Summary of Significant Accounting Policies - Average Estimated Useful Lives of Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2015
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Depreciable life	30 years
Minimum | Leasehold Improvements
Property, Plant and Equipment [Line Items]
Depreciable life	20 years
Minimum | Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Depreciable life	7 years
Minimum | Automobiles
Property, Plant and Equipment [Line Items]
Depreciable life	5 years
Minimum | Computer Equipment
Property, Plant and Equipment [Line Items]
Depreciable life	3 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Depreciable life	50 years
Maximum | Leasehold Improvements
Property, Plant and Equipment [Line Items]
Depreciable life	30 years
Maximum | Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Depreciable life	20 years
Maximum | Automobiles
Property, Plant and Equipment [Line Items]
Depreciable life	7 years
Maximum | Computer Equipment
Property, Plant and Equipment [Line Items]
Depreciable life	5 years