Note 20 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
State and Local Net Operating Loss Carryforwards Limited to Shorter Carryforward Periods [Member]
Deferred Tax Assets, Gross	$ 325,400		$ 325,400
Deferred Tax Assets, Valuation Allowance	1,400		$ 1,400
Earliest Tax Year [Member]
Open Tax Year			2011
Latest Tax Year [Member]
Open Tax Year			2015
Income Tax Expense (Benefit)	78,398	$ 31,117	$ 187,798	$ 80,332
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	210,746	$ 78,294	505,567	$ 216,312
Deferred Tax Assets, Operating Loss Carryforwards	136,900		136,900
Deferred Tax Assets, Operating Loss Carry-forwards, Federal And State, Subject to Gross Annual Limitation	119,600		119,600
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	17,300		17,300
Deferred Tax Assets, Other	188,500		188,500
Unrecognized Tax Benefits	$ 12,200		$ 12,200		$ 10,600