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Leases - Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 27, 2020	Dec. 28, 2019
Assets
Operating lease right-of-use assets	$ 50,802	$ 54,408
Finance lease right-of-use assets	153,176	141,922
Total lease right-of-use assets	203,978	196,330
Current portion
Operating lease liabilities	6,633	7,317
Finance lease liabilities	5,958	6,486
Non-current portion
Operating lease liabilities	44,169	47,091
Finance lease liabilities	266,622	191,525
Total lease liabilities	323,382	252,419
Finance lease, accumulated amortization	$ 51,300	$ 30,800

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- Definition

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- Definition

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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-SubTopic 20
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-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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-SubTopic 20
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-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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