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Note 12 - Income Taxes (Tables)
3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]  
Summary of Income Tax Contingencies [Table Text Block]

Balance at January 1, 2015

  $ 1,593  

Increase to prior year tax positions

    11  

Increase to current year tax positions

     

Expiration of the statute of limitations for the assessment of taxes

     

Decrease related to settlements

     

Balance at March 31, 2015

  $ 1,604