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Note 4 - Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Descriptio
n
 
Balance at
June 30,
2016
 
 
Level 1
 
 
Level 2
 
 
Level 3
 
Financial assets
                               
Deferred compensation plan
  $ 6,358     $ 5,025     $ 1,333     $ -  
                                 
Financial liabilities
                               
Contingent consideration
  $ (1,142 )   $ -     $ -     $ (1,142 )
Derivatives
    (250 )     -       (250 )     -  
Total liabilities
  $ (1,392 )   $ -     $ (250 )   $ (1,142 )
Descriptio
n
 
Balance at
December 31,
2015
 
 
Level 1
 
 
Level 2
 
 
Level 3
 
Financial assets
                               
Deferred compensation plan
  $ 6,357     $ 5,075     $ 1,282     $ -  
Derivatives
    296       -       296       -  
Total assets
  $ 6,653     $ 5,075     $ 1,578     $ -  
                                 
Financial liabilities
                               
Contingent consideration
  $ (2,974 )   $ -     $ -     $ (2,974 )