Income Taxes (Narrative) (Details) - IRS	9 Months Ended
Sep. 30, 2016
Minimum [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination	2012
Maximum [Member]
Income Tax Examination [Line Items]
Income Tax Examination Year Under Examination	2013

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