Variable Interest Entities Variable Interest Entities - Textual (Details)	6 Months Ended
	Jun. 30, 2016 facilities
Variable Interest Entity [Line Items]
Number of Facilities Consolidated As Variable Interest Entities	10
Minimum [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	6.80%
Maximum [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	99.50%