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Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 316,574	$ 232,753	$ 912,200	$ 638,531
Total receivables from contracts with customers	111,981		111,981		$ 97,671
Non-customer receivables	10,167		10,167		2,217
Accounts receivable	122,148		122,148		99,888
Contract with customer, liability	0		0		0
Artisan Funds
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	6,041		6,041		5,227
Artisan Global Funds
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	5,416		5,416		4,473
Separate accounts and other
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	100,524		100,524		$ 87,971
Management fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	316,176	232,474	901,011	627,305
Management fees | Artisan Funds
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	186,254	131,942	528,924	356,318
Management fees | Artisan Global Funds
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	12,822	8,455	35,568	23,884
Management fees | Separate accounts and other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	117,100	92,077	336,519	247,103
Performance fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	398	279	11,189	11,226
Performance fees | Artisan Global Funds
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	14	0	14
Performance fees | Separate accounts and other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 398	$ 265	$ 11,189	$ 11,212

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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Amount due from parties in nontrade transactions, classified as other.

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