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Employee Benefit Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 20, 2017 | Dec. 29, 2018 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Number of shares available for grant |  | 451,441 | 451,441 |  |
Share price (in dollars per share) |  | $ 81.12 | $ 81.12 |  |
Cost recognized, defined contribution plan |  |  | $ 3,705 | $ 3,327 | $ 3,005
Curtailment gain (loss) |  |  | 1,078 | $ 0 | $ 0
Pension benefits |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Future net periodic benefit cost |  | $ 65 | 65 |  |
Pension benefits | U.S. Pension |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Estimated future employer contribution, next year |  | 0 | 0 |  |
Former vice president, general counsel and secretary |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Compensation expense for arrangement with former vice president, general counsel and secretary |  |  | $ 374 |  |
Restricted stock units for non employee directors (RSUs) |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Grants in period |  |  | 2,700 | 3,000 | 5,000
Performance-based restricted stock units |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Shares received upon vesting (in shares) |  |  | 1 |  |
Award vesting period |  |  | 3 years |  |
Compensation cost not yet recognized |  | 2,164 | $ 2,164 |  |
Compensation cost not yet recognized, recognition period |  |  | 1 year 4 months 24 days |  |
Time-based restricted stock units |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Shares received upon vesting (in shares) |  |  | 1 |  |
Compensation cost not yet recognized |  | $ 2,937 | $ 2,937 |  |
Compensation cost not yet recognized, recognition period |  |  | 1 year 9 months 18 days |  |
Restricted stock unit awards |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Grants in period |  |  | 73,000 |  |
Unvested RSU's at end of year (in shares) |  | 156,000 | 156,000 | 199,000 |
Weighted average grant date fair value, granted (in dollars per share) |  |  | $ 98.12 | $ 59.30 | $ 40.41
Fair value of awards vested in period |  |  | $ 11,932 | $ 6,719 | $ 6,233
Weighted-average grant date fair value (in dollars per share) |  | $ 68.57 | $ 68.57 | $ 49.32 |
Restricted stock unit awards | Former vice president, general counsel and secretary |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Grants in period | 4,254 |  |  |  |
Weighted-average grant date fair value (in dollars per share) | $ 93.82 |  |  |  |
Compensation and options expense for arrangement with former vice president, general counsel and secretary | $ 332 |  |  |  |
Stock option awards |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Award vesting period |  |  | 3 years |  |
Award expiration period |  |  | 10 years |  |
Options exercised during the period (in shares) |  |  | 8,000 | 0 |
Employee Stock Purchase Plan Awards |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Discount to market under the ESOP |  |  | 15.00% |  |
Maximum period of restriction on resale under ESOP |  |  | 1 year |  |
Maximum participation based on compensation percentage under ESOP |  | 10.00% | 10.00% |  |
Stock issued during period under ESOP |  |  | 10,439 | 13,156 | 17,874
Other long-term liabiltiies |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Curtailment gain (loss) |  | $ 4,862 |  |  |
Other expense, net |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Curtailment gain (loss) |  | $ (1,425) |  |  |

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- Definition Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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