Stockholder's Equity - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Subsidiary, Sale of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period (in shares)	35,464		398,936
Shares Forfeited			999
Shares accelerated for board of director exit	7,404		7,404
Allocated share-based compensation expense	$ 0.8	$ 0.6	$ 2.2	$ 2.5
Business exit costs				0.7
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized	$ 5.2	$ 1.1	$ 5.2	$ 1.1
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition			3 years
Restricted stock
Subsidiary, Sale of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period (in shares)		8,000		174,410

Shares Accelerated For Board Of Director Exit

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Shares Forfeited

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No definition available.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

+ References

No definition available.

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