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Note 9 - Goodwill
 12 Months Ended
Dec. 31, 2017
Notes to Financial Statements  
Goodwill Disclosure [Text Block]
9.
Goodwill
 
      Americas       EMEA       Asia
Pacific		       Consolidated  
                 
Balance, December 31, 2015   $
106,797
      
154,356
      
44,527
      
305,680
  
Goodwill acquired during the year    
19,665
      
33,289
      
-
      
52,954
  
Other items    
(603
 )    
(266
 )    
-
      
(869
 )
Foreign exchange    
558
      
(10,236
 )    
(81
 )    
(9,759
 )
Balance, December 31, 2016    
126,417
      
177,143
      
44,446
      
348,006
  
Goodwill acquired during the year    
62,938
      
13,672
      
1,961
      
78,571
  
Other items    
1,175
      
-
      
-
      
1,175
  
Foreign exchange    
48
      
24,071
      
3,259
      
27,378
  
Balance, December 31, 2017    
190,578
      
214,886
      
49,666
      
455,130
  
Goodwill    
216,849
      
218,198
      
49,666
      
484,713
  
Accumulated impairment loss    
(26,271
 )    
(3,312
 )    
-
      
(29,583
 )
    $
190,578
     $
214,886
     $
49,666
     $
455,130
  
 
A test for goodwill impairment is required to be completed annually, in the Company’s case as of
August 1,
or more frequently if events or changes in circumstances indicate the asset might be impaired.
No
goodwill impairments were identified in
2017
or
2016.
The accumulated impairment loss reflects a goodwill impairment incurred in
2009.