Net Income Per Share (Schedule of Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Per Share Calculation [Line Items]
Net income (loss)	$ (7.8)	$ (8.5)	$ (58.9)	$ (23.3)
Preferred stock dividends, undeclared and cumulative	1.9	2.0	5.9	5.0
Net income (loss) allocable to common stockholders	$ (9.7)	$ (10.5)	$ (64.8)	$ (28.3)
Weighted average number of shares outstanding, basic	9,133	9,103	9,118	9,081
Potentially dilutive shares related to stock options	0	0	0	0
Weighted average number of shares outstanding, diluted	9,133	9,103	9,118	9,081
Net loss per share - basic and diluted	$ (1.06)	$ (1.15)	$ (7.11)	$ (3.12)
Antidilutive securities excluded from computation of earnings per share	3	13	10	60
Options with exercise price greater than market price	360	327	360	30

Options with exercise price greater than market price

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders.

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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