Summary of Significant Accounting Policies - (Marketable Securities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2022	Dec. 29, 2021	Dec. 30, 2020
Investment [Line Items]
Marketable securities	$ 1,746	$ 2,551
Unrealized gain (loss) on marketable securities	(2,200)	2,200	$ 1,800
Investments
Investment [Line Items]
Unrealized gain (loss) on marketable securities	(200)	100	$ (100)
Aggregated Cost
Investment [Line Items]
Marketable securities	1,900	2,500
Estimate of Fair Value Measurement
Investment [Line Items]
Marketable securities	$ 1,700	$ 2,600