Leases - Summary of Right-of-Use Assets and Related Lease Liabilities (Parenthetical) (Details)	6 Months Ended
Jun. 30, 2019 CorporateOfficeLease
Corporate Office Leases [Member]
Operating Leased Assets [Line Items]
Number of short-term operating leases	2

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.

No definition available.

Name:	us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration