Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2015 segment
Property, Plant and Equipment [Line Items]
Vesting period (in years)	5 years
Expiration period of options	10 years
Number of operating segments	1
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Maximum useful life of PPE (in years)	40 years