Condensed Consolidated Statements of Operations Condensed Consolidated Statement of Operations - USD ($) shares in Thousands	3 Months Ended
Apr. 03, 2021	Mar. 28, 2020
Income Statement [Abstract]
Product revenue	$ 299,043,000	$ 269,625,000
Cost of goods sold	102,168,000	83,996,000
Gross profit	196,875,000	185,629,000
Selling, general and administrative	96,700,000	89,877,000
Research and development	34,511,000	27,241,000
Litigation awards	0	(499,000)
Total operating expenses	131,211,000	116,619,000
Operating income	65,664,000	69,010,000
Non-operating (loss) income	(737,000)	3,346,000
Income before provision for income taxes	64,927,000	72,356,000
Provision for income taxes	11,544,000	7,900,000
Net income	$ 53,383,000	$ 64,456,000
Basic	$ 0.97	$ 1.20
Diluted	$ 0.92	$ 1.12
Basic	55,200	53,867
Diluted	57,901	57,585

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 http://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 http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227