Property and Equipment - Long-lived Assets (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Long-lived assets by geographic location
Long-lived assets (property and equipment, net)	$ 38,176	$ 45,582
United States
Long-lived assets by geographic location
Long-lived assets (property and equipment, net)	31,798	38,495
United Kingdom
Long-lived assets by geographic location
Long-lived assets (property and equipment, net)	4,646	4,943
Other
Long-lived assets by geographic location
Long-lived assets (property and equipment, net)	$ 1,732	$ 2,144

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
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-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8))
-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant