Note 11 - Related Party Transactions (Details Textual) - Moores Cancer Center at University of California San Diego [Member] - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
|
| Extension for Services Agreement, Amount, Related Parties | $ 300,000 | |
| us-gaap_ResearchAndDevelopmentExpenseMember | ||
| Related Party Transaction, Amounts of Transaction | $ 62,000 | $ 61,000 |
| X | ||||||||||
- Definition The amount of extension approved for a related party services agreement. No definition available.
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| X | ||||||||||
- Definition Amount of transactions with related party during the financial reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
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