v3.23.2

Note 6 - In-license Agreement (Details Textual) - Aguettant [Member] - PFS Products [Member] $ in Millions	Jul. 14, 2021 USD ($)
License Agreement, Term (Year)	10 years
License Agreement, Renewal Term (Year)	5 years
License Agreement, Milestone Payments to be Paid, Maximum	$ 24
License Agreement, Minimum Sales Obligation Term (Month)	12 months
Minimum [Member]
License Agreement, Percent of Revenue Share Payment to be Paid	40.00%
Maximum [Member]
License Agreement, Percent of Revenue Share Payment to be Paid	45.00%

X

- Definition

Represents the maximum amount of milestone payments to be paid under license agreement.

+ References

No definition available.

+ Details

Name:	acrx_LicenseAgreementMilestonePaymentsToBePaidMaximum
Namespace Prefix:	acrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the minimum sales obligation term under license agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	acrx_LicenseAgreementMinimumSalesObligationTerm
Namespace Prefix:	acrx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of revenue share payments to be paid under license agreement.

+ References

No definition available.

+ Details

Name:	acrx_LicenseAgreementPercentOfRevenueSharePaymentToBePaid
Namespace Prefix:	acrx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The renewal term of the license agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	acrx_LicenseAgreementRenewalTerm
Namespace Prefix:	acrx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The term of the license agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	acrx_LicenseAgreementTerm
Namespace Prefix:	acrx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_CounterpartyNameAxis=acrx_AguettantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: