Accumulated Other Comprehensive Income - Reclassifications (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment income (loss) and interest expense	$ 5,007	$ 3,817	$ 7,054
Provision for income taxes	39,458	44,762	20,661
Net income	$ 108,849	$ 118,917	67,983
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment income (loss) and interest expense			(51)
Provision for income taxes			14
Net income			$ (37)