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Note 7 - Income Taxes (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Note 7 - Income Taxes (Details) [Line Items] |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 6,667,000 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount | $ 5,231,000 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Unrecognized Tax Benefits | 2,800,000 us-gaap_UnrecognizedTaxBenefits |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 0 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate |
Deferred Tax Assets, Net | 0 us-gaap_DeferredTaxAssetsLiabilitiesNet |
Earliest Tax Year [Member] | Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Note 7 - Income Taxes (Details) [Line Items] |  |
Open Tax Year | 2011 |
Earliest Tax Year [Member] | State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] |  |
Note 7 - Income Taxes (Details) [Line Items] |  |
Open Tax Year | 2010 |
Latest Tax Year [Member] | Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Note 7 - Income Taxes (Details) [Line Items] |  |
Open Tax Year | 2014 |
Latest Tax Year [Member] | State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] |  |
Note 7 - Income Taxes (Details) [Line Items] |  |
Open Tax Year | 2014 |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Note 7 - Income Taxes (Details) [Line Items] |  |
Operating Loss Carryforwards | 220,600,000 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember |
Open Tax Period | 3 years |
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] |  |
Note 7 - Income Taxes (Details) [Line Items] |  |
Operating Loss Carryforwards | $ 127,700,000 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CaliforniaFranchiseTaxBoardMember |
Open Tax Period | 4 years |

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- Definition The period of time that certain aspects of a business may be under review for tax purposes. + References No definition available. + Details
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + 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 Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of increase (decrease) 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=37586315&loc=d3e32123-109318 + Details
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