Note 13 - Income Taxes Summary of Income Tax Contingencies Rollforward of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$ 120,223	$ 119,236
Tax positions related to the current year [Abstract]
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	6,461	2,352
Tax positions related to prior years [Abstract]
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	22,734	24,361
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	(2,102)	(1,546)
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(22,734)	(24,180)
Balance at end of period	124,246	$ 120,223
Unrecognized Tax Benefits, Net Amount Related to Prior Period Tax Positions	20,600
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	$ (22,700)
Scenario, Forecast [Member]
Tax positions related to prior years [Abstract]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit			$ 73,500