Future Minimum Lease Payments Under Operating and Finance Leases (Details) - USD ($) $ in Thousands	Oct. 01, 2021	Dec. 31, 2020
Operating Lease
2021 (remainder of year)	$ 2,141
2022	9,539
2023	8,241
2024	7,230
2025	6,967
Thereafter	27,090
Total minimum lease payments	61,208
Less: Interest	(12,783)
Present value of lease liabilities	48,425	$ 38,990
Finance Lease
2021 (remainder of year)	227
2022	907
2023	930
2024	954
2025	954
Thereafter	3,486
Total minimum lease payments	7,458
Less: Interest	(1,407)
Present value of lease liabilities	$ 6,051	$ 15,628