Other Comprehensive Income Components of and Changes in Accumulated Other Comprehensive Income, Net of Related Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 862,010
Other comprehensive income (loss)	(9,621)	$ (3,404)	$ 213
Ending Balance	887,221	862,010
Unrealized Holding (Losses) Gains on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	113	2,808	1,120
Other comprehensive income (loss)	(8,562)	(2,695)	1,688
Ending Balance	(8,449)	113	2,808
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(5,516)	(4,807)	(3,332)
Other comprehensive income (loss)	(1,059)	(709)	(1,475)
Ending Balance	(6,575)	(5,516)	(4,807)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(5,403)	(1,999)	(2,212)
Other comprehensive income (loss)	(9,621)	(3,404)	213
Ending Balance	$ (15,024)	$ (5,403)	$ (1,999)