Note 7 - Net Income (Loss) per Share (Tables)

9 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended			Three Months Ended
	December 31, 2018			December 31, 2017
Basic net income (loss) per share computation:
Net income (loss)	$	639,453		$	(333,436	)
Add: Deemed dividend related to beneficial conversion feature               of Series B Convertible Preferred Stock		(420,000	)		-
Add: Preferred dividends		(112,807	)		(30,667	)
Net income (loss) attributable to common shareholders		106,646			(364,103	)
Weighted-average common shares outstanding		3,255,887			3,255,887
Basic net income (loss) per share	$	0.03		$	(0.11	)
Diluted net income (loss) per share computation
Net income (loss)	$	639,453		$	(333,436	)
Add: Deemed dividend related to beneficial conversion feature               of Series B Convertible Preferred Stock		(420,000	)		-
Add: Preferred dividends		(112,807	)		(30,667	)
Diluted income (loss) attributable to common shareholders	$	106,646			(364,103	)
Weighted-average common shares outstanding		3,255,887			3,255,887
Incremental shares attributable to the assumed exercise of       preferred stock, outstanding stock options and warrants		153,770			-
Total adjusted weighted-average shares		3,409,657			3,255,887
Diluted net income (loss) per share	$	0.03		$	(0.11	)

	Nine Months Ended			Nine Months Ended
	December 31, 2018			December 31, 2017
Basic net loss per share computation:
Net loss	$	(298,030	)	$	(3,540,116	)
Add: Deemed dividend related to beneficial conversion feature               of Series B Convertible Preferred Stock		(420,000	)		-
Add: Preferred dividends		(232,807	)		(30,667	)
Net loss attributable to common shareholders		(950,837	)		(3,570,783	)
Weighted-average common shares outstanding		3,255,887			3,255,887
Basic net income per share	$	(0.29	)	$	(1.10	)
Diluted net loss per share computation
Net loss	$	(298,030	)	$	(3,540,116	)
Add: Deemed dividend related to beneficial conversion feature               of Series B Convertible Preferred Stock		(420,000	)
Add: Preferred dividends		(232,807	)		(30,667	)
Diluted loss attributable to common shareholders	$	(950,837	)		(3,570,783	)
Weighted-average common shares outstanding		3,255,887			3,255,887
Incremental shares attributable to the assumed exercise of outstanding stock options and warrants		-			-
Total adjusted weighted-average shares		3,255,887			3,255,887
Diluted net loss per share	$	(0.29	)	$	(1.10	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following table summarizes securities that, if exercised, would have an anti-dilutive effect on earnings per share:

	December 31, 2018		December 31, 2017
Convertible preferred stock (see Notes 13 and 14 for amounts to      be paid for conversion which the Company would receive)		1,599,778		1,000,000
Stock options		42,500		75,000
Warrants		50,000		50,000
		1,692,278		1,125,000