Business Segment Information and Geographic Data - Additional Information (Details) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) segment
Segment Reporting Information [Line Items]
Number of reporting segments \| segment		3
Pension expense	$ (2.9)	$ (1.6)
Consulting and other employee costs	6.2
Property tax refund	2.2
Asset disposals and write-downs	$ (0.1)	$ (24.6)
Net revenue \| Geographic Concentration Risk \| United Kingdom
Segment Reporting Information [Line Items]
Concentration risk percentage	22.90%	29.90%

Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments Related to Restructuring

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- Definition

Restructuring Costs, Consulting and Other Employee Costs

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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- Definition

Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

+ References

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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- Definition

A tax based on the assessed value of real estate by the local government. The tax is usually based on the value of property (including the land).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 30
-Section 45
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- Definition

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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