XML 88 R50.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Variable Interest Entities (VIEs) - Additional Information (Detail) |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Aug. 07, 2007 shares | Jan. 02, 2007 company | Jul. 31, 2015 USD ($) | Feb. 28, 2009 | Oct. 03, 2015 USD ($) | Sep. 27, 2014 | Jan. 02, 2016 USD ($) | Jan. 03, 2015 USD ($) | Dec. 28, 2013 USD ($) parameter | Dec. 29, 2012 | Dec. 31, 2011
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Companies with Rights to Intellectual Property | company |  | 2 |  |  |  |  |  |  |  |  |
Number of Parameters | parameter |  |  |  |  |  |  |  |  | 5 |  |
License Fees Individual |  |  |  |  |  |  |  |  | $ 500,000 |  |
License Fee Aggregate |  |  |  |  |  |  |  |  | 2,500,000 |  |
Patent and Licensing Fee - Aggregate |  |  | $ 2,400,000 |  |  |  |  |  |  |  |
Licensed Rainbow Parameters |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of royalty expense (up to) |  |  |  |  |  |  | 10.00% |  |  |  |
Handheld Products Incorporating Rainbow Technology |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of royalty expense (up to) |  |  |  |  |  |  | 10.00% |  |  |  |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Minimum aggregate royalty payments |  |  |  |  |  |  | $ 6,700,000.0 | $ 5,500,000.0 | 5,400,000.0 |  |
Increase in royalties payable in current year |  |  |  |  |  |  | 15,000,000.0 |  |  |  |
Increase in the minimum aggregate annual royalties payment after current year |  |  |  |  |  |  | 2,000,000.0 |  |  |  |
Percentage reimbursed |  |  |  | 50.00% |  |  |  |  |  | 60.00% | 50.00%
Total expenses for additional services, material and supplies |  |  |  |  |  |  | 300,000 | 3,100,000 | 4,100,000 |  |
Payment for Administrative Fees |  |  |  |  |  |  | 200,000 | 200,000 | 200,000 |  |
Minimum | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Minimum aggregate royalty payments |  |  |  |  |  |  | 5,000,000.0 |  |  |  |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage reimbursed |  |  |  |  |  | 60.00% |  |  |  |  |
Research and Development Arrangement, Contract to Perform for Others, Costs Incurred, Gross |  |  |  |  | $ 900,000 |  |  |  |  |  |
Development Partner [Member] [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  |  |  |  | 200,000 | 0 | $ 0 |  |
Two Thousand Seven Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common Stock Shares Added To Share Reserve | shares | 1,700,000.0 |  |  |  |  |  |  |  |  |  |
Engineering-related Payroll Expenses [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Research and Development Arrangement, Contract to Perform for Others, Compensation Earned |  |  |  |  |  |  |  | $ 1,600,000 |  |  |
Research and Development Arrangement, Contract to Perform for Others, Costs Incurred, Gross |  |  |  |  |  |  | $ 1,400,000 |  |  |  |

X
- Definition The adjusted minimum annual aggregate royalty expense for all licensed parameters, under certain circumstances. + References No definition available. + Details
Name: | masi_AdjustedRoyaltiesPayableLicensed
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The adjusted minimum annual aggregate royalty expense for non-licensed parameters, under certain circumstances. + References No definition available. + Details
Name: | masi_AdjustedRoyaltiesPayableNonLicensed
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase in the number of shares of common stock reserved for future issuance. + References No definition available. + Details
Name: | masi_CommonStockSharesAddedToShareReserve
Namespace Prefix: | masi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total amount of certain expenses that are reimbursed to the Variable Interest Entity. + References No definition available. + Details
Name: | masi_CostsReimbursed
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount of license fees paid for the exclusive rights to the parameter technology. + References No definition available. + Details
Name: | masi_LicenseFeeAggregate
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The individual amount of license fees paid for exclusive rights to each individual parameter technology. + References No definition available. + Details
Name: | masi_LicenseFeesIndividual
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of Companies with Rights to Intellectual Property + References No definition available. + Details
Name: | masi_NumberofCompanieswithRightstoIntellectualProperty
Namespace Prefix: | masi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition The aggregate amount related to the patent and licensing fee. + References No definition available. + Details
Name: | masi_PatentandLicensingFeeAggregate
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage rate used to determine the amount of expense related to royalty payments under a contractual arrangement such as payment for use of technology or intellectual property. + References No definition available. + Details
Name: | masi_PercentageOfRoyaltyExpense
Namespace Prefix: | masi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of certain expenses that are reimbursed to the Variable Interest Entity. + References No definition available. + Details
Name: | masi_PercentageReimbursed
Namespace Prefix: | masi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount paid to managing member or general partner, affiliate of managing member or general partner, or affiliate of limited liability company (LLC) or limited partnership (LP) for administrative services provided to the LLC or LP, for example, but not limited to, salaries, rent, or overhead costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_PaymentForAdministrativeFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of cash paid for royalties during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585 + Details
Name: | us-gaap_PaymentsForRoyalties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 + Details
Name: | us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of compensation earned (contract income) under a research and development arrangement accounted for as a contract to perform research and development for others. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23199-108380 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23221-108380 + Details
Name: | us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of costs incurred under a research and development arrangement accounted for as a contract to perform research and development for others. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23199-108380 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23221-108380 + Details
Name: | us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCostsIncurredGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ProductOrServiceAxis=masi_LicensedRainbowParametersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=masi_HandheldProductsIncorporatingRainbowTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=masi_DevelopmentPartnerMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_NatureOfExpenseAxis=masi_EngineeringrelatedPayrollExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |