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Area of land held.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Note 10 - Debt and Commitments (Details Textual)	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
Note 10 - Debt and Commitments (Details Textual)	Apr. 30, 2022 USD ($) ft²	Nov. 30, 2015 USD ($) ft² a	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2022 USD ($)
Investment Margin Account			$ 81,000,000		$ 81,000,000			$ 75,000,000
Payments to Acquire Property, Plant, and Equipment			38,000	$ 3,000	74,000	$ 3,000
Deferred Compensation Liability, Current and Noncurrent			67,000		67,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Area of Real Estate Property \| ft²	17,564
Proceeds from Sale, Land, Held-for-Use	$ 381,000
UTAH \| Building [Member]
Area of Real Estate Property \| ft²		30,700
UTAH \| Land [Member]
Area of Land \| a		3.6
Payments to Acquire Property, Plant, and Equipment		$ 1,240,000
Margin Account [Member]
Proceeds from Issuance of Debt					51,500,000		$ 29,500,000
Investment Margin Account			$ 81,000,000		$ 81,000,000
Debt Instrument, Interest Rate, Effective Percentage			5.25%		5.25%
Margin Account [Member] \| Fed Funds Rate [Member]
Debt Instrument, Basis Spread on Variable Rate					0.50%
Real Estate Bank Loan Secured by Logan Office [Member]
Loans Payable to Bank		$ 2,260,000	$ 1,350,000		$ 1,350,000
Long-Term Debt, Percentage Bearing Fixed Interest, Percentage Rate		3.33%
Debt Instrument, Periodic Payment					$ 16,600