Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	AOCI Attributable to Parent
Beginning Balance at Dec. 31, 2022	$ 535.0	$ 0.6	$ 573.6	$ 1,169.9	$ (1,109.0)	$ (100.1)	[1]
Balance, shares at Dec. 31, 2022		45,572,185			17,364,635
Stock issuance, net, shares		12,328			(76)
Cash dividends - per common share	(11.7)			(11.7)
Share-based employee compensation	3.6		3.6
Net Income (Loss)	47.3			47.3
Other comprehensive income (loss)	(2.1)					(2.1)
Acquisition of treasury stock	(27.3)				$ (27.3)
Acquisition of treasury stock, shares		(367,269)			367,269
Ending Balance at Mar. 31, 2023	544.8	$ 0.6	577.2	1,205.5	$ (1,136.3)	(102.2)	[1]
Balance, shares at Mar. 31, 2023		45,217,244			17,731,828
Beginning Balance at Dec. 31, 2023	$ 591.8	$ 0.6	591.7	1,346.6	$ (1,242.4)	(104.7)	[1]
Balance, shares at Dec. 31, 2023	43,902,061	43,902,061			19,152,279
Stock issuance, net, shares		17,892
Cash dividends - per common share	$ (12.4)			(12.4)
Share-based employee compensation	3.6		3.6
Net Income (Loss)	59.9			59.9
Other comprehensive income (loss)	(0.9)					(0.9)
Acquisition of treasury stock	(15.2)				$ (15.2)
Acquisition of treasury stock, shares		(142,582)			142,582
Ending Balance at Mar. 31, 2024	$ 626.8	$ 0.6	$ 595.3	$ 1,394.1	$ (1,257.6)	$ (105.6)	[1]
Balance, shares at Mar. 31, 2024	43,777,371	43,777,371			19,294,861

[1] (1) Amounts are net of tax.