Contingent Liabilities and Commitments - Purchase Commitments (Details) - Inventories $ in Thousands	Dec. 31, 2016 USD ($)
Purchase Commitment:
2017	$ 778
2018	1,032
2019	1,126
2020	1,126
2021	1,126
Thereafter	15,295
Total	$ 20,483

Purchase Commitment, Maximum, Due in Next Twelve Months

No definition available.

Name:	avdl_PurchaseCommitmentMaximumDueinNextTwelveMonths
Namespace Prefix:	avdl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant