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Note 12 - Income Taxes (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Note 12 - Income Taxes (Details) [Line Items] |  |  |
Valuation Allowance, Deferred Tax Asset, Change in Amount | $ 22.0 | $ 8.9 |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 34.00% | 34.00% | 34.00%
Internal Revenue Service (IRS) [Member] | Subject To Limitations [Member] |  |  |
Note 12 - Income Taxes (Details) [Line Items] |  |  |
Operating Loss Carryforwards | 75.0 |  |
Internal Revenue Service (IRS) [Member] | Research Tax Credit Carryforward [Member] |  |  |
Note 12 - Income Taxes (Details) [Line Items] |  |  |
Tax Credit Carryforward, Amount | 2.2 |  |
Internal Revenue Service (IRS) [Member] |  |  |
Note 12 - Income Taxes (Details) [Line Items] |  |  |
Operating Loss Carryforwards | 80.1 |  |
State and Local Jurisdiction [Member] | Subject To Limitations [Member] |  |  |
Note 12 - Income Taxes (Details) [Line Items] |  |  |
Operating Loss Carryforwards | 74.0 |  |
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member] |  |  |
Note 12 - Income Taxes (Details) [Line Items] |  |  |
Tax Credit Carryforward, Amount | 3.9 |  |
State and Local Jurisdiction [Member] |  |  |
Note 12 - Income Taxes (Details) [Line Items] |  |  |
Operating Loss Carryforwards | $ 79.1 |  |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 + Details
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- Definition The amount of the change in the period in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32123-109318 + Details
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