details) [Line Items] |
|
|
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| Capital Loss Carry Forwards |
160,400,000 |
174,400,000 |
|
| Canada Provincial [Member] |
|
|
|
| Note 10 - Income Tax (Details) [Line Items] |
|
|
|
| Operating Loss Carryforwards |
3,500,000 |
3,600,000 |
|
| Research and Development Expense |
51,700,000 |
56,200,000 |
|
| Research Tax Credit Carryforward [Member] |
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|
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| Note 10 - Income Tax (Details) [Line Items] |
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| Tax Credit Carryforward, Amount |
$ 500,000 |
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