Goodwill and IPR&D - Additional Information (Detail)	Sep. 30, 2015 USD ($)
SynthRx [Member]
Goodwill And Intangible Assets [Line Items]
Impairment charge	$ 0

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

No definition available.

Name:	us-gaap_GoodwillAndIntangibleAssetImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration