Schedule of Outstanding Debt and Capital Leases (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Extinguishment of Debt [Line Items]
Senior debt	$ 309.0	$ 297.5
Finance lease liabilities	2.8	0.8
Total long-term debt outstanding	311.8	298.3
Less: current portion of long-term debt	(0.9)	(0.6)
Long-term debt, excluding current portion	310.9	297.7
Long-term Debt [Member]
Extinguishment of Debt [Line Items]
Senior debt	316.7	313.3
Unamortized deferred financing charge	(7.7)	(15.8)
Finance lease liabilities	2.8	0.8
Unamortized deferred financing charge, Finance lease liabilities
Total long-term debt outstanding	319.5	314.1
Unamortized deferred financing charge, Total long-term debt outstanding	(7.7)	(15.8)
Less: current portion of long-term debt	(0.9)	(0.6)
Unamortized deferred financing charge, Less: current portion of long-term debt
Long-term debt, excluding current portion	318.6	313.5
Unamortized deferred financing charge, Long-term debt, excluding current portion	$ (7.7)	$ (15.8)