Commitments and Contingencies Operating Leases - Additional Information (Details)	12 Months Ended
Dec. 31, 2016
Leases [Abstract]
Lessee Leasing Arrangements, Operating Leases, Term of Contract	20 years
Lessee Leasing Arrangements, Operating Leases, Renewal Term	5 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.

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