XML 72 R61.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Earnings Per Share - Computation of basic and diluted net income per share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Earnings Per Share [Abstract]    
Net income attributable to APAM $ 59,481 $ 50,753
Less: Allocation to participating securities 5,464 4,952
Net income available to common stockholders $ 54,017 $ 45,801
Basic weighted average shares outstanding (in shares) 64,319,977 63,231,797
Dilutive effect of nonparticipating share-based awards (in shares) 35,270 15,366
Diluted weighted average shares outstanding (in shares) 64,355,247 63,247,163
Earnings per share - Basic (in dollars per share) $ 0.84 $ 0.72
Earnings per share - Diluted (in dollars per share) $ 0.84 $ 0.72