Balance Sheet Account Detail - Schedule of Other Receivables (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Income tax receivable	$ 1,209	$ 1,301
Insurance receivable	350	7,100
Mundipharma promissory note	0	2,215
CASI note - short term	1,500	0
Eagle receivable for services and support costs (Note 13)	1,939	0
Research and development expenses - reimbursements due	1,699	1,699
Other miscellaneous receivables	271	257
Other receivables	$ 6,968	$ 12,572