Tax Receivable Agreement Payments

No definition available.

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Namespace Prefix:	apam_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).

+ References

+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	9 Months Ended
	Oct. 28, 2025	Sep. 30, 2025	Sep. 30, 2025	Sep. 30, 2024
Subsequent Event [Line Items]
Payments under the tax receivable agreements			$ 38,286	$ 36,659
Subsequent Event
Subsequent Event [Line Items]
Distribution made to partners, Cash distributions declared	$ 27,500
O2025Q2Dividends [Member]
Subsequent Event [Line Items]
Dividends declared (in dollars per share)		$ 0.73
O2025Q2Dividends [Member] \| Class A Common Stock \| Subsequent Event
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 0.88