Lease Arrangements (Narrative) (Details)	12 Months Ended
Dec. 31, 2015
Maximum [Member]
Operating Leased Assets [Line Items]
Lease arrangements, remaining terms of leases under operating lease	11 years

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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