Note 4 - Net Income Per Share (Tables)

6 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Weighted Average Number of Shares [Table Text Block]

	Quarter Ended Sept. 30
	2018		2017
Weighted average common shares outstanding – basic		4,843,032		4,841,010
Dilutive effect of stock options		9,612		4,622
Shares used in computing net income per share – diluted		4,852,644		4,845,632

	Six Months Ended Sept. 30
	2018		2017
Weighted average common shares outstanding – basic		4,842,524		4,841,010
Dilutive effect of stock options		8,548		4,897
Shares used in computing net income per share – diluted		4,851,072		4,845,907