XML 131 R64.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Long-Term Debt - Narrative (Details) $ / shares in Units, shares in Thousands, $ in Thousands |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 26, 2023 USD ($) $ / shares shares | Apr. 04, 2023 USD ($) | Apr. 05, 2022 USD ($) | Feb. 16, 2018 USD ($) | Oct. 31, 2023 USD ($) shares | Dec. 31, 2023 USD ($) $ / shares | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) | Apr. 03, 2023 $ / shares | Mar. 31, 2023 USD ($) | Feb. 01, 2023 USD ($) | Nov. 04, 2022 USD ($)
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  | $ 9,886 | $ 12,342 | $ 9,942 |  |  |  |
Amortization of debt issuance costs and debt discount |  |  |  |  |  | 2,796 | 6,052 | 1,248 |  |  |  |
Proceeds from issuance of long-term debt |  |  |  |  |  | 30,000 | 0 | 0 |  |  |  |
Payments of debt issuance costs |  |  |  |  |  | 4,357 | 4,804 | 0 |  |  |  |
Change in fair value of October 2023 Notes conversion feature |  |  | $ 5,508 |  |  |  | 5,508 |  |  |  |  |
Increase in fair value of unseparated embedded conversion feature |  |  | 5,508 |  |  |  |  |  |  |  |  |
ADSs, conversion ratio | 0.1161846 |  |  |  |  |  |  |  |  |  |  |
Debt converted | $ 1,470 |  |  |  |  |  |  |  |  |  |  |
Debt converted, shares issued (in shares) | shares | 12,347 |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  | $ 13,129 |  |  |  | $ 13,129 | $ 0 | 0 |  |  |  |
Ordinary shares, nominal value (in dollars per share) | $ / shares | $ 0.01 |  |  |  |  | $ 0.01 | $ 0.01 |  | $ 0.01 |  |  |
American Depositary Shares |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt converted, shares issued (in shares) | shares |  |  |  |  | 408 |  |  |  |  |  |  |
Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  | $ 6,143 | $ 12,342 | 9,942 |  |  |  |
Coupon interest expense |  |  |  |  |  | 3,347 | 6,405 | 6,469 |  |  |  |
Amortization of debt issuance costs and debt discount |  |  |  |  |  | 2,796 | 6,052 | 1,248 |  |  |  |
February 2023 Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt repaid |  |  |  |  |  | 17,500 | $ 8,653 | 0 |  |  |  |
February 2023 Notes | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 4.50% |  |  | 4.50% |  |  |  |  |
Long-term debt, gross |  |  |  |  |  |  | $ 17,500 |  |  |  |  |
February 2023 Notes | Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 125 |  |  |  |  |  |  |  |
Option to purchase aggregate principal amount, term |  |  |  | 30 days |  |  |  |  |  |  |  |
Option to increase aggregate principal amount |  |  |  | $ 18,750 |  |  |  |  |  |  |  |
Proceeds from issuance of long-term debt |  |  |  | $ 137,560 |  |  |  |  |  |  |  |
October 2023 Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt repaid |  |  |  |  |  | $ 21,165 | $ 0 | $ 0 |  |  |  |
October 2023 Notes | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.50% |  |  | 4.50% |  |
Long-term debt, gross |  |  |  |  | $ 21,187 |  | $ 117,375 |  |  | $ 117,375 | $ 17,500 |
Payments of debt issuance costs |  |  | 4,804 |  |  |  |  |  |  |  |  |
Debt exchanged |  | $ 96,188 |  |  |  |  |  |  |  |  |  |
Debt repaid |  |  |  |  | $ 21,641 |  |  |  |  |  |  |
October 2023 Notes | Senior Notes | Third Party |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Payments of debt issuance costs |  |  | 5,450 |  |  |  |  |  |  |  |  |
October 2023 Notes | Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 26,375 |  |  |  |  |  |  |  |  |
Debt instrument, exchange amount |  |  | $ 117,375 |  |  |  |  |  |  |  |  |
Debt instrument, repurchased face amount |  |  |  |  |  |  |  |  |  |  |  | $ 8,875
April 2027 Notes | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  | 6.00% |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  | $ 106,268 |  |  |  |  |  |  |  |  |  |
Debt converted |  | $ 106,268 |  |  |  |  |  |  |  |  |  |

X
- Definition Adjustments to Additional Paid in Capital, Adjustments In Fair Value Of Convertible Debt Conversion Feature + References No definition available. + Details
Name: | avdl_AdjustmentsToAdditionalPaidInCapitalAdjustmentsInFairValueOfConvertibleDebtConversionFeature
Namespace Prefix: | avdl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition American Depository Shares, Conversion Ratio + References No definition available. + Details
Name: | avdl_AmericanDepositorySharesConversionRatio
Namespace Prefix: | avdl_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Coupon Interest Expense + References No definition available. + Details
Name: | avdl_CouponInterestExpense
Namespace Prefix: | avdl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Debt Instrument, Convertible, Embedded Conversion Feature, Increase (Decrease) + References No definition available. + Details
Name: | avdl_DebtInstrumentConvertibleEmbeddedConversionFeatureIncreaseDecrease
Namespace Prefix: | avdl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Debt Instrument, Exchange Amount + References No definition available. + Details
Name: | avdl_DebtInstrumentExchangeAmount
Namespace Prefix: | avdl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Option To Increase Face Amount + References No definition available. + Details
Name: | avdl_DebtInstrumentOptionToIncreaseFaceAmount
Namespace Prefix: | avdl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Option To Purchase Aggregate Principal Amount, Term + References No definition available. + Details
Name: | avdl_DebtInstrumentOptionToPurchaseAggregatePrincipalAmountTerm
Namespace Prefix: | avdl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of amortization expense attributable to debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69F -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-3 + Details
Name: | us-gaap_AmortizationOfFinancingCostsAndDiscounts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-5 + Details
Name: | us-gaap_DebtConversionConvertedInstrumentAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-5 + Details
Name: | us-gaap_DebtConversionConvertedInstrumentSharesIssued1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-5 + Details
Name: | us-gaap_DebtConversionOriginalDebtAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-4 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482900/835-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-2 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482949/835-30-55-8 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face (par) amount of the original debt instrument that was repurchased. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentRepurchasedFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + 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 470 -SubTopic 50 -Section 40 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481303/470-50-40-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481303/470-50-40-4 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69F -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-6 + Details
Name: | us-gaap_InterestExpenseDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_PaymentsOfDebtIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(i)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_RepaymentsOfSeniorDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=avdl_AmericanDepositarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=avdl_February2023NotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=avdl_October2023NotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=avdl_ThirdPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=avdl_April2027NotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |