Revenues from transactions with other operating segments of entity.

No definition available.

Name:	manh_RevenuesFromTransactionsWithOtherOperatingSegmentsOfEntity
Namespace Prefix:	manh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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+ Details

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Period Type:	duration

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
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-Section 50
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-Publisher FASB
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+ Details

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- 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

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Reportable Segments - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) Segment	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment			3
Total assets	$ 526,994		$ 526,994		$ 570,178
Warehouse Management Product Group \| Product Concentration Risk \| Sales Revenue, Net
Segment Reporting Information [Line Items]
Percentage of software license revenue	75.00%		75.00%
Americas
Segment Reporting Information [Line Items]
Americas royalty fees	$ 3,100	$ 1,900	$ 6,500	$ 4,500
Total assets	424,100		424,100
EMEA
Segment Reporting Information [Line Items]
Total assets	83,000		83,000
APAC
Segment Reporting Information [Line Items]
Total assets	$ 19,900		$ 19,900