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Intangible Assets - Narrative (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended | 242 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 30, 2018 | Jan. 31, 2014 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2018 | Mar. 31, 2024 | Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Fully amortized intangible assets |  |  | $ 137,894 |  |  | $ 137,894 | $ 137,894
Accumulated Amortization |  |  | 18,543 |  |  | 18,543 | 16,525
Intangible asset amortization |  |  | 2,018 | $ 379 |  |  |
HETLIOZ® |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Acquisition of intangible assets |  | $ 8,000 |  |  | $ 25,000 | 37,500 |
Cumulative worldwide sales milestone | $ 250,000 |  |  |  |  |  |
Fully amortized intangible assets |  |  | 33,000 |  |  | 33,000 | 33,000
Accumulated Amortization |  |  | 16,303 |  |  | 16,303 | 15,937
Fanapt® |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Fully amortized intangible assets |  |  | 27,900 |  |  | 27,900 | 27,900
Accumulated Amortization |  |  | $ 27,900 |  |  | $ 27,900 | $ 27,900

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483154/926-20-50-5 + Details
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