XML 64 R54.htm IDEA: XBRL DOCUMENT v3.23.1

Summary of Significant Accounting Policies - Property and Equipment Estimated Useful Lives (Detail)	3 Months Ended
	Apr. 01, 2023
Maximum | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Useful Lives	39 years
Maximum | Computer equipment and software
Property, Plant and Equipment [Line Items]
Useful Lives	12 years
Maximum | Demonstration units
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Maximum | Furniture and office equipment
Property, Plant and Equipment [Line Items]
Useful Lives	15 years
Maximum | Machinery, equipment and tooling
Property, Plant and Equipment [Line Items]
Useful Lives	20 years
Maximum | Transportation, vehicles and other
Property, Plant and Equipment [Line Items]
Useful Lives	20 years
Minimum | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Useful Lives	7 years
Minimum | Computer equipment and software
Property, Plant and Equipment [Line Items]
Useful Lives	2 years
Minimum | Demonstration units
Property, Plant and Equipment [Line Items]
Useful Lives	2 years
Minimum | Furniture and office equipment
Property, Plant and Equipment [Line Items]
Useful Lives	2 years
Minimum | Machinery, equipment and tooling
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Minimum | Transportation, vehicles and other
Property, Plant and Equipment [Line Items]
Useful Lives	1 year

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

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandBuildingsAndImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=masi_DemonstrationUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=masi_FurnitureandOfficeEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_TransportationEquipmentMember
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: