Note 7 - Short Term Deposits	3 Months Ended
Jun. 30, 2023
Notes to Financial Statements
Investment [Text Block]	NOTE 7 — SHORT TERM DEPOSITS As of June 30, 2023 and March 31, 2023, the Company held $22.9 million and $23.1 million, respectively, in term deposits. Such term deposits had maturity dates of 90 days or less and, as a result, were classified as cash equivalents.

The entire disclosure for investment.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//320/tableOfContent

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Topic 321
-Publisher FASB
-URI https://asc.fasb.org//321/tableOfContent

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Topic 325
-Publisher FASB
-URI https://asc.fasb.org//325/tableOfContent

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