Consolidated Statements of Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in- Capital	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjustment	Company Shares Held by Deferred Compensation Programs, at Cost	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Non-controlling Interest
Balance at beginning of period (in shares) at Dec. 31, 2018			22,513,015
Balance at beginning of period at Dec. 31, 2018	$ 585.2	$ 0.0	$ 4.5	$ 120.6	$ (33.9)	$ (0.7)	$ (1.9)	$ 495.3	$ 0.7	$ 0.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	22.2							22.3		(0.1)
Other comprehensive loss	2.8				2.8
Dividends	(10.0)			0.0				(10.0)
Stock-based compensation (in shares)			2,910
Share-based compensation	2.3			2.3
RSU vesting (in shares)			35,258
Withholding tax paid upon equity award vesting	(0.4)			(0.4)
Deferred compensation programs transactions, net	0.3			0.1			0.2
Balance at end of period (in shares) at Dec. 31, 2019			22,551,183
Balance at end of period at Dec. 31, 2019	602.4		$ 4.5	122.6	(31.8)		(1.7)	508.3		0.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	46.9							46.9
Other comprehensive loss	(1.7)				(1.7)
Dividends	(10.0)							(10.0)
Share-based compensation	5.1			5.1
Issuance of common stock under incentive plan	0.8			0.8
RSU vesting (in shares)			60,793
Change in ownership percentage of subsidiary	$ (0.8)			(0.8)
Balance at end of period (in shares) at Dec. 31, 2020	22,611,976		22,611,976
Balance at end of period at Dec. 31, 2020	$ 643.0		$ 4.5	127.8	(33.5)		(1.5)	545.2		0.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	17.9							17.8		0.1
Other comprehensive loss	1.0				1.1					(0.1)
Dividends	(10.2)			0.0				(10.2)
Share-based compensation	6.0			6.0
RSU vesting (in shares)			155,076
Withholding tax paid upon equity award vesting	(3.5)			(3.5)
Deferred compensation programs transactions, net	$ 0.6			0.3			0.3
Accounting standards update	Accounting Standards Update 2018-02 [Member]
Balance at end of period (in shares) at Dec. 31, 2021	22,767,052		22,767,052
Balance at end of period at Dec. 31, 2021	$ 654.8		$ 4.5	$ 130.6	$ (32.4)		$ (1.2)	$ 552.8		$ 0.5