Note 13 - Income Taxes Summary of Income Tax Contingencies Rollforward of Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$ 119,236,000us-gaap_UnrecognizedTaxBenefits	$ 114,013,000us-gaap_UnrecognizedTaxBenefits
Tax positions related to the current year [Abstract]
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	2,352,000	2,363,000
Tax positions related to prior years [Abstract]
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	24,361,000	29,962,000
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	(1,546,000)	(3,615,000)
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(24,180,000)	(23,487,000)
Balance at end of period	120,223,000us-gaap_UnrecognizedTaxBenefits	119,236,000us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits, Net Amount Related to Prior Period Tax Positions	22,800,000
Recognition of Insurance Premium Income [Member]
Tax positions related to prior years [Abstract]
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(24,200,000)
Scenario, Forecast [Member]
Tax positions related to prior years [Abstract]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit			$ 73,600,000

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The gross amount of net increases/decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to lapses of application statute of limitation.

+ References

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- Definition

The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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

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