Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue:
Total revenue	$ 563.7	$ 505.6	$ 426.6
Operating expenses:
Total operating expenses	431.6	370.1	320.6
Operating income	132.1	135.5	106.0
Non-operating income and (expense):
Investment income (loss)	(0.1)	2.2	(0.1)
Interest income	3.7	3.5	6.1
Interest expense	(21.7)	(19.4)	(19.6)
Loss on extinguishment of debt	(1.4)	0.0	0.0
Total non-operating income (loss)	11.1	(9.8)	(9.5)
Income before income taxes	143.2	125.7	96.5
Income tax expense	36.6	38.9	29.4
Net income	106.6	86.8	67.1
Net income attributable to redeemable non-controlling interests in consolidated Funds	26.6	1.8	1.3
Net income attributable to controlling interests	$ 80.0	$ 85.0	$ 65.8
Earnings per share (basic) attributable to controlling interests (in dollars per share)	$ 2.21	$ 2.25	$ 1.59
Earnings per share (diluted) attributable to controlling interests (in dollars per share)	$ 2.21	$ 2.22	$ 1.55
Weighted average common stock outstanding (in shares)	36,191,989	37,770,185	41,493,154
Weighted average diluted shares outstanding (in shares)	36,222,195	38,328,406	42,537,943
Management fees
Revenue:
Total revenue	$ 517.7	$ 431.1	$ 373.2
Consolidated Entity Excluding Consolidated Funds
Operating expenses:
Compensation and benefits	313.9	265.5	217.9
General and administrative expense	92.0	85.2	82.6
Depreciation and amortization	16.6	18.5	17.3
Non-operating income and (expense):
Investment income (loss)	(0.1)	2.2	(0.1)
Interest income	3.7	3.5	6.1
Interest expense	(21.7)	(19.4)	(19.6)
Loss on extinguishment of debt	(1.4)	0.0	0.0
Net income	106.6	86.8	67.1
Consolidated Entity Excluding Consolidated Funds | Management fees
Revenue:
Total revenue	517.7	431.1	373.2
Consolidated Entity Excluding Consolidated Funds | Performance fees
Revenue:
Total revenue	31.4	71.4	50.4
Consolidated Funds
Revenue:
Total revenue	14.6	3.1	3.0
Operating expenses:
Total operating expenses	9.1	0.9	2.8
Non-operating income and (expense):
Net consolidated Funds’ investment gains	30.6	3.9	4.1
Net income attributable to redeemable non-controlling interests in consolidated Funds	$ 26.6	$ 1.8	$ 1.3