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Note 1 - Organization and Summary of Significant Accounting Policies - Property and Equipment - Useful Lives (Details) | 12 Months Ended
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Dec. 31, 2016
Building [Member] |
Useful life (Year) | 39 years
Minimum [Member] | Machinery and Equipment [Member] |
Useful life (Year) | 3 years
Minimum [Member] | Furniture and Fixtures [Member] |
Useful life (Year) | 5 years
Minimum [Member] | Leasehold Improvements [Member] |
Useful life (Year) | 1 year
Maximum [Member] | Machinery and Equipment [Member] |
Useful life (Year) | 5 years
Maximum [Member] | Furniture and Fixtures [Member] |
Useful life (Year) | 7 years
Maximum [Member] | Leasehold Improvements [Member] |
Useful life (Year) | 5 years

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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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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- Details
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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: |

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- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |