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Commitments and Contingencies - Additional Information (Detail) |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
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Oct. 19, 2022 appeal patent | Sep. 16, 2022 | Aug. 05, 2022 appeal patent | Apr. 21, 2021 patent | Jan. 02, 2014 USD ($) | Jul. 31, 2017 | Oct. 01, 2022 USD ($) Customer distributor executiveOfficer | Oct. 02, 2021 distributor | Oct. 01, 2022 USD ($) Customer distributor executiveOfficer | Oct. 02, 2021 distributor | Oct. 20, 2022 complaint | Jan. 01, 2022 Customer
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Severance plan participation agreements | executiveOfficer |  |  |  |  |  |  | 5 |  | 5 |  |  |
Required notice of resignation |  |  |  |  |  |  |  |  | 6 months |  |  |
Royalty obligation |  |  |  |  |  |  | $ 5,000,000 |  | $ 5,000,000 |  |  |
License fee |  |  |  |  |  |  | 2,500,000 |  | 2,500,000 |  |  |
Change in control |  |  |  |  |  |  | 15,000,000 |  | 15,000,000 |  |  |
Royalty guarantees, commitments, additional, change in control |  |  |  |  |  |  | 2,000,000 |  | 2,000,000 |  |  |
Remaining commitment |  |  |  |  |  |  | 386,800,000 |  | 386,800,000 |  |  |
Other commitment |  |  |  |  |  |  | 4,700,000 |  | 4,700,000 |  |  |
Bank balances |  |  |  |  |  |  | 219,500,000 |  | 219,500,000 |  |  |
Bank balance covered by Federal Deposit Insurance Corporation limit |  |  |  |  |  |  | $ 8,200,000 |  | $ 8,200,000 |  |  |
Percentage of revenue one customer |  |  |  |  |  |  | 8.90% | 15.00% | 10.50% | 14.60% |  |
Percentage of revenue two customer |  |  |  |  |  |  |  | 10.40% |  | 10.40% |  |
Concentration risk, AR balance one customer | Customer |  |  |  |  |  |  | 1 |  | 1 |  |  | 1
Masimo vs. Physicians Healthsource, Inc. |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  |  |  | $ 500 |  |  |  |  |  |  |
Masimo Vs. Apple Inc | Pending Litigation |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Asserted patents found valid | patent |  |  |  | 3 |  |  |  |  |  |  |  |
Asserted patents found invalid | patent |  |  |  | 9 |  |  |  |  |  |  |  |
Apple, Inc. Patent Infringement | Pending Litigation |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of appeals | appeal |  |  | 1 |  |  |  |  |  |  |  |  |
Number of asserted patents | patent |  |  | 5 |  |  |  |  |  |  |  |  |
Apple, Inc. Patent Infringement | Pending Litigation | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of appeals | appeal | 2 |  |  |  |  |  |  |  |  |  |  |
Number of asserted patents | patent | 2 |  |  |  |  |  |  |  |  |  |  |
Number of complaints | complaint |  |  |  |  |  |  |  |  |  |  | 2 |
Sales |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Distributors | distributor |  |  |  |  |  |  | 1 | 2 | 1 | 2 |  |
Accounts Receivable |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of accounts receivable balance |  |  |  |  |  |  | 12.20% |  | 12.20% |  |  | 15.70%
Sales Revenue, Product Line |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of revenue - customer concentration |  |  |  |  |  |  | 54.00% | 55.00% | 52.90% | 51.80% |  |
Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Severance payment period |  |  |  |  |  | 3 years |  |  |  |  |  |
Qualifying termination |  |  |  |  |  |  |  |  | $ 664,300,000 |  |  |
Chief Executive Officer | Cash Distribution |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Severance terms |  |  |  |  |  | 50.00% |  |  |  |  |  |
Chief Executive Officer | Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Severance terms |  |  |  |  |  | 50.00% |  |  |  |  |  |
Chief Operating Officer |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Severance payment period |  | 36 months |  |  |  |  |  |  |  |  |  |
Chief Operating Officer | Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Severance terms |  | 50.00% |  |  |  |  |  |  |  |  |  |

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