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, 2019	$ 373.9		$ 262.6	$ (2.7)	$ 169.5	$ (55.3)	$ (0.2)
Beginning balance (deficit) (in shares) at Dec. 31, 2019		22,950,360
Net income (loss)	(172.9)				(172.8)		(0.1)
Foreign currency translation	0.1			0.1
Reclassification of de-designated interest rate collars	1.1			1.1
Change in fair value of interest rate collars	(2.9)			(2.9)
Issuance of stock grants	0.5		0.5
Issuance of stock grants (in shares)		25,066
Issuance of restricted stock units	0.0
Issuance of restricted stock units (in shares)		66,259
Issuance of performance stock units	0.0
Issuance of performance stock units (in shares)		46,701
Repurchases of common stock	(15.3)					(15.3)
Noncontrolling interest buyout	(1.7)		(1.7)
Distributions to noncontrolling interest	(1.4)						(1.4)
Ending balance (deficit) at Dec. 31, 2020	181.4		261.4	(4.4)	(3.3)	(70.6)	(1.7)
Ending balance (deficit) (in shares) at Dec. 31, 2020		23,088,386
Net income (loss)	35.3				31.7		3.6
Foreign currency translation	(0.1)			(0.1)
Reclassification of de-designated interest rate collars	1.7			1.7
Issuance of stock grants	0.5		0.5
Issuance of stock grants (in shares)		13,420
Issuance of restricted stock units	0.0
Issuance of restricted stock units (in shares)		41,517
Issuance of performance stock units	0.0
Issuance of performance stock units (in shares)		81,136
Non-cash stock-based compensation	5.6		5.6
Distributions to noncontrolling interest	(2.3)						(2.3)
Ending balance (deficit) at Dec. 31, 2021	$ 222.1		267.5	(2.8)	28.4	(70.6)	(0.4)
Ending balance (deficit) (in shares) at Dec. 31, 2021	21,189,717	23,224,459
Net income (loss)	$ 48.1				45.2		2.9
Foreign currency translation	0.5			0.5
Reclassification of de-designated interest rate collars	0.5			0.5
Issuance of stock grants	0.4		0.4
Issuance of stock grants (in shares)		14,635
Issuance of restricted stock units (in shares)		37,235
Non-cash stock-based compensation	8.6		8.6
Repurchases of common stock	(49.4)					(49.4)
Noncontrolling interest buyout	(2.3)		(2.3)
Distributions to noncontrolling interest	(2.8)						(2.8)
Ending balance (deficit) at Dec. 31, 2022	$ 225.7		$ 274.2	$ (1.8)	$ 73.6	$ (120.0)	$ (0.3)
Ending balance (deficit) (in shares) at Dec. 31, 2022	19,767,287	23,276,329