v3.8.0.1

Note 6 - Collaboration Agreement (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Revenue Recognition Amended Agreements [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 7 |  |  | 201 6 |  |  | 2015 |
License |  | $ | — |  |  | $ | — |  |  | $ | 13,167 |
Product sales |  |  | 6,673 |  |  |  | 5,742 |  |  |  | — |
Joint steering committee, research and development services and demonstration devices |  |  | 269 |  |  |  | 688 |  |  |  | 1,690 |
Non-cash royalty revenue related to Royalty Monetization (See Note 8) |  |  | 151 |  |  |  | 7 |  |  |  | — |
Royalty revenue |  |  | 50 |  |  |  | 3 |  |  |  | — |
Total |  | $ | 7,143 |  |  | $ | 6,440 |  |  | $ | 14,857 |

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- Definition Tabular disclosure of the recognition of revenue under the amended agreements. + References No definition available. + Details
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Namespace Prefix: | acrx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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