Note 10 - Stock Repurchase Program (Tables)

6 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Stock Repurchase Program [Table Text Block]

							Total number of		Max. approximate
			Total		Average		shares purchased		dollar value of
			number		price		as part of publicly		shares that may
			of shares		paid		announced		yet be purchased
Period			purchased		per share		program		under the program
July 1, 2020	–	July 31, 2020		-	$	-		-	$	3,853,459
August 1, 2020	–	August 31, 2020		-	$	-		-	$	3,853,459
September 1, 2020	–	September 30, 2020		1,806	$	50.62		1,806	$	3,762,040
				1,806				1,806