Leases - Maturity of Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 27, 2020	Dec. 28, 2019
Operating Leases
2020	$ 31,312
2021	79,662
2022	72,081
2023	64,351
2024	56,598
Thereafter	146,931
Total lease liabilities	450,935
Less: Interest	67,119
Present value of lease liabilities	383,816
Finance Leases
2020	3,166
2021	7,280
2022	7,215
2023	6,241
2024	4,673
Thereafter	16,460
Total lease liabilities	45,035
Less: Interest	12,442
Finance lease obligations	32,593	$ 33,296
Operating lease payments related to reasonably certain option extensions included in total lease payments	64,300
Finance lease payments related to reasonably certain option extensions included in total lease payments	1,700
Minimum lease payments for leases signed but not yet commenced excluded from lease liability	$ 13,300

Finance Lease, Liability, Payments, Due After Year Four

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Minimum Lease Payments For Leases Signed But Not Yet Commenced Excluded From Lease Liability

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Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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