This item represents an incentive or inducement contractually stipulated between parties to a lease whereby the lessor has committed to provide the entity (lessee) with a cash payment as inducement to enter the lease. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 55
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121577943&loc=d3e41614-112719

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 25
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=121549951&loc=d3e40019-112707

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121549951&loc=d3e40010-112707

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Name:	us-gaap_LeaseIncentivePayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Leases - Narrative (Details) - USD ($) $ in Thousands	Jun. 27, 2020	Sep. 26, 2020	Dec. 28, 2019
Lessee, Lease, Description [Line Items]
Lease concessions		$ 6,319	$ 0
Minimum
Lessee, Lease, Description [Line Items]
Lease extension term, COVID-19 related (in months)	3 months
Maximum
Lessee, Lease, Description [Line Items]
Lease extension term, COVID-19 related (in months)	12 months
Stores, laboratories, distribution centers, offices \| Minimum
Lessee, Lease, Description [Line Items]
Lease terms (in years)		5 years
Renewal terms (in years)		1 year
Stores, laboratories, distribution centers, offices \| Maximum
Lessee, Lease, Description [Line Items]
Lease terms (in years)		10 years
Renewal terms (in years)		10 years