Note 7 - Net Income (Loss) per Share (Details) - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share - shares	9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-Dilutive Securities	1,692,278	1,125,000
Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-Dilutive Securities	1,599,778	1,000,000
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-Dilutive Securities	42,500	75,000
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-Dilutive Securities	50,000	50,000