Note 12 - License and Collaboration Agreement With Related Party (Details Textual) - USD ($) |
Sep. 27, 2018 |
Aug. 12, 2019 |
Dec. 31, 2018 |
|---|---|---|---|
| SK Group [Member] | DiaMedica [Member] | |||
| Noncontrolling Interest, Ownership Percentage by Parent | 8.40% | ||
| License Agreement [Member] | Ahon Pharma [Member] | |||
| Revenue from Related Parties | $ 500,000 | ||
| Collaboration Agreement, Non-refundable Payment Payable Upon Regulatory Clearance | 4,500,000 | ||
| Collaboration Agreement, Additional Payment Upon Development and Sales Milestone | $ 27,500,000 | ||
| Collaboration Agreement, Percent of Royalties Upon Development and Sales Milestones | 10.00% | ||
| License Agreement [Member] | Ahon Pharma [Member] | Subsequent Event [Member] | |||
| Collaboration Agreement, Non-refundable Payment Payable Upon Regulatory Clearance | $ 4,500,000 |