Revenue Recognition - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2022
Disaggregation Of Revenue [Line Items]
Payment period from distributors received from date of sale	30 days
Effect of significant financing component when transfer and customer payment of good or service occurs within one year or less	true
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
Minimum
Disaggregation Of Revenue [Line Items]
Payment period from distributors received from date of sale	30 days
Minimum | U.S. and Europe
Disaggregation Of Revenue [Line Items]
Sales discount percentage	2.00%
Maximum
Disaggregation Of Revenue [Line Items]
Payment period from distributors received from date of sale	60 days
Maximum | U.S. and Europe
Disaggregation Of Revenue [Line Items]
Sales discount percentage	3.00%