XML 143 R70.htm IDEA: XBRL DOCUMENT
v3.20.4

Goodwill - Changes in Goodwill - (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 02, 2021 | Jun. 27, 2020 | Mar. 28, 2020 | Jan. 02, 2021 | Dec. 28, 2019
Goodwill [Line Items] |  |  |  |  |
Increase from business combinations |  |  |  | $ 79,862,000 | $ 0
Goodwill [Roll Forward] |  |  |  |  |
Goodwill, beginning of period |  |  | $ 22,350,000 | 22,350,000 | 23,297,000
Increase from business combinations |  |  |  | 79,862,000 | 0
Foreign currency translation and other adjustments |  |  |  | 994,000 | (947,000)
Goodwill, end of period | $ 103,206,000 |  |  | $ 103,206,000 | $ 22,350,000
Connected Care Acquisition [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Increase from business combinations |  |  | 31,400,000 |  |
Goodwill [Roll Forward] |  |  |  |  |
Increase from business combinations |  |  | $ 31,400,000 |  |
TNI Medical AG Acquisition [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Increase from business combinations |  | $ 26,700,000 |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Increase from business combinations |  | $ 26,700,000 |  |  |
LiDCO Acquisition [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Increase from business combinations | 21,800,000 |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Increase from business combinations | $ 21,800,000 |  |  |  |

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillForeignCurrencyTranslationGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_GoodwillLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillPurchaseAccountingAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_GoodwillRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=masi_ConnectedCareAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=masi_TNIMedicalAGAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=masi_LiDCOAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |