Debt - Carrying Amounts of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Unamortized discount and issuance costs	$ (3.2)	$ (2.9)
Total debt	379.6	354.0
Less: Current maturities	(16.3)	(16.3)
Total long-term debt	363.3	337.7
Line of Credit \| Senior Revolver
Debt Instrument [Line Items]
Long-term Debt	70.0	40.0
Line of Credit \| Senior Term Loan
Debt Instrument [Line Items]
Long-term Debt	$ 312.8	$ 316.9

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 of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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