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Note 1 - Summary of Accounting Policies - Useful Lives of Intangible Assets (Details) | 12 Months Ended
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Jun. 30, 2017
Customer Relationships [Member] | Minimum [Member] |
Intangible assets, useful life (Year) | 5 years
Customer Relationships [Member] | Maximum [Member] |
Intangible assets, useful life (Year) | 16 years
Patents [Member] |
Intangible assets, useful life (Year) | 12 years
Patents [Member] | Maximum [Member] |
Intangible assets, useful life (Year) |
Noncompete Agreements [Member] | Minimum [Member] |
Intangible assets, useful life (Year) | 5 years
Noncompete Agreements [Member] | Maximum [Member] |
Intangible assets, useful life (Year) | 10 years
Other Intangible Assets [Member] |
Intangible assets, useful life (Year) | 10 years
Developed Technology Rights [Member] |
Intangible assets, useful life (Year) | 15 years

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
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: |

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

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_OtherIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |