Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Condensed Consolidated Statements of Income (Unaudited)
Revenues	$ 203,760	$ 269,817	$ 695,413	$ 766,781
Cost of revenues	84,735	104,232	278,753	281,521
Gross profit	119,025	165,585	416,660	485,260
Operating expenses:
Research and development	79,042	84,624	254,340	245,677
Selling, general and administrative	27,766	50,738	113,363	144,398
Operating expenses	106,808	135,362	367,703	390,075
Operating income	12,217	30,223	48,957	95,185
Other income (expense):
Interest income and other, net	2,938	4,672	15,554	9,616
Interest expense	(1,359)	(1,527)	(4,611)	(4,874)
Income before income taxes	13,796	33,368	59,900	99,927
Provision for income taxes	3,388	14,188	23,479	36,871
Equity-method earnings (loss)	(60)	1,819	(1,150)	2,985
Net income	$ 10,348	$ 20,999	$ 35,271	$ 66,041
Earnings per share:
Basic (in dollars per share)	$ 0.33	$ 0.62	$ 1.11	$ 1.84
Diluted (in dollars per share)	$ 0.32	$ 0.60	$ 1.07	$ 1.79
Weighted-average common shares outstanding:
Basic (in shares)	31,796	34,079	31,789	35,935
Diluted (in shares)	32,078	34,779	32,919	36,968