Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2019

Notes Tables

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

	Year Ended March 31
	2019		2018
Weighted average common shares outstanding – basic		4,844,010		4,841,347
Dilutive effect of stock options		6,557		4,865
Shares used in computing net income per share – diluted		4,850,567		4,846,212