Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) $ in Millions	Jan. 01, 2018 USD ($)
Difference between Revenue Guidance in Effect before and after Topic 606 \| Accounting Standards Update 2014-09 \| Subsequent Event
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Transition adjustment expected to be recorded as result of adoption of new accounting pronouncement (less than)	$ 0.5

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

No definition available.

Name:	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant