XML 38 R27.htm IDEA: XBRL DOCUMENT v3.8.0.1
Revenue Recognition Policies (Tables)
 3 Months Ended
Mar. 31, 2018
Revenue Recognition Policies  
Schedule of Loss Contingencies by Contingency [Table Text Block]
Distributor sales accrual activity is shown below:

  
Fiscal quarters ended
  
Years Ended December 31,
 
  
March 31, 2018
  
April 1, 2017
  
2017
  
2016
 
Beginning balance
 
$
36,680
  
$
34,479
  
$
34,479
  
$
32,487
 
Sales allowances
  
24,188
   
21,520
   
89,009
   
86,896
 
Credits issued
  
(28,450
)
  
(23,471
)
  
(87,403
)
  
(85,341
)
Foreign currency
  
288
   
(576
)
  
595
   
437
 
Ending balance
 
$
32,706
  
$
31,952
  
$
36,680
  
$
34,479