Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Numerator:
Net income attributable to controlling interests	$ 85.0	$ 65.8	$ 100.6
Denominator:
Weighted-average shares of common stock outstanding—basic (in shares)	37,770,185	41,493,154	42,056,278
Potential shares of common stock:
Weighted-average shares of common stock outstanding—diluted (in shares)	38,328,406	42,537,943	43,156,269
Earnings per share of common stock attributable to controlling interests:
Basic (in dollars per share)	$ 2.25	$ 1.59	$ 2.39
Diluted (in dollars per share)	$ 2.22	$ 1.55	$ 2.33
Restricted stock units
Potential shares of common stock:
Potential shares of common stock (in shares)	22,178	7,448	14,147
Employee stock options
Potential shares of common stock:
Potential shares of common stock (in shares)	536,043	1,037,341	1,085,844