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Commitments and Contingencies - Narrative (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2021 USD ($)
Loss Contingencies [Line Items] |
Percentage of royalty payable on net sales | 15.00%
Guarantee, liability | $ 1,188
Guarantee from Armistice | 1,184
Maximum |
Loss Contingencies [Line Items] |
Guarantee, liability | $ 10,300

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- Definition Guarantee Asset, Current Carrying Value + References No definition available. + Details
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Namespace Prefix: | avdl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The percentage of royalty that has to be paid by the company as per the royalty agreement. + References No definition available. + Details
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Namespace Prefix: | avdl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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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 No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |