Business Segment, Geographic, and Concentration Risk Information - Summary of Revenue by Product Group (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Total revenue by product group:
Total consolidated revenue	$ 19,364	$ 18,428	$ 66,868	$ 67,829
API Sales
Total revenue by product group:
Total consolidated revenue	3,647	3,690	12,308	9,538
Medical Device Sales
Total revenue by product group:
Total consolidated revenue		1,322		2,342
Contract Manufacturing Revenue
Total revenue by product group:
Total consolidated revenue	93	17	382	412
Commercial Product Sales
Total revenue by product group:
Total consolidated revenue	15,497	8,280	53,743	25,092
License Fees
Total revenue by product group:
Total consolidated revenue		5,000		30,000
Other Revenue
Total revenue by product group:
Total consolidated revenue	$ 127	$ 119	$ 435	$ 445