STATEMENTS OF CONSOLIDATED STOCKHOLDERS' EQUITY - USD ($) $ in Millions		Total	Common Stock	Additional Paid In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive (Loss) Income
Beginning balance at Dec. 31, 2019		$ 733.9	$ 0.2	$ 1,062.9	$ 172.8	$ (463.4)	$ (38.6)
Beginning balance (shares) at Dec. 31, 2019			15,868,304
Net (loss) income		28.8			28.8
Other comprehensive income, net of tax		19.9					19.9
Common shares issued (including impacts from Long-Term Incentive programs)		0.4		0.4
Common shares issued (including impacts from Long-Term Incentive programs) (shares)			142,173
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares		(4.3)		(4.3)
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (shares)			(45,545)
Repurchase of common stock	[1]	(12.5)				(12.5)
Repurchase of common stock (shares)	[1]		(152,763)
Cash dividends declared	[2]	(43.4)			(43.4)
Amortization of unearned equity compensation		9.6		9.6
Ending balance at Dec. 31, 2020		732.4	$ 0.2	1,068.6	158.2	(475.9)	(18.7)
Ending balance (shares) at Dec. 31, 2020			15,812,169
Net (loss) income		(18.5)			(18.5)
Other comprehensive income, net of tax		15.0					15.0
Common shares issued (including impacts from Long-Term Incentive programs)		0.3		0.3
Common shares issued (including impacts from Long-Term Incentive programs) (shares)			75,748
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares		(2.6)		(2.6)
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (shares)			(22,799)
Cash dividends declared	[2]	(46.7)			(46.7)
Amortization of unearned equity compensation		12.6		12.6
Ending balance at Dec. 31, 2021		$ 692.5	$ 0.2	1,078.9	93.0	(475.9)	(3.7)
Ending balance (shares) at Dec. 31, 2021		15,865,118	15,865,118
Net (loss) income		$ (29.6)			(29.6)
Other comprehensive income, net of tax		6.9					6.9
Common shares issued (including impacts from Long-Term Incentive programs)		0.6		0.6
Common shares issued (including impacts from Long-Term Incentive programs) (shares)			107,494
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares		(2.8)		(2.8)
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (shares)			(31,856)
Cash dividends declared	[2]	(50.1)			(50.1)
Amortization of unearned equity compensation		13.7		13.7
Ending balance at Dec. 31, 2022		$ 631.2	$ 0.2	$ 1,090.4	$ 13.3	$ (475.9)	$ 3.2
Ending balance (shares) at Dec. 31, 2022		15,940,756	15,940,756

[1] Weighted-average repurchase price (dollars per share) was $81.94 for the year ended December 31, 2020.

[2] Dividends declared per common share were $3.08, $2.88 and $2.68 during 2022, 2021 and 2020, respectively.