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Variable Interest Entities (VIEs) - Condensed Consolidating Schedules of Statements of Comprehensive Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Statement of Comprehensive Income [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total revenue | $ 225,181 | $ 193,692 | $ 192,933 | $ 186,302 | $ 183,201 | $ 167,621 | $ 172,636 | $ 171,167 | $ 798,108 | $ 694,625 | $ 630,111
Cost of goods sold |  |  |  |  |  |  |  |  | 263,008 | 230,826 | 220,128
Gross profit | 153,864 | 128,665 | 128,437 | 124,134 | 124,329 | 110,122 | 115,135 | 114,213 | 535,100 | 463,799 | 409,983
Operating expenses: |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  | 275,786 | 253,667 | 252,725
Research and development |  |  |  |  |  |  |  |  | 61,953 | 59,362 | 56,617
Litigation settlement, award and/or defense costs |  |  |  |  |  |  |  |  | 0 | (270,000) | (19,609)
Total operating expenses |  |  |  |  |  |  |  |  | 337,739 | 43,029 | 289,733
Operating income | 59,323 | 47,975 | 46,868 | 43,195 | 310,400 | 36,604 | 36,429 | 37,337 | 197,361 | 420,770 | 120,250
Non-operating expense |  |  |  |  |  |  |  |  | (2,013) | 2,429 | 3,905
Income before provision for income taxes |  |  |  |  |  |  |  |  | 199,374 | 418,341 | 116,345
Provision for income taxes |  |  |  |  |  |  |  |  | 67,758 | 117,675 | 34,845
Net income including noncontrolling interest |  |  |  |  |  |  |  |  | 131,616 | 300,666 | 81,500
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 0 | 0 | (1,800)
Net income | $ 367 | $ 39,235 | $ 46,680 | $ 45,334 | $ 215,293 | $ 27,773 | $ 30,023 | $ 27,577 | $ 131,616 | $ 300,666 | 83,300
Masimo Corp |  |  |  |  |  |  |  |  |  |  |
Statement of Comprehensive Income [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  |  |  | 630,111
Cost of goods sold |  |  |  |  |  |  |  |  |  |  | 226,788
Gross profit |  |  |  |  |  |  |  |  |  |  | 403,323
Operating expenses: |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  |  |  | 250,627
Research and development |  |  |  |  |  |  |  |  |  |  | 50,292
Litigation settlement, award and/or defense costs |  |  |  |  |  |  |  |  |  |  | (19,609)
Total operating expenses |  |  |  |  |  |  |  |  |  |  | 281,310
Operating income |  |  |  |  |  |  |  |  |  |  | 122,013
Non-operating expense |  |  |  |  |  |  |  |  |  |  | 3,910
Income before provision for income taxes |  |  |  |  |  |  |  |  |  |  | 118,103
Provision for income taxes |  |  |  |  |  |  |  |  |  |  | 34,803
Net income including noncontrolling interest |  |  |  |  |  |  |  |  |  |  | 83,300
Net income |  |  |  |  |  |  |  |  |  |  | 83,300
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |  |  |  |  |  |
Statement of Comprehensive Income [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  |  |  | 6,910
Cost of goods sold |  |  |  |  |  |  |  |  |  |  | 0
Gross profit |  |  |  |  |  |  |  |  |  |  | 6,910
Operating expenses: |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  |  |  | 2,348
Research and development |  |  |  |  |  |  |  |  |  |  | 6,325
Litigation settlement, award and/or defense costs |  |  |  |  |  |  |  |  |  |  | 0
Total operating expenses |  |  |  |  |  |  |  |  |  |  | 8,673
Operating income |  |  |  |  |  |  |  |  |  |  | (1,763)
Non-operating expense |  |  |  |  |  |  |  |  |  |  | (571)
Income before provision for income taxes |  |  |  |  |  |  |  |  |  |  | (1,192)
Provision for income taxes |  |  |  |  |  |  |  |  |  |  | 42
Net income including noncontrolling interest |  |  |  |  |  |  |  |  |  |  | (1,234)
Net income |  |  |  |  |  |  |  |  |  |  | (1,234)
Cercacor Elim |  |  |  |  |  |  |  |  |  |  |
Statement of Comprehensive Income [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  |  |  | (6,910)
Cost of goods sold |  |  |  |  |  |  |  |  |  |  | (6,660)
Gross profit |  |  |  |  |  |  |  |  |  |  | (250)
Operating expenses: |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  |  |  | (250)
Total operating expenses |  |  |  |  |  |  |  |  |  |  | (250)
Non-operating expense |  |  |  |  |  |  |  |  |  |  | 566
Income before provision for income taxes |  |  |  |  |  |  |  |  |  |  | (566)
Net income including noncontrolling interest |  |  |  |  |  |  |  |  |  |  | (566)
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  |  |  | (1,800)
Net income |  |  |  |  |  |  |  |  |  |  | $ 1,234

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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311 + Details
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