Commitments and Contingencies - Other (Details)	9 Months Ended
Sep. 30, 2019
Minimum
Commitments and Contingencies
Remaining term of conditional commitment	1 month
Maximum
Commitments and Contingencies
Remaining term of conditional commitment	5 years

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