Note 7 - Stock-based Compensation	6 Months Ended
Sep. 30, 2021
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	NOTE 7. STOCK-BASED COMPENSATION Stock-based compensation expense was $56,999 for the second quarter of fiscal 2022, $34,315 for the second quarter of fiscal 2021, $64,237 for the first six months of fiscal 2022, and $37,022 for the first six months of fiscal 2021. We calculate the share-based compensation expense using the Black-Scholes standard option-pricing model.

The entire disclosure for share-based payment arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-URI http://asc.fasb.org/topic&trid=2228938

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