Note 21 - Stock Based Compensation (Details) - Outstanding and Exercisable Stock Options (USD $)	12 Months Ended
Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding (in Shares)	4,855,916
Options Outstanding - Weighted-average Remaining Contractual Life	4 years 324 days
Options Outstanding - Weighted-average Exercise Price	$ 37.45
Options Exercisable - Number Outstanding (in Shares)	4,388,208
Options Exercisable - Weighted-average Remaining Contractual Life	4 years 229 days
Options Exercisable - Weighted-average Exercise Price	$ 38.31
Range 1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price - Minimum	$ 15.84
Range of Exercise Price - Maximum	$ 23.77
Options Outstanding (in Shares)	142,500
Options Outstanding - Weighted-average Remaining Contractual Life	7 years
Options Outstanding - Weighted-average Exercise Price	$ 20.94
Options Exercisable - Number Outstanding (in Shares)	42,500
Options Exercisable - Weighted-average Remaining Contractual Life	6 years 288 days
Options Exercisable - Weighted-average Exercise Price	$ 21.83
Range 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price - Minimum	$ 23.78
Range of Exercise Price - Maximum	$ 39.61
Options Outstanding (in Shares)	3,230,416
Options Outstanding - Weighted-average Remaining Contractual Life	6 years 51 days
Options Outstanding - Weighted-average Exercise Price	$ 29.61
Options Exercisable - Number Outstanding (in Shares)	2,912,708
Options Exercisable - Weighted-average Remaining Contractual Life	6 years 3 days
Options Exercisable - Weighted-average Exercise Price	$ 29.51
Range 3 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price - Minimum	$ 39.62
Range of Exercise Price - Maximum	$ 47.53
Options Outstanding (in Shares)	578,000
Options Outstanding - Weighted-average Remaining Contractual Life	2 years 321 days
Options Outstanding - Weighted-average Exercise Price	$ 42.88
Options Exercisable - Number Outstanding (in Shares)	528,000
Options Exercisable - Weighted-average Remaining Contractual Life	2 years 142 days
Options Exercisable - Weighted-average Exercise Price	$ 43.17
Range 4 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price - Minimum	$ 55.45
Range of Exercise Price - Maximum	$ 63.38
Options Outstanding (in Shares)	600,000
Options Outstanding - Weighted-average Remaining Contractual Life	1 year 237 days
Options Outstanding - Weighted-average Exercise Price	$ 60.49
Options Exercisable - Number Outstanding (in Shares)	600,000
Options Exercisable - Weighted-average Remaining Contractual Life	1 year 237 days
Options Exercisable - Weighted-average Exercise Price	$ 60.49
Range 5 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price - Minimum	$ 63.39
Range of Exercise Price - Maximum	$ 71.30
Options Outstanding (in Shares)	180,000
Options Outstanding - Weighted-average Remaining Contractual Life	1 year
Options Outstanding - Weighted-average Exercise Price	$ 68.18
Options Exercisable - Number Outstanding (in Shares)	180,000
Options Exercisable - Weighted-average Remaining Contractual Life	1 year
Options Exercisable - Weighted-average Exercise Price	$ 68.18
Range 6 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price - Minimum	$ 71.31
Range of Exercise Price - Maximum	$ 100
Options Outstanding (in Shares)	125,000
Options Outstanding - Weighted-average Remaining Contractual Life	9 months
Options Outstanding - Weighted-average Exercise Price	$ 78.89
Options Exercisable - Number Outstanding (in Shares)	125,000
Options Exercisable - Weighted-average Remaining Contractual Life	9 months
Options Exercisable - Weighted-average Exercise Price	$ 78.89

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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

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-Publisher FASB

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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-Name Accounting Standards Codification

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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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