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Note 13 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Income Taxes Receivable $ 2,400 $ 23,800
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 35.00%  
Deferred Tax Assets, Valuation Allowance $ 227 $ 5,360
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount (5,100)  
Deferred Tax Assets, Operating Loss Carryforwards, State and Local 1,500  
Unrecognized Tax Benefits, Period Increase (Decrease) $ 0