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Note H - Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2015
Notes Tables  
Schedule of Goodwill [Table Text Block]
 
 
Goodwill
 
Balance at January 1, 2014
   $ 18,046  
Acquisition
     4,725  
Foreign currency
     (156
)
Balance at December 31, 2014
     22,615  
Acquisition
 
 
2,428
 
Foreign currency
 
 
(484
)
Balance at December 31, 2015
 
$
24,559
 
Schedule of Intangible Assets and Goodwill [Table Text Block]
 
 
2015
 
 
2014
 
 
 
Historical
Cost
 
 
Accumulated
Amortization
 
 
Historical
Cost
 
 
Accumulated
Amortization
 
Finite-lived intangible assets:
                                
Customer relationships
 
$
12,706
 
 
$
4,430
 
   $ 12,175     $ 3,372  
Technology & drawings
 
 
6,745
 
 
 
2,412
 
     6,620       2,035  
Other intangibles
 
 
2,406
 
 
 
1,577
 
     1,544       1,517  
Total finite-lived intangible assets
 
 
21,857
 
 
 
8,419
 
     20,339       6,924  
Goodwill
 
 
24,559
 
 
 
—
 
     22,615       —  
Trade names & trademarks
 
 
3,066
 
 
 
—
 
     3,888       —  
Total
 
$
49,482
 
 
$
8,419
 
   $ 46,842     $ 6,924