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Leases - Narrative (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2018 USD ($) | Dec. 28, 2019 USD ($) lease_extension | Dec. 30, 2018 USD ($) | Dec. 29, 2018 USD ($)
Sale Leaseback Transaction [Line Items] |  |  |  |
Retained earnings |  | $ 529,723 |  | $ 504,909
Right-of-use Operating / Finance Leases |  | 75,012 |  |
Operating and finance leases liability |  | $ 82,596 |  |
Manufacturing Facility |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |
Deferred gain |  |  |  | $ 5,100
Term of lease | 10 years |  |  |
Net proceeds | $ 16,900 |  |  |
Impact of Implementation of Lease Guidance |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |
Retained earnings |  |  | $ 3,000 |
Right-of-use asset and liability, net |  |  | 300 |
Right-of-use Operating / Finance Leases |  |  | 73,800 |
Operating and finance leases liability |  |  | 82,000 |
Impact of Implementation of Lease Guidance | Manufacturing Facility |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |
Deferred gain |  |  | $ 3,300 |
Real Estate |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |
Number of options to extend | lease_extension |  | 1 |  |
Minimum | Real Estate |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |
Renewal term |  | 1 year |  |
Maximum | Real Estate |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |
Renewal term |  | 10 years |  |
Leased Assets | Real Estate |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |
Concentration risk, percentage |  | 86.00% |  |
Leased Assets | Equipment |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |
Concentration risk, percentage |  | 14.00% |  |

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