Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net income attributable to controlling interests	$ 11.0	$ 11.4	$ 25.6	$ 23.4
Denominator:
Weighted-average shares of common stock outstanding—basic (in shares)	37,547,741	41,484,303	38,305,631	41,464,362
Potential shares of common stock:
Weighted-average shares of common stock outstanding—diluted (in shares)	38,238,620	42,645,419	38,985,030	42,678,109
Earnings per share of common stock attributable to controlling interests:
Basic (in dollars per share)	$ 0.29	$ 0.27	$ 0.67	$ 0.56
Diluted (in dollars per share)	$ 0.29	$ 0.27	$ 0.66	$ 0.55
Restricted stock units
Potential shares of common stock:
Restricted stock units/Employee stock options (in shares)	13,613	1,695	15,481	4,617
Employee stock options
Potential shares of common stock:
Restricted stock units/Employee stock options (in shares)	677,266	1,159,421	663,918	1,209,130