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Note 1 - Organization and Summary of Significant Accounting Policies (Details) - Property and Equipment - Useful Lives | 12 Months Ended
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Dec. 31, 2014
Machinery and Equipment [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Useful life | 3 years
Machinery and Equipment [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Useful life | 5 years
Furniture and Fixtures [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Useful life | 5 years
Furniture and Fixtures [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Useful life | 7 years
Leasehold Improvements [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Useful life | 1 year
Leasehold Improvements [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Useful life | 5 years
Building [Member] |
Property, Plant and Equipment [Line Items] |
Useful life | 39 years

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |