Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2012
Accounting Policies [Abstract]
Percentage of prompt pay discount the company accrues	100.00%
Research and Development Expense [Abstract]
Percentage of start-up costs of total contract value, minimum	10.00%
Percentage of start-up costs of total contract value, maximum	20.00%
Building and improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Building and improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	35 years
Laboratory and other equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years
Laboratory and other equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years