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Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Dec. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Benefit Plan	Employee Benefit Plan Defined Contribution Plans The Company has established a savings plan under Section 401(k) of the Internal Revenue Code (the “401(k) Plan”). As allowed under Section 401(k) of the Internal Revenue Code, the 401(k) Plan provides tax-deferred salary contributions for eligible U.S. employees. Employee contributions are limited to a maximum annual amount as set periodically by the Internal Revenue Code. The Company made voluntary cash contributions and matched a portion of employee contributions of $2.2 million, $2.1 million and $1.7 million for 2017, 2016 and 2015, respectively. Expenses related to the 401(k) Plan were insignificant for each of the years 2017, 2016 and 2015. In connection with the Company's acquisition of Transmode during the third quarter of 2015, the Company has an ITP pension plan covering its Swedish employees. Commitments for old-age and survivors' pension for salaried employees in Sweden are vested through an insurance policy. Expenses related to the ITP pension plan were $3.3 million for 2017, $2.6 million for 2016 and $0.8 million from the Acquisition Date through December 26, 2015. The Company also provides defined contribution plans in certain foreign countries where required by local statute or at the Company's discretion.