Note 4 - Net Income Per Share (Tables)

9 Months Ended

Dec. 31, 2018

Notes Tables

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

	Quarter Ended Dec. 31
	2018		2017
Weighted average common shares outstanding – basic		4,845,010		4,841,369
Dilutive effect of stock options		5,497		5,921
Shares used in computing net income per share – diluted		4,850,507		4,847,290

	Nine Months Ended Dec. 31
	2018		2017
Weighted average common shares outstanding – basic		4,843,355		4,841,130
Dilutive effect of stock options		6,765		4,906
Shares used in computing net income per share – diluted		4,850,120		4,846,036