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Note 19 - Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts [Table Text Block]
   

Balance at Beginning of

Year

   

Reserves

Assumed in

Acquisition

   

Additions

Charged to

Earnings

   

Charges to Reserve, Net (1)

   

Balance at End

of Year

 
Year ended December 31, 2014                                        

Allowance for doubtful accounts

  $ 2,658     $ 209     $ 672     $ (1,264 )   $ 2,275  

Reserves for inventory

    6,558       2,282       2,797       (2,250 )     9,387  

Valuation of deferred tax assets

    1,021       -       364    

-

      1,385  
                                         
Year ended December 31, 2013                                        

Allowance for doubtful accounts

  $ 1,166     $ 496     $ 1,037     $ (41 )   $ 2,658  

Reserves for inventory

    6,999       1,131       72       (1,644 )     6,558  

Valuation of deferred tax assets

    806       (120 )     335    

-

      1,021  
                                         
Year ended December 31, 2012                                        

Allowance for doubtful accounts

  $ 789     $ 383     $ 204     $ (210 )   $ 1,166  

Reserves for inventory

    4,717       1,694       1,785       (1,197 )     6,999  

Valuation of deferred tax assets

    -       827       (21 )  

-

      806