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Note O - Supplemental Cash Flow Information (Details Textual) - USD ($) |  | 3 Months Ended
--- | --- | ---
Apr. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Interest Paid, Including Capitalized Interest, Operating and Investing Activities |  | $ 500,000 | $ 400,000
Income Taxes Paid, Net |  | $ 47,000 | $ 40,000
Plateplus Inc. [Member] |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | 516,041 |  | 516,041
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  | $ 4,784,000

X
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-2 + Details
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- Definition Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-2 + Details
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