XML 17 R88.htm IDEA: XBRL DOCUMENT
v3.19.3

Segment Information and Enterprise Reporting Long-lived assets by geographic area (Details) - USD ($) $ in Thousands | Sep. 28, 2019 | Dec. 29, 2018
--- | --- | ---
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-Lived Assets | $ 209,889 | $ 274,389
Concentration Risk, Long-lived Asset Geographic Area, Percentage | 100.00% | 100.00%
Reportable Geographical Components | United States (U.S.) |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-Lived Assets | $ 206,578 | $ 262,373
Concentration Risk, Long-lived Asset Geographic Area, Percentage | 98.40% | 95.60%
Reportable Geographical Components | International |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-Lived Assets | $ 3,311 | $ 12,016
Concentration Risk, Long-lived Asset Geographic Area, Percentage | 1.60% | 4.40%

X
- Definition Concentration Risk, Long-lived Asset Geographic Area, Percentage + References No definition available. + Details
Name: | masi_ConcentrationRiskLonglivedAssetGeographicAreaPercentage
Namespace Prefix: | masi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
Name: | us-gaap_NoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidationItemsAxis=srt_ReportableGeographicalComponentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=us-gaap_NonUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |