Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive Loss	Company Shares Held by DCP	Retained Earnings	Noncontrolling Interest
Balance (in shares) at Dec. 31, 2023		22,740,635
Balance 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)	3.3					3.4	(0.1)
Other comprehensive income (loss)	(4.4)			(4.4)
Dividends	(2.9)		0.1			(3.0)
Share-based compensation	1.2		1.2
Issuance of common stock under incentive plan (in shares)		24,328
Withholding tax paid upon equity award vesting	(0.4)		(0.4)
Balance (in shares) at Mar. 31, 2024		22,764,963
Balance at Mar. 31, 2024	$ 650.5	$ 4.5	139.3	(42.5)	(0.8)	549.8	0.2
Balance (in shares) at Dec. 31, 2024	22,803,976	22,803,976
Balance at Dec. 31, 2024	$ 637.6	$ 4.6	142.9	(51.1)	(0.3)	541.7	(0.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	14.3					14.3
Other comprehensive income (loss)	3.1			3.0			0.1
Dividends	(2.9)		0.1			(3.0)
Share-based compensation	1.7		1.7
Issuance of common stock under incentive plan (in shares)		36,111
Withholding tax paid upon equity award vesting	$ (0.7)		(0.7)
Balance (in shares) at Mar. 31, 2025	22,840,087	22,840,087
Balance at Mar. 31, 2025	$ 653.1	$ 4.6	$ 144.0	$ (48.1)	$ (0.3)	$ 553.0	$ (0.1)