Revenue Recognition - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Payment period from distributors received from date of sale			45 days
Earnings (loss) per share basic	$ 0	$ (0.04)	$ (0.02)	$ (0.08)
Earnings (loss) per share-diluted	0	(0.04)	$ (0.02)	(0.08)
Effect of significant financing component when transfer and customer payment of good or service occurs within one year or less			true
Exclusion of licensing revenue change in estimate
Disaggregation Of Revenue [Line Items]
Earnings (loss) per share basic	(0.01)	(0.06)	$ (0.03)	(0.1)
Earnings (loss) per share-diluted	$ (0.01)	$ (0.06)	$ (0.03)	$ (0.1)
VASCEPA 1-Gram
Disaggregation Of Revenue [Line Items]
Product expiration date after being converted into capsule form			4 years
VASCEPA 0.5-Gram
Disaggregation Of Revenue [Line Items]
Product expiration date after being converted into capsule form			3 years
Edding
Disaggregation Of Revenue [Line Items]
Adjusted measure of performance and additional license revenue recognized	$ 4.0	$ 5.0
HLS
Disaggregation Of Revenue [Line Items]
Adjusted measure of performance and additional license revenue recognized		$ 5.3
Minimum
Disaggregation Of Revenue [Line Items]
Sales discount percentage	2.00%		2.00%
Maximum
Disaggregation Of Revenue [Line Items]
Sales discount percentage	3.00%		3.00%