The maximum debt to worth ratio that is required to maintain pursuant to the debt agreement.

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- Definition

The minimum debt service coverage ratio that is required to maintain pursuant to the debt agreement.

+ References

No definition available.

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The tolerance of minimum debt service coverage ratio that is required to maintain pursuant to the debt agreement.

+ References

No definition available.

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The minimum percentage of tangible balance sheet equity that is required to maintain pursuant to the debt agreement.

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No definition available.

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- Definition

The amount of minimum working capital that is required to maintain pursuant to the debt agreement.

+ References

No definition available.

+ Details

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The minimum working capital ratio that is required to maintain pursuant the debt agreement.

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No definition available.

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- Definition

The percentage of the unpaid balance that paid annually.

+ References

No definition available.

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- Definition

The ownership percentage of shareholders who are required to personally guarantee a portion of the loan pursuant to the guarantee agreement.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

The borrowing base for a line of credit, valued as a percentage of the balance of accounts receivable.

+ References

No definition available.

+ Details

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- Definition

The borrowing base for a line of credit, as a percentage of inventory balance.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The percentage of guaranteed amount that paid.

+ References

No definition available.

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- Definition

The percentage of loan that is personally guaranteed by a shareholder.

+ References

No definition available.

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- Definition

The cash outflow for the interest of long-term debt.

+ References

No definition available.

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- Definition

The cash outflow for the principal portion of long-term debt.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The amount of guarantee fee paid upfront.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

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

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

+ References

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The effective interest rate during the reporting period.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Note 10 - Loan and Credit Agreements (Details Textual)					6 Months Ended		12 Months Ended
Note 10 - Loan and Credit Agreements (Details Textual)	May 31, 2019 USD ($)	Feb. 13, 2019 USD ($)	Mar. 29, 2018 USD ($)	Sep. 28, 2017 USD ($)	May 31, 2019 USD ($)	May 31, 2018 USD ($)	Nov. 30, 2018 USD ($)	Feb. 28, 2019	May 01, 2010 USD ($)
Long-term Debt, Total	$ 2,476,752				$ 2,476,752		$ 2,750,477
Repayments of Long-term Debt, Total					273,725	$ 109,295
Term Loan Due October 2037 [Member]
Long-term Debt, Total	$ 2,476,752				$ 2,476,752		$ 2,517,510
Debt Instrument, Interest Rate, Stated Percentage	5.00%				5.00%		5.00%
Debt Instrument, Periodic Payment, Total					$ 17,271		$ 17,271
Iowa Finance Authority Term Loan [Member]
Long-term Debt, Total							$ 232,967
Debt Instrument, Interest Rate, Stated Percentage	2.75%				2.75%		2.75%
Debt Instrument, Periodic Payment, Total					$ 12,500		$ 12,500
Bank Midwest [Member]
Long-term Line of Credit, Total	$ 3,599,530				3,599,530
Line of Credit Facility, Remaining Borrowing Capacity	$ 1,400,470				$ 1,400,470
Line of Credit, Borrowing Base, Accounts Receivable	75.00%				75.00%
Line of Credit, Borrowing Base, Inventory	50.00%				50.00%
Debt Instrument, Covenant, Minimum Working Capital Ratio				1.75
Debt Instrument, Covenant, Minimum Working Capital				$ 5,100,000
Debt Instrument, Covenant, Maximum Debt to Worth Ratio				1
Debt Instrument, Covenant, Minimum Tangible Balance Sheet Equity, Percentage				40.00%
Debt Instrument, Covenant, Minimum Debt Service Coverage Ratio				1.25
Debt Instrument, Covenant, Minimum Debt Service Coverage Ratio, Tolerance				0.1
Bank Midwest [Member] \| Term Loan Due October 2037 [Member]
Long-term Debt, Total				$ 2,600,000
Debt Instrument, Periodic Payment, Total	$ 17,271
Bank Midwest [Member] \| Term Loan Due October 2037 [Member] \| United States Department of Agriculture [Member]
Upfront Guarantee Fee	$ 62,400
Guarantee Fee, Annual Fee, Percentage	0.50%
Guarantee Requirement, Personally Guarantee, Shareholders Ownership Percentage	20.00%
Bank Midwest [Member] \| Term Loan Due October 2037 [Member] \| J. Ward McConnell Jr. [Member]
Personally Guaranteed, Percentage of Loan	38.00%
Personally Guaranteed, Fee, Percentage of Guaranteed Amount	2.00%
Bank Midwest [Member] \| Term Loan Due October 2019 [Member]
Long-term Debt, Total				600,000
Repayments of Long-term Debt, Total			$ 600,000
Repayments of Long-term Debt, Principal			596,563
Repayments of Long-term Debt, Interest			$ 2,328
Bank Midwest [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 5,000,000
Debt Instrument, Basis Spread on Variable Rate		1.00%
Line of Credit Facility, Interest Rate During Period	6.50%
Debt Instrument, Interest Rate, Effective Percentage		4.25%
Bank Midwest [Member] \| Revolving Credit Facility [Member] \| Wall Street Journal Rate [Member]
Long-term Line of Credit, Total		$ 4,000,000
Debt Instrument, Basis Spread on Variable Rate	1.00%
Line of Credit Facility, Interest Rate During Period	4.25%
Debt Instrument, Interest Rate, Effective Percentage		6.50%
Bank Midwest [Member] \| Term Loan Due October 2037 [Member]
Debt Instrument, Interest Rate, Stated Percentage								5.00%
Bank Midwest [Member] \| Term Loan Due October 2037 [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Effective Percentage	4.15%				4.15%
Bank Midwest [Member] \| Term Loan Due October 2037 [Member] \| Wall Street Journal Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.75%
The First National Bank of West Union [Member] \| Iowa Finance Authority Term Loan [Member]
Debt Instrument, Face Amount									$ 1,300,000