Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2014
Computer software [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Computer software [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Office furniture and equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Office furniture and equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Laboratory Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Laboratory Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Leasehold Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	Lesser of estimated useful life or estimated lease term