Other Operating Expenses/(Income) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Operating Expenses [Line Items]
Total other operating expenses	$ 78	$ 257	$ 9,001	$ 88
Litigation Settlement [Member]
Other Operating Expenses [Line Items]
Total other operating expenses			$ 6,000	$ (204)

The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.

No definition available.

Name:	us-gaap_OtherOperatingIncomeExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration