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 Interest
Beginning balance (deficit) at Dec. 31, 2020	$ 181.4	$ 0.0	$ 261.4	$ (4.4)	$ (3.3)	$ (70.6)	$ (1.7)
Beginning balance (deficit) (in shares) at Dec. 31, 2020		23,088,386
Net income	3.9				2.3		1.6
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)		35,902
Issuance of performance stock units	0.0
Issuance of performance stock units (in shares)		81,136
Non-cash stock-based compensation	0.9		0.9
Distributions to noncontrolling interest	(0.4)						(0.4)
Ending balance (deficit) at Mar. 31, 2021	186.2		262.3	(4.0)	(1.0)	(70.6)	(0.5)
Ending balance (deficit) (in shares) at Mar. 31, 2021		23,205,424
Beginning balance (deficit) at Dec. 31, 2020	181.4	$ 0.0	261.4	(4.4)	(3.3)	(70.6)	(1.7)
Beginning balance (deficit) (in shares) at Dec. 31, 2020		23,088,386
Net income	25.9
Reclassification of de-designated interest rate collars	1.2
Ending balance (deficit) at Sep. 30, 2021	211.3		265.9	(3.2)	19.5	(70.6)	(0.3)
Ending balance (deficit) (in shares) at Sep. 30, 2021		23,222,864
Beginning balance (deficit) at Mar. 31, 2021	186.2		262.3	(4.0)	(1.0)	(70.6)	(0.5)
Beginning balance (deficit) (in shares) at Mar. 31, 2021		23,205,424
Net income	9.8				9.0		0.8
Foreign currency translation	0.1			0.1
Reclassification of de-designated interest rate collars	0.4			0.4
Issuance of stock grants	0.5		0.5
Issuance of stock grants (in shares)		13,420
Non-cash stock-based compensation	1.6		1.6
Distributions to noncontrolling interest	(0.8)						(0.8)
Ending balance (deficit) at Jun. 30, 2021	197.8		264.4	(3.5)	8.0	(70.6)	(0.5)
Ending balance (deficit) (in shares) at Jun. 30, 2021		23,218,844
Net income	12.2				11.5		0.7
Foreign currency translation	(0.1)			(0.1)
Reclassification of de-designated interest rate collars	0.4			0.4
Issuance of restricted stock units (in shares)		4,020
Non-cash stock-based compensation	1.5		1.5
Distributions to noncontrolling interest	(0.5)						(0.5)
Ending balance (deficit) at Sep. 30, 2021	211.3		265.9	(3.2)	19.5	(70.6)	(0.3)
Ending balance (deficit) (in shares) at Sep. 30, 2021		23,222,864
Beginning balance (deficit) at Dec. 31, 2021	$ 222.1		267.5	(2.8)	28.4	(70.6)	(0.4)
Beginning balance (deficit) (in shares) at Dec. 31, 2021	21,189,717	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 interest	(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		267.5	(2.8)	28.4	(70.6)	(0.4)
Beginning balance (deficit) (in shares) at Dec. 31, 2021	21,189,717	23,224,459
Net income	$ 42.7
Foreign currency translation	(0.7)
Reclassification of de-designated interest rate collars	0.5
Repurchases of common stock	(27.6)
Ending balance (deficit) at Sep. 30, 2022	$ 241.6		274.1	(3.0)	68.8	(98.2)	(0.1)
Ending balance (deficit) (in shares) at Sep. 30, 2022	20,397,787	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 interest	(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
Net income	15.1				14.3		0.8
Foreign currency translation	(0.6)			(0.6)
Non-cash stock-based compensation	2.2		2.2
Repurchases of common stock	(22.0)					(22.0)
Distributions to noncontrolling interest	(0.8)						(0.8)
Ending balance (deficit) at Sep. 30, 2022	$ 241.6		$ 274.1	$ (3.0)	$ 68.8	$ (98.2)	$ (0.1)
Ending balance (deficit) (in shares) at Sep. 30, 2022	20,397,787	23,276,329