XML 105 R91.htm IDEA: XBRL DOCUMENT v3.22.2.2

Equity - Additional Information (Detail) - $ / shares	1 Months Ended			3 Months Ended		9 Months Ended
	Oct. 31, 2021	Sep. 30, 2021	Jul. 31, 2018	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021	Sep. 20, 2022	Jun. 30, 2022	Jan. 01, 2022
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)				$ 0.001		$ 0.001				$ 0.001
Repurchase of common stock (in shares)		1,300,000		0	0	3,000,000.0	500,000
Rights to Purchase Series A Junior Participating Preferred Stock
Class of Stock [Line Items]
Preferred stock purchase right declared for each share of common stock								1
Preferred stock, par value (in dollars per share)								$ 0.001
Purchase price per each right (in dollars per share)								$ 1,000
Rights to Purchase Series A Junior Participating Preferred Stock | Minimum
Class of Stock [Line Items]
Threshold percentage to exercise purchase right								10.00%
Rights to Purchase Series A Junior Participating Preferred Stock | Maximum
Class of Stock [Line Items]
Threshold percentage to exercise purchase right								20.00%
2018 Repurchase Program | Common Stock
Class of Stock [Line Items]
Number of common shares authorized to be repurchased under new stock repurchase program			5,000,000
Stock repurchase program, period			3 years
2021 Repurchase Program | Common Stock
Class of Stock [Line Items]
Number of common shares authorized to be repurchased under new stock repurchase program	3,000,000
Stock repurchase program, period	3 years
2022 Repurchase Program | Common Stock
Class of Stock [Line Items]
Number of common shares authorized to be repurchased under new stock repurchase program									5,000,000
Stock repurchase program, remaining number of shares available for repurchase (in shares)				5,000,000		5,000,000

X

- Definition

Dividends, Preferred Stock, Preferred Stock Purchase Right For Each Share

+ References

No definition available.

+ Details

Name:	masi_DividendsPreferredStockPreferredStockPurchaseRightForEachShare
Namespace Prefix:	masi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Preferred Stock, Preferred Stock Purchase Right, Purchase Price Per Right

+ References

No definition available.

+ Details

Name:	masi_PreferredStockPreferredStockPurchaseRightPurchasePricePerRight
Namespace Prefix:	masi_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Preferred Stock Purchase Right, Threshold Percentage of Purchase Right Trigger

+ References

No definition available.

+ Details

Name:	masi_PreferredStockPurchaseRightThresholdPercentageOfPurchaseRightTrigger
Namespace Prefix:	masi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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_ClassOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

+ Details

Name:	us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramPeriodInForce1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_TreasuryStockSharesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=masi_RightsToPurchaseSeriesAJuniorParticipatingPreferredStockMember
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_ShareRepurchaseProgramAxis=masi_A2018RepurchaseProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareRepurchaseProgramAxis=masi_A2021RepurchaseProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareRepurchaseProgramAxis=masi_A2022RepurchaseProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: