Commitments and Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Minimum [Member]
Property Subject to or Available for Operating Lease [Line Items]
Lease terms	6 years
Maximum [Member]
Property Subject to or Available for Operating Lease [Line Items]
Lease terms	74 years
Put Option [Member]
Property Subject to or Available for Operating Lease [Line Items]
Purchase price	$ 35.0