Note 7 - Net Loss per Share (Details) - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share - shares	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-Dilutive Securities	1,142,722	79,000
Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-Dilutive Securities	1,050,222	0
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-Dilutive Securities	42,500	79,000
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-Dilutive Securities	50,000	0