Subsequent Events (Narrative) (Details) - The STOMP Arbitration [Member] - USD ($)		1 Months Ended
Mar. 05, 2018	Apr. 30, 2016
Subsequent Event [Line Items]
Settlement awarded		$ 2,300,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Settlement awarded	$ 720,000

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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