Commitments and Contingencies - Additional Information - (Details)	Nov. 06, 2017 Lawsuit $ / shares	Jun. 30, 2020 $ / shares	Dec. 31, 2019 $ / shares
Commitments And Contingencies Disclosure [Abstract]
Common stock, par value (in dollars per share) \| $ / shares	$ 0.001	$ 0.001	$ 0.001
Number of lawsuits filed	4
Number of lawsuits dismissed	3

The total number of new claims filed pertaining to a loss contingency during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration