v3.23.2

Note 11 - Liability Related to Sale of Future Royalties - Activity of Liability Related to Sale of Future Royalties (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended | 87 Months Ended
--- | --- | --- | --- | ---
May 31, 2022 | Sep. 30, 2015 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022
Liability related to sale of future royalties — beginning balance |  |  | $ 85,288 |  | $ 0
Proceeds from sale of future royalties |  | $ 61,200 | 0 |  | 61,184
Non-cash royalty revenue |  |  | 0 |  | (1,083)
Non-cash interest (income) expense recognized |  |  | (1,136) | $ (3,038) | 24,051
Consideration paid for termination of Royalty Monetization | $ (100) |  | (100) |  | (100)
Gain on termination of liability related to sale of future royalties |  |  | (84,052) | $ 0 | (84,052)
Liability related to sale of future royalties as of December 31, 2022 |  |  | $ 0 |  | $ 0

X
- Definition Amount of consideration paid for termination of Royalty Monetization. + References No definition available. + Details
Name: | acrx_ConsiderationPaidForTerminationOfRoyaltyMonetization
Namespace Prefix: | acrx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain on termination of liability related to sale of future royalties. + References No definition available. + Details
Name: | acrx_GainOnTerminationOfLiabilityRelatedToSaleOfFutureRoyalties
Namespace Prefix: | acrx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents liability related to future royalties. + References No definition available. + Details
Name: | acrx_LiabilityRelatedToSaleOfFutureRoyalties
Namespace Prefix: | acrx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liability related to sale of future royalties less current portion. + References No definition available. + Details
Name: | acrx_LiabilityRelatedToSaleOfFutureRoyaltiesNet
Namespace Prefix: | acrx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Net proceeds from sale of future royalties. + References No definition available. + Details
Name: | acrx_NetProceedsFromSaleOfFutureRoyalties
Namespace Prefix: | acrx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amoutn of noncash interest income expense on liability related to sale of future royalties. + References No definition available. + Details
Name: | acrx_NoncashInterestIncomeExpenseOnLiabilityRelatedToSaleOfFutureRoyalties
Namespace Prefix: | acrx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of non-cash royalty revenue recognized in connection to royalty monetization that has been realized. + References No definition available. + Details
Name: | acrx_NoncashRoyaltyRevenueRelatedToRoyaltyMonetizationRealized
Namespace Prefix: | acrx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration