Marketable Securities - Available for Sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 26, 2021
Short-term AFS securities
Amortized cost, short-term AFS securities	$ 129,120	$ 340,252
Gross unrealized gains, short-term AFS securities	0	937
Gross unrealized losses, short-term AFS securities	(3,148)	(114)
Fair value, short-term AFS securities	125,972	341,075
Long-term AFS securities
Amortized cost, long-term AFS securities	147,196	415,951
Gross unrealized gains, long-term AFS securities	0	149
Gross unrealized losses, long-term AFS securities	(8,279)	(2,720)
Fair value, long-term AFS securities	138,917	413,380
Corporate debt securities
Short-term AFS securities
Amortized cost, short-term AFS securities	52,315	107,158
Gross unrealized gains, short-term AFS securities	0	245
Gross unrealized losses, short-term AFS securities	(1,286)	(69)
Fair value, short-term AFS securities	51,029	107,334
Long-term AFS securities
Amortized cost, long-term AFS securities	115,207	242,764
Gross unrealized gains, long-term AFS securities	0	149
Gross unrealized losses, long-term AFS securities	(6,377)	(1,858)
Fair value, long-term AFS securities	108,830	241,055
U.S Treasury securities
Short-term AFS securities
Amortized cost, short-term AFS securities	45,096	148,899
Gross unrealized gains, short-term AFS securities	0	692
Gross unrealized losses, short-term AFS securities	(963)	(43)
Fair value, short-term AFS securities	44,133	149,548
Long-term AFS securities
Amortized cost, long-term AFS securities	25,990	119,695
Gross unrealized gains, long-term AFS securities	0	0
Gross unrealized losses, long-term AFS securities	(1,576)	(549)
Fair value, long-term AFS securities	24,414	119,146
U.S. governmental agency securities
Short-term AFS securities
Amortized cost, short-term AFS securities	22,806	3,500
Gross unrealized gains, short-term AFS securities	0	0
Gross unrealized losses, short-term AFS securities	(722)
Fair value, short-term AFS securities	22,084	3,500
Long-term AFS securities
Amortized cost, long-term AFS securities	5,999	39,498
Gross unrealized gains, long-term AFS securities	0	0
Gross unrealized losses, long-term AFS securities	(326)	(252)
Fair value, long-term AFS securities	5,673	39,246
Municipal securities
Short-term AFS securities
Amortized cost, short-term AFS securities	8,903	3,999
Gross unrealized gains, short-term AFS securities	0	0
Gross unrealized losses, short-term AFS securities	(177)	(2)
Fair value, short-term AFS securities	$ 8,726	3,997
Long-term AFS securities
Amortized cost, long-term AFS securities		13,994
Gross unrealized gains, long-term AFS securities		0
Gross unrealized losses, long-term AFS securities		(61)
Fair value, long-term AFS securities		13,933
Certificates of deposit
Short-term AFS securities
Amortized cost, short-term AFS securities		55,551
Gross unrealized gains, short-term AFS securities		0
Gross unrealized losses, short-term AFS securities		0
Fair value, short-term AFS securities		55,551
Commercial paper
Short-term AFS securities
Amortized cost, short-term AFS securities		21,145
Gross unrealized gains, short-term AFS securities		0
Gross unrealized losses, short-term AFS securities		0
Fair value, short-term AFS securities		$ 21,145