Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings (Accumulated Deficit)	Treasury Stock	Noncontrolling Interests
Beginning balance (deficit) at Dec. 31, 2021	$ 222.1	$ 0.0	$ 267.5	$ (2.8)	$ 28.4	$ (70.6)	$ (0.4)
Beginning balance (deficit) (in shares) at Dec. 31, 2021		23,224,459
Net income	11.3				10.7		0.6
Foreign currency translation	0.1			0.1
Reclassification of de-designated interest rate collars	0.4			0.4
Issuance of restricted stock units	0.0
Issuance of restricted stock units (in shares)		37,235
Non-cash stock-based compensation	1.8		1.8
Distributions to noncontrolling interests	(0.5)						(0.5)
Ending balance (deficit) at Mar. 31, 2022	235.2		269.3	(2.3)	39.1	(70.6)	(0.3)
Ending balance (deficit) (in shares) at Mar. 31, 2022		23,261,694
Beginning balance (deficit) at Dec. 31, 2021	222.1	$ 0.0	267.5	(2.8)	28.4	(70.6)	(0.4)
Beginning balance (deficit) (in shares) at Dec. 31, 2021		23,224,459
Net income	27.6
Foreign currency translation	(0.1)
Reclassification of de-designated interest rate collars	0.5
Ending balance (deficit) at Jun. 30, 2022	247.7		271.9	(2.4)	54.5	(76.2)	(0.1)
Ending balance (deficit) (in shares) at Jun. 30, 2022		23,276,329
Beginning balance (deficit) at Mar. 31, 2022	235.2		269.3	(2.3)	39.1	(70.6)	(0.3)
Beginning balance (deficit) (in shares) at Mar. 31, 2022		23,261,694
Net income	16.3				15.4		0.9
Foreign currency translation	(0.2)			(0.2)
Reclassification of de-designated interest rate collars	0.1			0.1
Issuance of stock grants	0.4		0.4
Issuance of stock grants (in shares)		14,635
Non-cash stock-based compensation	2.2		2.2
Repurchases of common stock	(5.6)					(5.6)
Distributions to noncontrolling interests	(0.7)						(0.7)
Ending balance (deficit) at Jun. 30, 2022	247.7		271.9	(2.4)	54.5	(76.2)	(0.1)
Ending balance (deficit) (in shares) at Jun. 30, 2022		23,276,329
Beginning balance (deficit) at Dec. 31, 2022	$ 225.7		274.2	(1.8)	73.6	(120.0)	(0.3)
Beginning balance (deficit) (in shares) at Dec. 31, 2022	19,767,287	23,276,329
Net income	$ 9.3				8.4		0.9
Foreign currency translation	0.2			0.2
Issuance of restricted stock units	(0.4)		(0.4)
Issuance of restricted stock units (in shares)		148,806
Non-cash stock-based compensation	2.2		2.2
Noncontrolling interests buyout	(0.7)		(0.7)
Repurchases of common stock	(10.5)					(10.5)
Distributions to noncontrolling interests	(0.5)						(0.5)
Ending balance (deficit) at Mar. 31, 2023	225.3		275.3	(1.6)	82.0	(130.5)	0.1
Ending balance (deficit) (in shares) at Mar. 31, 2023		23,425,135
Beginning balance (deficit) at Dec. 31, 2022	$ 225.7		274.2	(1.8)	73.6	(120.0)	(0.3)
Beginning balance (deficit) (in shares) at Dec. 31, 2022	19,767,287	23,276,329
Net income	$ 22.6
Foreign currency translation	0.7
Ending balance (deficit) at Jun. 30, 2023	$ 241.4		278.5	(1.1)	94.3	(130.5)	0.2
Ending balance (deficit) (in shares) at Jun. 30, 2023	19,649,611	23,444,353
Beginning balance (deficit) at Mar. 31, 2023	$ 225.3		275.3	(1.6)	82.0	(130.5)	0.1
Beginning balance (deficit) (in shares) at Mar. 31, 2023		23,425,135
Net income	13.3				12.3		1.0
Foreign currency translation	0.5			0.5
Issuance of stock grants	0.6		0.6
Issuance of stock grants (in shares)		18,660
Issuance of restricted stock units (in shares)		558
Non-cash stock-based compensation	2.6		2.6
Distributions to noncontrolling interests	(0.9)						(0.9)
Ending balance (deficit) at Jun. 30, 2023	$ 241.4		$ 278.5	$ (1.1)	$ 94.3	$ (130.5)	$ 0.2
Ending balance (deficit) (in shares) at Jun. 30, 2023	19,649,611	23,444,353