Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2022	Jun. 30, 2021	Jun. 29, 2022	Jun. 30, 2021
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	$ 19	$ 23	$ 38	$ 43
Interest on lease liabilities	11	16	24	31
Operating Lease, Cost	6,843	6,919	13,670	13,977
Short-term Lease, Cost	4	5	8	10
Variable Lease, Cost	320	236	574	465
Sublease Income	(1,129)	(798)	(2,257)	(1,594)
Total lease cost	6,068	6,401	12,057	12,932
Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	5,912	6,149	11,742	12,380
General and Administrative Expense
Lessee, Lease, Description [Line Items]
Total lease cost	105	103	210	219
Depreciation and amortization [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	18	22	37	42
Interest Expense
Lessee, Lease, Description [Line Items]
Total lease cost	11	15	24	30
Restructuring Charges [Member]
Lessee, Lease, Description [Line Items]
Total lease cost	22	112	44	261
Property Lease [Member]
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	18	22	37	42
Interest on lease liabilities	10	15	22	30
Operating Lease, Cost	6,585	6,626	13,149	13,383
Variable Lease, Cost	171	153	307	275
Sublease Income	(1,129)	(798)	(2,257)	(1,594)
Total lease cost	5,655	6,018	11,258	12,136
Equipment Lease [Member]
Lessee, Lease, Description [Line Items]
Amortization of right-to-use assets	1	1	1	1
Interest on lease liabilities	1	1	2	1
Operating Lease, Cost	258	293	521	594
Short-term Lease, Cost	4	5	8	10
Variable Lease, Cost	149	83	267	190
Total lease cost	$ 413	$ 383	$ 799	$ 796