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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Jan. 02, 2016
Other Liabilities Disclosure [Abstract]    
Accrued customer rebates, fees and reimbursements $ 21,103 $ 11,857
Accrued legal fees 1,362 5,785
Accrued donations 503 5,612
Accrued arbitration award 0 5,391
Accrued taxes 5,135 5,263
Accrued stock repurchases 0 4,815
Accrued warranty 910 1,222
Accrued other 2,463 4,277
Total accrued liabilities $ 31,476 $ 44,222