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Revenue from Contract with Customer (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, after Allowance for Credit Loss	$ 0								$ 0
Total revenues	208,302	$ 202,961	$ 200,727	$ 186,962	$ 191,543	$ 212,788	$ 212,296	$ 212,008	798,952	$ 828,635	$ 795,624
Total receivables from contracts with customers	79,704				65,622				79,704	65,622
Non-customer receivables	2,164				2,069				2,164	2,069
Accounts receivable	81,868				67,691				81,868	67,691
Artisan Funds
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	6,703				5,418				6,703	5,418
Artisan Global Funds
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	3,588				417				3,588	417
Separate Accounts [Member]
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	$ 69,413				$ 59,787				69,413	59,787
Management fees
Disaggregation of Revenue [Line Items]
Total revenues									794,338	825,679	795,276
Management fees | Artisan Funds
Disaggregation of Revenue [Line Items]
Total revenues									452,504	487,041	472,502
Management fees | Artisan Global Funds
Disaggregation of Revenue [Line Items]
Total revenues									32,332	35,007	30,107
Management fees | Separate Accounts [Member]
Disaggregation of Revenue [Line Items]
Total revenues									309,502	303,631	292,667
Performance fees
Disaggregation of Revenue [Line Items]
Total revenues									4,614	2,956	348
Performance fees | Separate Accounts [Member]
Disaggregation of Revenue [Line Items]
Total revenues									$ 4,614	$ 2,956	$ 348

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- Definition

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

+ References

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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

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Amount due from customers for fees and charges arising from transactions related to the entity's brokerage activities and operations.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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