Commitments and Contingencies - Securities and Derivative Litigation (Details) - Securities and Derivative Litigation $ in Thousands		1 Months Ended
Oct. 23, 2019 USD ($)	Apr. 30, 2018 claim
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party \| $	$ 16,500
Number of claims filed \| claim		2

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