Summary of Significant Accounting Policies - Other (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 28, 2019	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Accounting Policies [Abstract]
Reserve for inventory		inventory in excess of 12-month demand
Treasury stock reissued at lower than repurchase price		$ 0	$ 0	$ 0
Advertising expense	$ 8,400	$ 7,500	$ 7,100
Percentage of likelihood of tax benefit being realized upon effective settlement of audit		50.00%

In cases when treasury stock is reissued at a price lower than the cost to repurchase, the excess difference between the selling price and cost to repurchase is charged against retained earnings (assuming that all APIC arising from treasury stock transactions has first been exhausted).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 30
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=64906022&loc=d3e23086-112654

Reference 3: 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(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_TreasuryStockReissuedAtLowerThanRepurchasePrice
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration