Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 24, 2022	Sep. 30, 2023	Sep. 24, 2022
Net sales		$ 150,804	$ 206,687	$ 499,096	$ 621,670
Cost and expenses:
Cost of sales (1)	[1]	79,909	108,621	261,638	331,495
Research and development		21,478	23,372	66,454	69,638
Selling, general and administrative		32,416	32,764	99,403	96,541
Amortization of purchased intangible assets		8,857	8,206	26,617	25,082
Restructuring charges		742	17	2,046	600
Costs and Expenses		143,402	172,980	456,158	523,356
Income from operations		7,402	33,707	42,938	98,314
Other (expense) income:
Interest expense		(773)	(1,028)	(2,628)	(2,928)
Interest income		3,207	1,132	8,657	1,551
Foreign transaction gain (loss)		(1,200)	1,344	(2,285)	3,979
Loss on extinguishment of debt		0	(80)	(369)	(312)
Income before taxes		8,636	35,075	46,313	100,604
Income tax provision		4,721	10,193	16,129	25,385
Net income		$ 3,915	$ 24,882	$ 30,184	$ 75,219
Basic (in dollars per share)		$ 0.08	$ 0.52	$ 0.64	$ 1.55
Diluted (in dollars per share)		$ 0.08	$ 0.51	$ 0.63	$ 1.53
Weighted average shares used in computing income per share:
Basic (in shares)		47,615	47,984	47,525	48,412
Diluted (in shares)		48,107	48,526	48,102	49,008

[1] Excludes amortization of $6,948 and $6,433 for the three months ended September 30, 2023 and September 24, 2022, respectively, and $20,941 and $19,673 for the nine months ended September 30, 2023 and September 24, 2022, respectively.