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LONG-TERM DEBT (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Long-term debt |  |
Long-term debt | $ 2,638,994 | $ 3,046,008
Current portion of long-term debt | 260,939 | 406,361
Long-term debt, net of current maturities | 2,378,055 | 2,639,647
American First National Bank |  |
Long-term debt |  |
Original principal amount | $ 4,209,608 | $ 4,209,608
Prime rate (as a percent) | 0.25% | 0.25%
Interest rate (as a percent) | 0.00% |
Long-term debt | $ 2,638,994 | $ 2,878,980
Deutsche Leasing USA, Inc |  |
Long-term debt |  |
Renewal term |  | 36 months
Original principal amount |  | $ 525,017
Interest rate (as a percent) |  | 4.25%
Long-term debt |  | $ 167,028
Principal and interest repayment |  | $ 15,500

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