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Note 8 - Debts and Commitments (Details Textual)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Nov. 30, 2015 USD ($) ft² a	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2013 USD ($)
Payments to Acquire Property, Plant, and Equipment, Total		$ 71,000		$ 168,000	$ 84,000
Loans Payable to Bank, Total		$ 1,770,000		$ 1,770,000
UTAH | Building [Member]
Area of Real Estate Property (Square Foot) | ft²	30,700
UTAH | Land [Member]
Area of Land (Acre) | a	3.6
UTAH | Land and Building [Member]
Payments to Acquire Property, Plant, and Equipment, Total	$ 1,240,000
Margin Account [Member]
Proceeds from Issuance of Debt						$ 29,500,000
Margin Account [Member] | Fed Funds Rate [Member]
Debt Instrument, Basis Spread on Variable Rate						0.50%
Debt Instrument, Interest Rate, Effective Percentage		0.75%		0.75%
Real Estate Bank Loan Secured by Logan Office [Member]
Loans Payable to Bank, Total	$ 2,260,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.66%
Debt Instrument, Periodic Payment, Total	$ 17,600

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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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Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

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