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Note 6 - Income Taxes (Tables)
9 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
    Three Months Ended
September 30,
  Nine Months Ended
September 30,
    2015   2014   2015   2014
Current tax (benefit) expense   $ (39 )   $ 546     $ (8 )   $ 573  
Deferred tax expense                        
Total tax (benefit) expense   $ (39 )   $ 546     $ (8 )   $ 573  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  Nine Months Ended September 30,
    2015   2014
  Amount   %   Amount   %
Tax (benefit) expense at the U.S. federal statutory rate   $ (5,718 )     35.0 %   $ 449       35.0 %
State tax based on income, net of refunds and federal benefits     (398 )     2.4       (53 )     (4.1 )
Taxes on subsidiaries’ earnings allocated to noncontrolling interests owners     (1,326 )     8.1       (1,906 )     (148.8 )
Valuation allowance     7,438       (45.5 )     1,529       119.4  
Reduction of tax receivable                 524       40.9  
Other permanent differences     (4 )           30       2.4  
Income tax (benefit) expense   $ (8 )     %   $ 573       44.8 %