Contractual interest rate for funds borrowed, under the debt agreement.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Note 9 - Note Payable (Details Textual) - USD ($)	1 Months Ended		6 Months Ended
Note 9 - Note Payable (Details Textual) - USD ($)	Jul. 31, 2020	Mar. 31, 2020	Jul. 02, 2022	Dec. 25, 2021
Property, Plant and Equipment, Gross, Ending Balance			$ 12,251,950	$ 12,114,418
Interest Expense, Debt, Total			$ 4,353
Microscope Note Payable [Member]
Debt Instrument, Term (Year)		5 years
Debt Instrument, Periodic Payment, Total		$ 4,000
Debt Instrument, Interest Rate, Stated Percentage		6.47%
Machine Vendor Financing [Member]
Debt Instrument, Term (Year)	2 years
Debt Instrument, Periodic Payment, Total	$ 2,000
Debt Instrument, Interest Rate, Stated Percentage	1.90%
Notes Payable, Total	$ 40,000
Sonoscan Ultrasound Microscope [Member]
Property, Plant and Equipment, Gross, Ending Balance		$ 208,000