Schedule of Outstanding Debt and Capital Leases (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Extinguishment of Debt [Line Items]
Senior debt	$ 316.0	$ 297.5
Finance lease liabilities	1.9	0.8
Total long-term debt outstanding	317.9	298.3
Less: current portion of long-term debt	(0.9)	(0.6)
Long-term debt, excluding current portion	317.0	297.7
Long-term Debt [Member]
Extinguishment of Debt [Line Items]
Senior debt	324.7	313.3
Unamortized deferred financing charge	(8.7)	(15.8)
Finance lease liabilities	1.9	0.8
Unamortized deferred financing charge, Finance lease liabilities
Total long-term debt outstanding	326.6	314.1
Unamortized deferred financing charge, Total long-term debt outstanding	(8.7)	(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	325.7	313.5
Unamortized deferred financing charge, Long-term debt, excluding current portion	$ (8.7)	$ (15.8)

Sum of the carrying values as of the balance sheet date of all long-term debt, and capital lease obligations.

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Current portion of long-term debt.

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Amount of short-term and long-term debt and lease obligation.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of deferred tax liability attributable to taxable temporary differences from financing arrangements.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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