Leases - Gross Value of Accumulated Depreciation Of Right Of Use Assets (Details). - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 28, 2019
Finance Lease, Gross value	$ 5,525	$ 2,837
Finance Lease, Accumulated amortization	(1,136)	(306)
Finance Lease, Carrying value	$ 4,389	$ 2,531

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

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

Name:	us-gaap_FinanceLeaseRightOfUseAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant