Loss Contingency, Royalty Payments On Net Sales, Percentage

No definition available.

Name:	avdl_LossContingencyRoyaltyPaymentsOnNetSalesPercentage
Namespace Prefix:	avdl_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Royalty Expense (Reversal)

+ References

No definition available.

+ Details

Name:	avdl_RoyaltyExpenseReversal
Namespace Prefix:	avdl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmountAwardedFromOtherParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(6))
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_LitigationCaseAxis=avdl_JazzLawsuitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=avdl_LUMRYZMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=avdl_LUMRYZSoldForNarcolepsyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=avdl_LUMRYZForIndicationsOtherThanCataplexyOrExcessiveDaytimeSleepinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events (Details) - Jazz Lawsuits $ in Thousands			3 Months Ended
Subsequent Events (Details) - Jazz Lawsuits $ in Thousands	Oct. 21, 2025 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Forecast
Subsequent Event [Line Items]
Litigation settlement, fee expense			$ 32,700
LUMRYZ
Subsequent Event [Line Items]
Reversal of royalties accrued		$ 9,500
LUMRYZ \| Subsequent Event
Subsequent Event [Line Items]
Settlement payment amount	$ 90,000
LUMRYZ Sold For Narcolepsy \| Subsequent Event
Subsequent Event [Line Items]
Percentage of royalty payments	0.0385
LUMRYZ For Indications Other Than Cataplexy Or Excessive Daytime Sleepiness \| Subsequent Event
Subsequent Event [Line Items]
Percentage of royalty payments	0.10