Subsequent Event (Details) - Senior Notes Due 2020 [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term debt, interest rate (in hundredths)	6.80%	6.80%
Debt Instrument, Maturity Date		Mar. 01, 2020
Carrying amount of long term debt	$ 51.7	$ 51.7	$ 51.7
Gain (Loss) on Early Extinguishment of Debt	$ 0.7

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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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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