Commitments and Contingencies - Legal Proceedings (Details)	1 Months Ended
Mar. 31, 2017 entity
Commitments and Contingencies
Number filing notice of opposition	10

Number of plaintiffs that have filed claims pertaining to a loss contingency.

No definition available.

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