CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Income Statement [Abstract]
Revenues	$ 747,937	$ 769,674	$ 693,616
Cost of revenues	451,928	446,907	405,696
Gross profit	296,009	322,767	287,920
Operating expenses:
Research and development	109,222	100,937	89,034
Selling, general and administrative	131,875	123,792	115,098
Total operating expenses	241,097	224,729	204,132
Operating income	54,912	98,038	83,788
Interest income	2,220	569	1,501
Interest expense	(579)	(602)	(864)
Other income, net	1,317	495	750
Income before income taxes	57,870	98,500	85,175
Provision for income taxes	7,132	14,576	6,652
Net income	$ 50,738	$ 83,924	$ 78,523
Net income per share:
Basic (in USD per share)	$ 0.65	$ 1.08	$ 1.02
Diluted (in USD per share)	$ 0.65	$ 1.06	$ 0.99
Weighted-average number of shares used in per share calculations:
Basic (in shares)	77,578	77,787	76,681
Diluted (in shares)	78,201	79,133	79,001

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227