Equity Investments - Related Party Transactions with Investees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020	Jan. 03, 2021
Schedule of Equity Method Investments [Line Items]
Accounts receivable	$ 31,302		$ 31,302		$ 16,767
Accrued liabilities	0		0		7,996
Contract liabilities	29,033		29,033		$ 27,426
Revenues and fees received from investees for products/services	60,073	$ 47,378	160,195	$ 146,570
(Gain) loss on business divestitures, net	0	0	(224)	(10,458)
SunStrong Partners, LLC
Schedule of Equity Method Investments [Line Items]
(Gain) loss on business divestitures, net	$ 0	$ 0	$ (224)	$ 0