Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2022	Sep. 29, 2021	Sep. 28, 2022	Sep. 29, 2021
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	$ 19	$ 19	$ 57	$ 62
Interest on lease liabilities	11	15	34	46
Operating Lease, Cost	6,902	6,819	20,571	20,796
Short-term Lease, Cost	4	7	11	17
Variable Lease, Cost	347	208	921	673
Sublease Income	(1,130)	(1,128)	(3,387)	(2,722)
Total lease cost	6,153	5,940	18,207	18,872
Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	5,969	5,811	17,709	18,191
General and Administrative Expense
Lessee, Lease, Description [Line Items]
Total lease cost	133	97	343	316
Depreciation and amortization [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	18	18	55	60
Interest Expense
Lessee, Lease, Description [Line Items]
Total lease cost	11	14	35	44
Restructuring Charges [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	22		65	261
Property Lease [Member]
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	18	18	55	60
Interest on lease liabilities	10	14	32	44
Operating Lease, Cost	6,646	6,552	19,795	19,935
Variable Lease, Cost	151	138	458	413
Sublease Income	(1,130)	(1,128)	(3,387)	(2,722)
Total lease cost	5,695	5,594	16,953	17,730
Equipment Lease
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	1	1	2	2
Interest on lease liabilities	1	1	2	2
Operating Lease, Cost	256	267	776	861
Short-term Lease, Cost	4	7	11	17
Variable Lease, Cost	196	70	463	260
Total lease cost	$ 458	$ 346	$ 1,254	$ 1,142