XML 72 R58.htm IDEA: XBRL DOCUMENT
v3.25.2

Summary of Significant Accounting Policies - Narrative (Details) shares in Millions, $ in Millions |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Oct. 24, 2024 shares | Jun. 28, 2025 USD ($) shares | Jun. 29, 2024 USD ($) shares | Jun. 28, 2025 USD ($) reportingUnit segment shares | Jun. 29, 2024 USD ($) shares
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of reporting units | reportingUnit |  |  |  | 2 |
Number of sources of product revenue | segment |  |  |  | 4 |
Advertising expense | $ |  | $ 2.0 | $ 3.2 | $ 4.4 | $ 9.3
Options to purchase of shares of common stock (in shares) |  | 0.8 | 1.4 | 0.6 | 1.4
Restricted Stock Units (RSUs) |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Share-based compensation arrangement, grants in period (in shares) |  |  |  | 0.2 |
RSUs cancelled (in shares) |  |  |  | 0.0 |
Chief Executive Officer | Restricted Stock Units (RSUs) |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Options to purchase of shares of common stock (in shares) | 2.7 |  |  |  |
Share-based compensation arrangement, grants in period (in shares) |  |  |  | 2.7 | 2.7
RSUs cancelled (in shares) | 2.7 |  |  |  |
Minimum |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Revenue remaining performance obligation, expected timing of satisfaction |  | 3 years |  | 3 years |
Warranty period for defects in material and workmanship |  |  |  | 6 months |
Maximum |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Revenue remaining performance obligation, expected timing of satisfaction |  | 6 years |  | 6 years |
Warranty period for defects in material and workmanship |  |  |  | 48 months |
Patents |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Finite lived intangible asset useful life |  |  |  | 10 years |
Trademarks |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Finite lived intangible asset useful life |  |  |  | 17 years |

X
- Definition Finite Lived Intangible Asset Useful Life Maximum + References No definition available. + Details
Name: | masi_FiniteLivedIntangibleAssetUsefulLifeMaximum
Namespace Prefix: | masi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Sources of Product Revenue + References No definition available. + Details
Name: | masi_NumberOfSourcesOfProductRevenue
Namespace Prefix: | masi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary Of Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | masi_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | masi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Warranty period for defects in material and workmanship. + References No definition available. + Details
Name: | masi_WarrantyPeriodForDefectsInMaterialAndWorkmanship
Namespace Prefix: | masi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 720 -SubTopic 35 -Name Accounting Standards Codification -Section 55 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483385/720-35-55-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 720 -SubTopic 35 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483406/720-35-50-1 + Details
Name: | us-gaap_AdvertisingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. + References No definition available. + Details
Name: | us-gaap_NumberOfReportingUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(1) -SubTopic 10 -Topic 606 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TrademarksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |