Note 6 - Net Income (Loss) per Share (Tables)

6 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

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

	Three Months Ended			Three Months Ended
	September 30, 2017			September 30, 2016
Basic net (loss) income per share computation:
Net (loss) income	$	(2,920,589	)	$	272,055
Weighted-average common shares outstanding		3,255,887			3,255,887
Basic net (loss) income per share	$	(0.90	)	$	0.08
Diluted net (loss) income per share computation
Net (loss) income	$	(2,920,589	)	$	272,055
Add: Change in fair value of warrants		-			34,000
Diluted (loss) income	$	(2,920,589	)		238,055
Weighted-average common shares outstanding		3,255,887			3,255,887
Incremental shares attributable to the assumed exercise of outstanding stock options and warrants		-			10,246
Total adjusted weighted-average shares		3,255,887			3,266,133
Diluted net (loss) income per share	$	(0.90	)	$	0.07

	Six Months Ended			Six Months Ended
	September 30, 2017			September 30, 2016
Basic net income per share computation:
Net (loss) income	$	(3,206,680	)	$	682,364
Weighted-average common shares outstanding		3,255,887			3,255,887
Basic net  income per share	$	(0.98	)	$	0.21
Diluted net income per share computation
Net income	$	(3,206,680	)	$	682,364
Change in fair value of warrants		-			33,000
Diluted income	$	(3,206,680	)		649,364
Weighted-average common shares outstanding		3,255,887			3,255,887
Incremental shares attributable to the assumed exercise of outstanding stock options and warrants		-			11,305
Total adjusted weighted-average shares		3,255,887			3,267,192
Diluted net (loss) income per share	$	(0.98	)	$	0.20

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:

	September 30, 2017		September 30, 2016
Stock options		77,000		75,000
Warrants		50,000		-
		127,000		75,000