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Accrued Liabilities (Tables)
 12 Months Ended
Dec. 31, 2016
Other Liabilities Disclosure [Abstract]  
Schedule of Accrued Liabilities
10. Accrued Liabilities
Accrued liabilities consist of the following (in thousands):
 
December 31,
2016
 
January 2,
2016
Accrued customer rebates, fees and reimbursements
$
21,103

 
$
11,857

Accrued taxes
5,135

 
5,263

Accrued legal fees
1,362

 
5,785

Accrued warranty
910

 
1,222

Accrued donations
503

 
5,612

Accrued arbitration award
—

 
5,391

Accrued stock repurchases
—

 
4,815

Accrued other
2,463

 
4,277

     Total accrued liabilities
$
31,476

 
$
44,222