Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ 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
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 208,302	$ 202,961	$ 200,727	$ 186,962	$ 191,543	$ 212,788	$ 212,296	$ 212,008	$ 798,952	$ 828,635	$ 795,624
Operating income	79,317	75,548	70,858	57,732	64,241	81,837	78,877	79,986	283,455	304,941	286,411
Net income attributable to noncontrolling interests-Artisan Partners Holdings	22,395	20,556	19,795	17,309	17,674	24,021	23,307	26,052
Comprehensive income attributable to noncontrolling interests - consolidated investment products	2,506	400	990	970	(2,021)	178	2,332	4,338	4,866	4,827	2,100
Net income attributable to Artisan Partners Asset Management Inc.	$ 44,553	$ 41,256	$ 39,188	$ 31,539	$ 32,511	$ 42,518	$ 42,006	$ 41,274	$ 156,536	$ 158,309	$ 49,599
Earnings per share	$ 0.76	$ 0.71	$ 0.66	$ 0.47	$ 0.57	$ 0.77	$ 0.72	$ 0.75	$ 2.65	$ 2.84	$ 0.75

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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