Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive Loss	Company Shares Held by DCP, at Cost	Retained Earnings	Noncontrolling Interest
Balance at beginning of period (in shares) at Dec. 31, 2021		22,767,052
Balance at beginning of period at Dec. 31, 2021	$ 651.3	$ 4.5	$ 130.6	$ (32.4)	$ (1.2)	$ 549.3	$ 0.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(0.6)					(0.1)	(0.5)
Other comprehensive income (loss)	(7.7)			(7.7)			0.0
Dividends	(11.2)		0.2			(11.4)
Share-based compensation	6.8		6.8
Issuance of common stock under incentive plan (in shares)		108,066
Issuance of common stock under incentive plan	0.0	$ 0.1	(0.1)
Withholding tax paid upon equity award vesting	(1.8)		(1.8)
Deferred compensation programs transactions, net	0.2		0.1		0.1
Share repurchases (in shares)		(251,087)
Share repurchases	(10.1)	$ (0.1)				(10.0)
Balance at end of period (in shares) at Dec. 31, 2022		22,624,031
Balance at end of period at Dec. 31, 2022	626.9	$ 4.5	135.8	(40.1)	(1.1)	527.8	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	33.7					33.5	0.2
Other comprehensive income (loss)	2.1			2.0			0.1
Dividends	(11.8)		0.1			(11.9)
Share-based compensation	4.1		4.1
Issuance of common stock under incentive plan (in shares)		116,604
Issuance of common stock under incentive plan	0.0	$ 0.0	0.0
Withholding tax paid upon equity award vesting	(1.6)		(1.6)
Deferred compensation programs transactions, net	$ 0.3		0.0		0.3
Balance at end of period (in shares) at Dec. 31, 2023	22,740,635	22,740,635
Balance at end of period at Dec. 31, 2023	$ 653.7	$ 4.5	138.4	(38.1)	(0.8)	549.4	0.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4.1					4.3	(0.2)
Other comprehensive income (loss)	(13.3)			(13.0)			(0.3)
Dividends	(11.9)		0.1			(12.0)
Share-based compensation	5.0		5.0
Issuance of common stock under incentive plan (in shares)		63,341
Issuance of common stock under incentive plan	0.1	$ 0.1	0.0
Withholding tax paid upon equity award vesting	(0.5)		(0.5)
Deferred compensation programs transactions, net	$ 0.4		(0.1)		0.5
Balance at end of period (in shares) at Dec. 31, 2024	22,803,976	22,803,976
Balance at end of period at Dec. 31, 2024	$ 637.6	$ 4.6	$ 142.9	$ (51.1)	$ (0.3)	$ 541.7	$ (0.2)