Restated Credit Facility Debt instruments (Notes)	6 Months Ended
Jul. 01, 2017
Debt Disclosure [Abstract]
Line of Credit	Restated Credit Facility In January 2016, the Company entered into an Amended and Restated Credit Agreement (Restated Credit Facility) with JPMorgan Chase Bank, N.A., as Administrative Agent and a Lender, Bank of America, N.A., as Syndication Agent and a Lender, Citibank, N.A., as Documentation Agent and a Lender, and various other Lenders (collectively, the Lenders). The Restated Credit Facility currently provides for up to $250.0 million in borrowings in multiple currencies, with an option, subject to certain conditions, for the Company to increase the aggregate borrowing capacity to up to $350.0 million in the future. All unpaid principal under the Restated Credit Facility will become due and payable on January 8, 2021. Borrowings under the Restated Credit Facility will be deemed, at the Company’s election, either: (i) an Alternate Base Rate (ABR) Loan, which bears interest at the ABR plus a spread (ABR Spread) based upon a Company leverage ratio, or (ii) a Eurodollar Loan, which bears interest at the Adjusted LIBO Rate (as defined below) plus a spread (Eurodollar Spread) based upon a Company leverage ratio. The ABR Spread is 0.125% to 1.00% and the Eurodollar Spread is 1.125% to 2.0%. Subject to certain conditions, the Company may also request swingline loans from time to time (Swingline Loans) that bear interest similar to an ABR Loan. The ABR is determined by taking the greatest of (i) the prime rate, (ii) the federal funds effective rate plus 0.50%, and (iii) the one-month Adjusted LIBO Rate plus 1.0%. The Adjusted LIBO Rate is equal to LIBOR for the applicable interest period multiplied by the statutory reserve rate for such period. The Company is obligated under the Restated Credit Facility to pay a fee ranging from 0.175% to 0.300% per annum, based upon a Company leverage ratio, with respect to any unused portion of the line of credit. This fee and interest on any ABR Loan are due and payable quarterly in arrears. Interest on any Eurodollar Loan is due and payable at the end of the applicable interest period (or at each three month interval in the case of loans with interest periods greater than three months). Interest on any Swingline Loan is due and payable on the date that the Swingline Loan is required to be repaid. The Company may prepay the loans and terminate the commitments in whole at any time, without premium or penalty, subject to reimbursement of certain costs in the case of Eurodollar Loans. Pursuant to the terms of the Restated Credit Facility, the Company is subject to certain covenants, including financial covenants related to a leverage ratio and an interest charge coverage ratio, and other customary negative covenants. The Company’s obligations under the Restated Credit Facility are secured by substantially all of the Company’s personal property, including certain equity interests in U.S. domestic and first-tier foreign subsidiaries. As of July 1, 2017, the Restated Credit Facility had no outstanding draws and outstanding standby letters of credit totaling $0.3 million. The Company incurred interest expense related to the Restated Credit Facility of $0.3 million and $1.2 million for the six months ended July 1, 2017 and July 2, 2016, respectively. The Company was in compliance with all covenants under the Restated Credit Facility as of July 1, 2017.

Restated Credit Facility

In January 2016, the Company entered into an Amended and Restated Credit Agreement (Restated Credit Facility) with JPMorgan Chase Bank, N.A., as Administrative Agent and a Lender, Bank of America, N.A., as Syndication Agent and a Lender, Citibank, N.A., as Documentation Agent and a Lender, and various other Lenders (collectively, the Lenders). The Restated Credit Facility currently provides for up to $250.0 million in borrowings in multiple currencies, with an option, subject to certain conditions, for the Company to increase the aggregate borrowing capacity to up to $350.0 million in the future. All unpaid principal under the Restated Credit Facility will become due and payable on January 8, 2021.

Borrowings under the Restated Credit Facility will be deemed, at the Company’s election, either: (i) an Alternate Base Rate (ABR) Loan, which bears interest at the ABR plus a spread (ABR Spread) based upon a Company leverage ratio, or (ii) a Eurodollar Loan, which bears interest at the Adjusted LIBO Rate (as defined below) plus a spread (Eurodollar Spread) based upon a Company leverage ratio. The ABR Spread is 0.125% to 1.00% and the Eurodollar Spread is 1.125% to 2.0%. Subject to certain conditions, the Company may also request swingline loans from time to time (Swingline Loans) that bear interest similar to an ABR Loan.

The ABR is determined by taking the greatest of (i) the prime rate, (ii) the federal funds effective rate plus 0.50%, and (iii) the one-month Adjusted LIBO Rate plus 1.0%. The Adjusted LIBO Rate is equal to LIBOR for the applicable interest period multiplied by the statutory reserve rate for such period.

The Company is obligated under the Restated Credit Facility to pay a fee ranging from 0.175% to 0.300% per annum, based upon a Company leverage ratio, with respect to any unused portion of the line of credit. This fee and interest on any ABR Loan are due and payable quarterly in arrears. Interest on any Eurodollar Loan is due and payable at the end of the applicable interest period (or at each three month interval in the case of loans with interest periods greater than three months). Interest on any Swingline Loan is due and payable on the date that the Swingline Loan is required to be repaid. The Company may prepay the loans and terminate the commitments in whole at any time, without premium or penalty, subject to reimbursement of certain costs in the case of Eurodollar Loans.

Pursuant to the terms of the Restated Credit Facility, the Company is subject to certain covenants, including financial covenants related to a leverage ratio and an interest charge coverage ratio, and other customary negative covenants. The Company’s obligations under the Restated Credit Facility are secured by substantially all of the Company’s personal property, including certain equity interests in U.S. domestic and first-tier foreign subsidiaries.

As of July 1, 2017, the Restated Credit Facility had no outstanding draws and outstanding standby letters of credit totaling $0.3 million. The Company incurred interest expense related to the Restated Credit Facility of $0.3 million and $1.2 million for the six months ended July 1, 2017 and July 2, 2016, respectively. The Company was in compliance with all covenants under the Restated Credit Facility as of July 1, 2017.