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Revenue Recognition - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation Of Revenue [Line Items] |  |  |  |  |
Payment period from distributors received from date of sale |  |  | 45 days |  |
Net loss per share basic | [1] |  | $ (0.15) | $ (0.26) | $ 0.02
Net loss per share-diluted | [1] |  | $ (0.15) | $ (0.26) | $ 0.02
Effect of significant financing component when transfer and customer payment of good or service occurs within one year or less |  |  | true |  |
Edding |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |
Adjusted measure of performance and additional license revenue recognized |  | $ 5.0 |  |  |
HLS |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |
Adjusted measure of performance and additional license revenue recognized |  | $ 5.3 |  |  |
Medicaid rebate |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |
Change in estimate recognized |  |  | $ 15.1 |  |
Change in net income loss |  |  | $ 15.1 |  |
Net loss per share basic |  |  | $ (0.18) |  |
Net loss per share-diluted |  |  | (0.18) |  |
Exclusion of licensing revenue change in estimate |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |
Net loss per share basic |  |  | (0.17) |  |
Net loss per share-diluted |  |  | $ (0.17) |  |
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] |  |  |  |  |
Sales discount percentage |  |  | 2.00% |  |
Maximum |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |
Sales discount percentage |  |  | 3.00% |  |
[1] | Excluding the licensing revenue change in estimate and Medicaid change in estimate, both discussed in Note 12 – Revenue Recognition, net loss per share basic and diluted for the year ended December 31, 2023 would have been $(0.21).

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