Leases - Operating Leases - Renewal Options (Details)	12 Months Ended
Dec. 31, 2015
Minimum
Operating Leases - Renewal Options
Renewal option, term	5 years
Maximum
Operating Leases - Renewal Options
Renewal option, term	15 years

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

No definition available.

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