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Leases - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 30, 2018
Lessee, Lease, Description [Line Items] |  |  |  |
Fixed operating lease expenses | $ 7,700 |  |  |
Rental expense |  | $ 8,300 | $ 8,900 |
Leases renewal term (up to) | 5 years |  |  |
Leases termination period (within) | 1 year |  |  |
Operating leases, the weighted-average remaining lease term | 5 years 8 months 12 days |  |  |
Operating leases, weighted-average discount rate | 7.00% |  |  |
Operating lease right-of-use assets | $ 23,591 | 0 |  |
Total lease liabilities | 26,124 | $ 0 |  |
Operating leases obligation for previously restructured facilities | $ 6,600 |  |  |
Minimum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Leases remaining term | 1 year |  |  |
Maximum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Leases remaining term | 8 years |  |  |
Accounting Standards Update 2016-02 |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease right-of-use assets |  |  |  | $ 29,900
Total lease liabilities |  |  |  | $ 32,300

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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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