v2.4.0.8

Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Building [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	13 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	7 years	7 years
Minimum [Member] | Lab Equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	2 years	2 years
Minimum [Member] | Computer hardware [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	5 years	5 years
Minimum [Member] | Software [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	3 years	3 years
Maximum [Member] | Lab Equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	7 years	7 years
Maximum [Member] | Computer hardware [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	7 years	7 years
Maximum [Member] | Software [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	5 years	5 years

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration