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Debt - Narrative (Details) |  |  |  | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 16, 2018 USD ($) | Oct. 13, 2017 USD ($) advance | Mar. 04, 2016 USD ($) | Jun. 29, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 29, 2019 USD ($) | Jun. 30, 2018 USD ($) | Dec. 29, 2018 | Nov. 15, 2017 USD ($) series | Oct. 12, 2017 USD ($) | Feb. 15, 2017 USD ($) | Dec. 08, 2016 EUR (€) series | Dec. 08, 2016 USD ($) series
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest paid |  |  |  | $ 3,500,000 | $ 3,700,000 | $ 11,500,000 | $ 7,700,000 |  |  |  |  |  |
Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt term |  |  | 5 years |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 700,000,000.0 |  |  |  |  |  |  |  |  |  |
Additional uncommitted borrowing capacity |  | $ 300,000,000.0 | 150,000,000.0 |  |  |  |  |  |  |  |  |  |
Additional uncommitted borrowing capacity, minimum increments |  |  | $ 25,000,000.0 |  |  |  |  |  |  |  |  |  |
Number of advances | advance |  | 2 |  |  |  |  |  |  |  |  |  |  |
Effective interest rate |  |  |  | 3.65% |  | 3.65% |  |  |  |  |  |  |
Letter of credit outstanding |  |  |  | $ 100,000 |  | $ 100,000 |  |  |  |  |  |  |
Credit Agreement | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee |  |  | 0.15% |  |  |  |  |  |  |  |  |  |
Credit Agreement | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee |  |  | 0.25% |  |  |  |  |  |  |  |  |  |
Credit Agreement | LIBOR | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.00% |  |  |  |  |  |  |  |  |  |
Credit Agreement | LIBOR | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.00% |  |  |  |  |  |  |  |  |  |
Credit Agreement | Base Rate | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 0.00% |  |  |  |  |  |  |  |  |  |
Credit Agreement | Base Rate | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.00% |  |  |  |  |  |  |  |  |  |
Credit Agreement | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  | $ 700,000,000.0 | $ 575,000,000.0 |  |  |  |  |  |  | $ 575,000,000.0 |  |  |
Remaining borrowing capacity |  |  |  | 531,100,000 |  | 531,100,000 |  |  |  |  |  |  |
Credit Agreement | Term Loan Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity, credit facility |  | 200,000,000.0 | $ 125,000,000.0 |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt | $ 75,000,000.0 | $ 125,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Quarterly payments, percentage of loan |  |  |  |  |  |  |  | 1.25% |  |  |  |  |
Periodic payment | 2,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  | $ 2,500,000 |  | $ 7,500,000 |  |  |  |  |  |  |
Euro Senior Notes, Series A and B |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt | € |  |  |  |  |  |  |  |  |  |  |  | € 212,000,000 |
Number of series | series |  |  |  |  |  |  |  |  | 2 |  |  | 2 | 2
Euro Senior Notes, Series A due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt | € |  |  |  |  |  |  |  |  |  |  |  | € 117,000,000 |
Stated interest rate |  |  |  |  |  |  |  |  |  |  |  | 1.14% | 1.14%
Euro Senior Notes, Series B due 2028 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt | € |  |  |  |  |  |  |  |  |  |  |  | € 95,000,000 |
Stated interest rate |  |  |  |  |  |  |  |  |  |  |  | 1.83% | 1.83%
U.S. Senior Notes, Series A and B |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 125,000,000
U.S. Senior Notes, Series A |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  |  |  |  | $ 25,000,000 |  |
Stated interest rate |  |  |  |  |  |  |  |  |  |  | 3.03% |  |
U.S. Senior Notes, Series B |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |
Stated interest rate |  |  |  |  |  |  |  |  |  |  | 3.74% |  |
US Senior Notes A and B Due 2025 and 2030 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  |  | $ 175,000,000 |  |  |  |
U.S. Senior Notes, Series A due 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt | $ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate | 3.48% |  |  |  |  |  |  |  |  |  |  |  |
U.S. Senior Notes, Series B due 2030 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt | $ 125,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate | 3.78% |  |  |  |  |  |  |  |  |  |  |  |

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