Recently Issued Accounting Pronouncements - Additional Information (Details) - ASU 2016-02 [Member] $ in Millions	9 Months Ended
Sep. 30, 2018 USD ($)
Minimum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Increase in assets and liabilities	$ 45.0
Maximum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Increase in assets and liabilities	$ 60.0

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

No definition available.

Name:	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration