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Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	$ 202,942	$ 200,727	$ 405,778	$ 387,689
Total receivables from contracts with customers	87,989		87,989		$ 79,704
Non-customer receivables	6,117		6,117		2,164
Accounts receivable	94,106		94,106		81,868
Contract with customer, liability	0		0		0
Artisan Funds
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	6,592		6,592		6,703
Artisan Global Funds
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	3,226		3,226		3,588
Separate Accounts
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	78,171		78,171		$ 69,413
Management fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	194,927	196,400	394,831	383,264
Management fees | Artisan Funds
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	109,697	112,025	224,376	218,205
Management fees | Artisan Global Funds
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	7,313	8,037	15,429	16,172
Management fees | Separate Accounts
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	77,917	76,338	155,026	148,887
Performance fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	8,015	4,327	10,947	4,425
Performance fees | Separate Accounts
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	$ 8,015	$ 4,327	$ 10,947	$ 4,425

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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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