Stockholders' Equity - Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 26, 2021	Dec. 27, 2020
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 1,540,725	$ 1,328,111	$ 1,173,863
Other comprehensive (loss)/income before reclassifications, before tax	13,867
Amounts reclassified from accumulated other comprehensive loss, before tax	20,665
Income tax (benefit)/expense	9,177	9,918	31,125
Net current-period other comprehensive (loss)/income, net of tax	25,355	26,979	84,795
Ending balance	1,599,972	1,540,725	1,328,111
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	3,754
Other comprehensive (loss)/income before reclassifications, before tax	(5,759)
Amounts reclassified from accumulated other comprehensive loss, before tax	0
Income tax (benefit)/expense	(1,495)
Net current-period other comprehensive (loss)/income, net of tax	(4,264)
Ending balance	(510)	3,754
Funded Status of Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(385,680)
Other comprehensive (loss)/income before reclassifications, before tax	29,301
Amounts reclassified from accumulated other comprehensive loss, before tax	20,665
Income tax (benefit)/expense	13,233
Net current-period other comprehensive (loss)/income, net of tax	36,733
Ending balance	(348,947)	(385,680)
Net Unrealized Gain on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(1,276)
Other comprehensive (loss)/income before reclassifications, before tax	(9,675)
Amounts reclassified from accumulated other comprehensive loss, before tax	0
Income tax (benefit)/expense	(2,561)
Net current-period other comprehensive (loss)/income, net of tax	(7,114)
Ending balance	(8,390)	(1,276)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(383,202)	(410,181)	(494,976)
Net current-period other comprehensive (loss)/income, net of tax	25,355	26,979	84,795
Ending balance	$ (357,847)	$ (383,202)	$ (410,181)