Nature of Operations, Basis of Presentation and Recently Issued Accounting Pronouncements - Additional Information (Details) - ASU No. 2016-09 $ in Millions	6 Months Ended
Jun. 30, 2017 USD ($)
Adoption Related to Income Tax Portion [Member]
Nature of Operations Basis of Presentation and Recently Issued Accounting Pronouncements [Line Items]
Increase (decrease) in retained earnings due to effect on adoption	$ 4.8
Increase in deferred income tax assets due to effect on adoption	4.8
Adoption Related to Forfeitures [Member]
Nature of Operations Basis of Presentation and Recently Issued Accounting Pronouncements [Line Items]
Increase (decrease) in retained earnings due to effect on adoption	(0.5)
Increase in deferred income tax assets due to effect on adoption	0.3
Increase in additional paid in capital due to effect on adoption	$ 0.8

Nature of operations basis of presentation and recently issued accounting pronouncements.

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- Definition

Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP).

+ References

No definition available.

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- Definition

Amount of the cumulative effect on retained earnings net of related income tax effect.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22663-107794

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- Definition

The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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