Note 14 - Stock Comp Plan (Details) (USD $)	12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
Exercise Price Range 1 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, lower range limit	6.80
Exercise price range, upper range limit	59.37
Exercise Price Range 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, lower range limit	59.38
Exercise price range, upper range limit	67.60
Exercise Price Range 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, lower range limit	67.61
Exercise price range, upper range limit	75.63
Exercise Price Range 4 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, lower range limit	75.64
Exercise price range, upper range limit	80.37
Exercise Price Range 5 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, lower range limit	80.38
Exercise price range, upper range limit	98.49

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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-Name Accounting Standards Codification

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