Long Term and Other Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Schedule of outstanding debt

	Principal			Unamortized deferred financing charge			Book value, December 31, 2020
	(in millions)
Senior bank debt	$	313.3		$	(15.8	)	$	297.5
Finance lease liabilities		0.8			—			0.8
Total long-term debt outstanding		314.1			(15.8	)		298.3
Less: current portion of long-term debt		(0.6	)		—			(0.6	)
Long-term debt, excluding current portion	$	313.5		$	(15.8	)	$	297.7

	Principal			Unamortized deferred financing charge			Book value, December 31, 2019
	(in millions)
Senior bank debt	$	288.6		$	(15.5	)	$	273.1
Finance lease liabilities		0.1			—			0.1
Total long-term debt outstanding		288.7			(15.5	)	$	273.2
Less: current portion of long-term debt		(2.7	)		—			(2.7	)
Long-term debt, excluding current portion	$	286.0		$	(15.5	)	$	270.5

Schedule of maturities of long-term debt

Fiscal period:	Senior bank debt		Finance leases		Total
	(in millions)
2021	$	—	$	0.6	$	0.6
2022		—		0.2		0.2
2023		—		—		—
2024		313.3		—		313.3
Total	$	313.3	$	0.8	$	314.1