Commitments and Contingencies (Narrative) (Details) - Class Action Proceedings, State Law Claims - claim	Nov. 25, 2019	Sep. 18, 2019
Loss Contingencies [Line Items]
Number of claims dismissed		66
Number of claims filed		91
Number of dismissed claims submitted for reinstatement	15

Number of pending claims pertaining to a loss contingency.

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=118942415&loc=d3e14435-108349

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant