Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Numerator:
Net income attributable to controlling interests	$ 80.0	$ 85.0	$ 65.8
Denominator:
Weighted-average shares of common stock outstanding—basic (in shares)	36,191,989	37,770,185	41,493,154
Potential shares of common stock:
Weighted-average shares of common stock outstanding—diluted (in shares)	36,222,195	38,328,406	42,537,943
Earnings per share of common stock attributable to controlling interests:
Basic (in dollars per share)	$ 2.21	$ 2.25	$ 1.59
Diluted (in dollars per share)	$ 2.21	$ 2.22	$ 1.55
Restricted stock units
Potential shares of common stock:
Potential shares of common stock (in shares)	30,206	22,178	7,448
Employee stock options
Potential shares of common stock:
Potential shares of common stock (in shares)	0	536,043	1,037,341