Balance Sheet Account Detail - Schedule of Other Receivables (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
FOLOTYN milestone for first sale in Japan	$ 2,000	$ 0
CASI note - short term	1,515	0
Other miscellaneous receivables	1,033	239
Employee receivables	857	0
Reimbursements due from development partners for incurred research and development expenses	418	1,796
Insurance receivable	53	500
Receivable for contracted sales and marketing services	0	1,831
Income tax receivable	0	1,388
Other receivables	5,876	$ 5,754
Medicaid rebate credit	$ 600