Note 10 - Stock Repurchase Program	6 Months Ended
Sep. 30, 2022
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 from time to time in open market, block, or privately negotiated transactions. The timing and extent of any repurchases depends on market conditions, the trading price of the company’s stock, and other factors, and subject to the restrictions relating to volume, price, and timing under applicable law. On August 27, 2015, we announced that our Board of Directors authorized up to $5,000,000 of additional repurchases. Our repurchase program does not have an expiration date and does not obligate us to purchase any shares. The Program may be modified or discontinued at any time without notice. We intend to finance any stock repurchases with cash provided by operating activities or maturating marketable securities. The remaining authorization was $3,598,519 as of September 30, 2022. We did not repurchase any of our Common Stock during the first six months of fiscal 2023.

Note 10 - Stock Repurchase Program

6 Months Ended

Sep. 30, 2022

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 from time to time in open market, block, or privately negotiated transactions. The timing and extent of any repurchases depends on market conditions, the trading price of the company’s stock, and other factors, and subject to the restrictions relating to volume, price, and timing under applicable law. On August 27, 2015, we announced that our Board of Directors authorized up to $5,000,000 of additional repurchases. Our repurchase program does not have an expiration date and does not obligate us to purchase any shares. The Program may be modified or discontinued at any time without notice. We intend to finance any stock repurchases with cash provided by operating activities or maturating marketable securities. The remaining authorization was $3,598,519 as of September 30, 2022. We did not repurchase any of our Common Stock during the first six months of fiscal 2023.