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Note 7 - Income Taxes (Details) - Summary reconciliation reported amount of income tax expense to the amount of income tax expense under federal statutory tax rates: (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Summary reconciliation reported amount of income tax expense to the amount of income tax expense under federal statutory tax rates: [Abstract]        
Tax expense (benefit) at the U.S. federal statutory rate     $ (11,614) $ 1,698
Tax expense (benefit) at the U.S. federal statutory rate     35.00% 35.00%
State franchise and income tax based on income, net of refunds and federal benefits     (437) 9
State franchise and income tax based on income, net of refunds and federal benefits     1.30% 0.20%
Taxes on subsidiaries’ and joint ventures’ earnings allocated to noncontrolling ownership interests     (342) (4,213)
Taxes on subsidiaries’ and joint ventures’ earnings allocated to noncontrolling ownership interests     1.00% (86.80%)
Non-taxable interest income     (155) (235)
Non-taxable interest income     0.50% (4.80%)
Other permanent differences     1 (251)
Other permanent differences       (5.30%)
Income tax benefit $ (9,747) $ 984 $ (12,547) $ (2,992)
Income tax benefit     37.80% (61.70%)