NOTES PAYABLE AND FINANCING TRANSACTIONS (Narrative) (Details) - Minnesota Bank & Trust [Member] - USD ($)	Nov. 06, 2020	Dec. 31, 2020
Property Loan [Member]
Debt Instrument [Line Items]
Debt instrument, origination fee	$ 26,037
Debt instrument, maturity date	Nov. 01, 2030
Periodic payment of principal and interest	$ 30,000
Balloon payment	$ 3,100,000
Description of prepayment	Any prepayment of the Property Loan (other than monthly scheduled interest and principal payments), is subject to a prepayment fee equal to 4% of the principal amount prepaid for any prepayment made during the first or second year, 3% of the principal amount prepaid for any prepayment made during the third or fourth year, 2% of the principal amount prepaid for any prepayment made during the fifth or sixth year, and 1% of the principal amount prepaid for any prepayment made during the seventh or eighth year.
Debt instrument, face amount	$ 5,207,472
Interest rate	3.55%
Term Loan A [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 01, 2027
Periodic payment of principal and interest	$ 109,168
Debt instrument, face amount	7,525,000
Debt outstanding	$ 3,770,331	$ 3,700,000
Interest rate	3.84%
Term Loan B [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 01, 2027
Periodic payment of principal and interest	$ 14,507
Debt instrument, face amount	1,000,000
Debt outstanding	$ 0	$ 0
Interest rate	3.84%
Revolving Loan [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 05, 2021
Debt instrument, face amount	$ 2,000,000
Interest rate	3.25%

Balloon payment owed at maturity of debt instrument.

No definition available.

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- Definition

Amount of the origination fee that accompanies borrowing money under the debt instrument.

+ References

No definition available.

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- Definition

Description of prepayment.

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No definition available.

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- Definition

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

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- Definition

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

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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

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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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