Significant Accounting Policies (Other Property, Plant And Equipement) (Details)	9 Months Ended
Sep. 30, 2013
Property, Plant and Equipment [Line Items]
Percentage of subsidiary ownership	100.00%
Minimum [Member] \| Other Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipement useful life	5 years
Maximum [Member] \| Other Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipement useful life	25 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration