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Note 1 - Summary of Accounting Policies - Useful Lives of Intangible Assets (Details)	12 Months Ended
	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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
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

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
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: