Note 3 - Other Investments (Details) - Sirona Genomics Inc [Member] - USD ($) $ in Millions	Oct. 03, 2014	Aug. 31, 2015
Note 3 - Other Investments (Details) [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	100.00%
Variable Interest Entity, Arrangements Term	2 years
Other Assets [Member]
Note 3 - Other Investments (Details) [Line Items]
Payments for Warrants	$ 0.7
Loans Receivable, Net	7.7	$ 7.7
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount		$ 12.0
Maximum [Member]
Note 3 - Other Investments (Details) [Line Items]
Variable Interest Entity, Financial or Other Support, Amount	$ 3.6

No definition available.

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The amount of payment for warrants during the period.

+ References

No definition available.

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- Definition

Period of arrangement that could require the reporting entity to provide financial support.

+ References

No definition available.

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a))

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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph b

-URI http://asc.fasb.org/extlink&oid=52262685&loc=d3e5728-111685

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-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (c)

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The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

+ References

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-Publisher FASB

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-Topic 810

-SubTopic 10

-Section 50

-Paragraph 5A

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=52262685&loc=SL6759159-111685

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 810

-SubTopic 10

-Section 50

-Paragraph 5A

-Subparagraph (d)

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