Revenue Recognition - Summary of Disaggregation of Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation Of Revenue [Line Items]
Total revenues	$ 80,630	$ 69,514	$ 205,214	$ 176,688
U.S.
Disaggregation Of Revenue [Line Items]
Total revenues	80,608	69,514	202,693	176,688
Non U.S.
Disaggregation Of Revenue [Line Items]
Total revenues	22	0	2,521	0
HEPLISAV-B
Disaggregation Of Revenue [Line Items]
Total revenues	79,345	62,318	197,377	162,209
HEPLISAV-B | U.S.
Disaggregation Of Revenue [Line Items]
Total revenues	79,345	62,318	195,030	162,209
HEPLISAV-B | Non U.S.
Disaggregation Of Revenue [Line Items]
Total revenues	0	0	2,347	0
Product revenue, net
Disaggregation Of Revenue [Line Items]
Total revenues	79,345	62,318	197,377	162,209
Product revenue, net | U.S.
Disaggregation Of Revenue [Line Items]
Total revenues	79,345	62,318	195,030	162,209
Product revenue, net | Non U.S.
Disaggregation Of Revenue [Line Items]
Total revenues	0	0	2,347	0
Other revenue
Disaggregation Of Revenue [Line Items]
Total revenues	1,285	7,196	7,837	14,479
Other revenue | U.S.
Disaggregation Of Revenue [Line Items]
Total revenues	1,263	7,196	7,663	14,479
Other revenue | Non U.S.
Disaggregation Of Revenue [Line Items]
Total revenues	$ 22	$ 0	$ 174	$ 0