Note 10 - Stock Repurchase Program	6 Months Ended
Sep. 30, 2016
Notes to Financial Statements
Stock Repurchase Plan Disclosure [Text Block]	NOTE 10. STOCK REPURCHASE PROGRAM On January 21, 2009 we announced that our Board of Directors authorized the repurchase of up to $2,500,000 of our Common Stock, and on August 27, 2015 we announced that our Board authorized $5,000,000 of additional repurchases. We did not repurchase any of our Common Stock under the program during the quarter ended September 30, 2016. The remaining authorization was $4,540,806 as of September 30, 2016. The Repurchase Program may be modified or discontinued at any time without notice.

Note 10 - Stock Repurchase Program

6 Months Ended

Sep. 30, 2016

Stock Repurchase Plan Disclosure [Text Block]

NOTE 10. STOCK REPURCHASE PROGRAM

On January 21, 2009 we announced that our Board of Directors authorized the repurchase of up to $2,500,000 of our Common Stock, and on August 27, 2015 we announced that our Board authorized $5,000,000 of additional repurchases. We did not repurchase any of our Common Stock under the program during the quarter ended September 30, 2016. The remaining authorization was $4,540,806 as of September 30, 2016. The Repurchase Program may be modified or discontinued at any time without notice.