Summary of Significant Accounting Policies - Marketable Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2024	Dec. 27, 2023	Dec. 28, 2022
Investment [Line Items]
Marketable securities	$ 1,106	$ 1,281
Unrealized gain (loss) on marketable securities	1,700	2,100	$ (2,200)
Investments
Investment [Line Items]
Unrealized gain (loss) on marketable securities	100	100	$ (200)
Aggregated Cost
Investment [Line Items]
Marketable securities	1,100	1,200
Estimate of Fair Value Measurement
Investment [Line Items]
Marketable securities	$ 1,100	$ 1,300