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Debt (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Preferred stock, shares issued	104,574		104,574
Preferred stock, liquidation preference per share	$ 1,000		$ 1,000
Cash paid in exchange		$ 27.6
Long-term debt, carrying amount	$ 161.5		$ 161.5		$ 163.7
Gain on early extinguishment of debt	0.0	0.0	0.0	$ 33.6
Transaction costs		9.0
Write off of deferred financing cost		0.4
Long-term debt, current	$ 6.1		$ 6.1		6.1
Payment in Kind (PIK) Note [Member]
Repurchase of debt		$ 204.9
Debt instrument interest rate	8.00%		8.00%
Senior Notes [Member]
Debt instrument interest rate	8.25%		8.25%
Long-term debt, face amount	$ 74.3		$ 74.3		74.3
Long-term debt, carrying amount	$ 129.4		$ 129.4		$ 132.4

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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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Face (par) amount of debt instrument at time of issuance.

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

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

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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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