Note 2 - Summary of Significant Accounting Policies - Summary of Useful Lives of Assets (Details) |
12 Months Ended |
---|---|
Dec. 31, 2017 | |
Minimum [Member] | Office Equipment [Member] | |
Computer software (in years) (Year) | 3 years |
Minimum [Member] | Laboratory Equipment [Member] | |
Computer software (in years) (Year) | 5 years |
Minimum [Member] | Computer Software, Intangible Asset [Member] | |
Computer software (in years) (Year) | 3 years |
Maximum [Member] | Office Equipment [Member] | |
Computer software (in years) (Year) | 7 years |
Maximum [Member] | Laboratory Equipment [Member] | |
Computer software (in years) (Year) | 7 years |
Maximum [Member] | Computer Software, Intangible Asset [Member] | |
Computer software (in years) (Year) | 5 years |