CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	Class A Common Stock	Total shareholders’ equity	Common Stock Class A Common Stock	Treasury Stock	Retained Earnings	Additional paid-in capital
Common stock, shares outstanding (in shares) at Dec. 31, 2023				25,756,017
Treasury stock, beginning (in shares) at Dec. 31, 2023					(2,357,328)
Balance at the beginning of the period at Dec. 31, 2023			$ 271.8	$ 0.3	$ (23.1)	$ 28.4	$ 266.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under share-based compensation plans (in shares)				527,717
Shares withheld for taxes on equity transactions (in shares)				(160,894)
Repurchase of Class A common stock (in shares)					(1,520,300)
Repurchase of Class A Common Stock			(15.5)		$ (15.5)
Net income	$ 12.6		12.6			12.6
Dividends declared			(3.5)			(3.5)
Equity based compensation			4.0				4.0
Shares withheld for taxes for equity compensation			(1.8)				(1.8)
Common stock, shares outstanding (in shares) at Sep. 30, 2024				26,122,840
Treasury stock, ending (in shares) at Sep. 30, 2024					(3,877,628)
Balance at the end of the period at Sep. 30, 2024			267.6	$ 0.3	$ (38.6)	37.5	268.4
Common stock, shares outstanding (in shares) at Jun. 30, 2024				26,087,524
Treasury stock, beginning (in shares) at Jun. 30, 2024					(3,722,428)
Balance at the beginning of the period at Jun. 30, 2024			260.5	$ 0.3	$ (36.9)	30.0	267.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under share-based compensation plans (in shares)				44,387
Shares withheld for taxes on equity transactions (in shares)				(9,071)
Repurchase of Class A common stock (in shares)					(155,200)
Repurchase of Class A Common Stock			(1.7)		$ (1.7)
Net income	$ 8.7		8.7			8.7
Dividends declared			(1.2)			(1.2)
Equity based compensation			1.4				1.4
Shares withheld for taxes for equity compensation			(0.1)				(0.1)
Common stock, shares outstanding (in shares) at Sep. 30, 2024				26,122,840
Treasury stock, ending (in shares) at Sep. 30, 2024					(3,877,628)
Balance at the end of the period at Sep. 30, 2024			267.6	$ 0.3	$ (38.6)	37.5	268.4
Common stock, shares outstanding (in shares) at Dec. 31, 2024		22,252,946		26,130,574
Treasury stock, beginning (in shares) at Dec. 31, 2024	(3,877,628)				(3,877,628)
Balance at the beginning of the period at Dec. 31, 2024			273.8	$ 0.3	$ (38.6)	42.2	269.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under share-based compensation plans (in shares)				438,846
Shares withheld for taxes on equity transactions (in shares)				(134,320)
Repurchase of Class A common stock (in shares)					(945,600)
Repurchase of Class A Common Stock			(11.6)		$ (11.6)
Net income	$ 9.1		9.1			9.1
Dividends declared			(4.1)			(4.1)
Equity based compensation			4.8				4.8
Shares withheld for taxes for equity compensation			(2.0)				(2.0)
Common stock, shares outstanding (in shares) at Sep. 30, 2025		21,611,872		26,435,100
Treasury stock, ending (in shares) at Sep. 30, 2025	(4,823,228)				(4,823,228)
Balance at the end of the period at Sep. 30, 2025			270.0	$ 0.3	$ (50.2)	47.2	272.7
Common stock, shares outstanding (in shares) at Jun. 30, 2025				26,392,290
Treasury stock, beginning (in shares) at Jun. 30, 2025					(4,155,728)
Balance at the beginning of the period at Jun. 30, 2025			276.9	$ 0.3	$ (41.9)	47.3	271.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under share-based compensation plans (in shares)				43,372
Shares withheld for taxes on equity transactions (in shares)				(562)
Repurchase of Class A common stock (in shares)					(667,500)
Repurchase of Class A Common Stock			(8.3)		$ (8.3)
Net income	$ 1.2		1.2			1.2
Dividends declared			(1.3)			(1.3)
Equity based compensation			1.6				1.6
Shares withheld for taxes for equity compensation			(0.1)				(0.1)
Common stock, shares outstanding (in shares) at Sep. 30, 2025		21,611,872		26,435,100
Treasury stock, ending (in shares) at Sep. 30, 2025	(4,823,228)				(4,823,228)
Balance at the end of the period at Sep. 30, 2025			$ 270.0	$ 0.3	$ (50.2)	$ 47.2	$ 272.7