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Other Current Assets (Notes)
 3 Months Ended
Apr. 01, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Current Assets [Text Block]
Other Current Assets
Other current assets consist of the following (in thousands):
 
April 1,
2017
 
December 31,
2016
Prepaid expenses
$
13,361

 
$
13,051

Royalties receivable
7,800

 
7,500

Prepaid income taxes
1,187

 
981

Employee loans and advances
324

 
305

Due from related party
28

 
77

Other current assets
5,116

 
5,134

     Total other current assets
$
27,816

 
$
27,048