XML 42 R31.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Compensation and Benefits (Tables)

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Components of Compensation Expense

Total compensation and benefits consist of the following:

			For the Three Months Ended March 31,
			2024						2023
Salaries, incentive compensation and benefits (1)			$	129,098					$	115,550
Long-term cash incentive compensation expense			12,503						6,984
Restricted share-based award compensation expense			8,279						8,978
Long-term incentive compensation expense			20,782						15,962
Total compensation and benefits			$	149,880					$	131,512
(1) Excluding long-term incentive compensation expense

Restricted Share-Based Award Activity

The following tables summarize the restricted share-based award activity for the three months ended March 31, 2024:

			Weighted-Average Grant Date Fair Value						Restricted Stock Awards and Restricted Stock Units
Unvested at January 1, 2024			$	38.84					5,351,492
Granted			41.96						497,053
Forfeited			43.60						(15,325)
Vested			37.58						(499,385)
Unvested at March 31, 2024			$	39.23					5,333,835

Nonvested Restricted Stock Shares Activity

			Weighted-Average Grant Date Fair Value						Performance Share Units
Unvested at January 1, 2024 (2)			$	54.89					216,170
Granted			—						—
Forfeited			—						—
Adjustment for performance results achieved (1)			45.72						3
Vested (1)			50.52						(39,981)
Unvested at March 31, 2024 (2)			$	37.86					176,192
(1) During the three months ended March 31, 2024, the 75,230 PSUs granted in 2021 met the requisite three-year performance conditions for the potential delivery of 75,233 shares (3 additional shares for results achieved). 39,981 shares of Class A Common Stock were delivered in the three months ended March 31, 2024 while the remaining 35,252 shares remain subject to the qualified retirement provision.
(2) 80,252 and 45,000 PSUs at March 31, 2024 and December 31, 2023, respectively, had met the requisite three-year performance conditions for vesting but remain outstanding subject to a qualifying retirement vesting condition.

Change in Value of Investments

The change in value of the investments had the following impact on the unaudited consolidated statements of operations:

						For the Three Months Ended March 31,
Statement of Operations Section			Statement of Operations Line Item			2024						2023
Operating expenses (benefit)			Compensation and benefits			$	3,925					$	1,732
Non-operating income (expense)			Net investment gain (loss) of nonconsolidated investment products			9,614						7,018
Non-operating income (expense)			Net investment gain (loss) of consolidated investment products			831						188

X

- Definition

Tabular disclosure of expenditures for salaries, wages, profit sharing and incentive compensation, and other employee benefits, including equity-based compensation, and pension and other postretirement benefit expense.

+ References

No definition available.

+ Details

Name:	apam_ScheduleOfLaborAndRelatedExpenseTableTextBlock
Namespace Prefix:	apam_
Data Type:	dtr-types1:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Tabular disclosure of investment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//320/tableOfContent

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Topic 321
-Publisher FASB
-URI https://asc.fasb.org//321/tableOfContent

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Topic 325
-Publisher FASB
-URI https://asc.fasb.org//325/tableOfContent

+ Details

Name:	us-gaap_InvestmentTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Subparagraph (c)
-Paragraph 2
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration