Summary of Significant Accounting Policies - Estimated Useful Lives (Details)	12 Months Ended
	Dec. 31, 2016
Leasehold improvements
Property, Plant and Equipment [Line Items]
Useful Life (in years)	15 years
Minimum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Useful Life (in years)	5 years
Minimum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	3 years
Minimum | Software
Property, Plant and Equipment [Line Items]
Useful Life (in years)	3 years
Minimum | Equipment held under capital leases
Property, Plant and Equipment [Line Items]
Useful Life (in years)	5 years
Maximum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Useful Life (in years)	40 years
Maximum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	10 years
Maximum | Software
Property, Plant and Equipment [Line Items]
Useful Life (in years)	10 years
Maximum | Equipment held under capital leases
Property, Plant and Equipment [Line Items]
Useful Life (in years)	10 years