Note 8 - Related Party Transactions (Details Textual) - USD ($)		1 Months Ended
	Sep. 20, 2016	Apr. 30, 2018
Director [Member] | Subsequent Event [Member]
Related Party Transaction, Monthly Cash Payment		$ 12,000
Director [Member] | Subsequent Event [Member] | Restricted Stock Units (RSUs) [Member] | Stock Incentive Plan 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		240,000
GLG Pharma, LLC. [Member]
Stock Expected to be Issued Upon Agreement, Shares	400,000
Stock Expected to be Issued Upon Agreement, Shares, Tranche One	100,000
Stock Expected to be Issued Upon Agreement, Shares, Tranche Four	100,000
Stock Expected to be Issued Upon Agreement, Shares, Tranche Two	100,000
Stock Expected to be Issued Upon Agreement, Shares, Tranche Three	100,000