Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Summary of Debt Refinancing Costs

The deferred finance costs of $1.2 million (December 31, 2022 – $0.6 million) related to the arrangement of the credit facility, are included within other current and non-current assets at the balance sheet dates.

(in millions)	2023			2022
Gross cost at January 1	$	1.8		$	1.8
Written off		(1.8	)		—
Capitalized in the year		1.4			—
		1.4			1.8
Accumulated amortization at January 1	$	(1.2	)	$	(0.8	)
Written off		1.4			—
Amortization in the year		(0.4	)		(0.4	)
	$	(0.2	)	$	(1.2	)
Net book value at December 31	$	1.2		$	0.6