8. Long-Term Debt (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Total debt	$ 1,733,190	$ 1,786,114
Less current portion	(705,460)	(546,988)
Noncurrent portion	1,027,730	1,239,126
Zeo Inc. [Member]
Total debt	100,000	0
First Security Bank [Member]
Total debt	0	8,054
Catepillar Finance [Member]
Total debt	14,022	27,096
Catepillar Finance [Member]
Total debt	34,390	40,278
De Lage Landen Financial Services [Member]
Total debt	5,851	13,344
De Lage Landen Financial Services [Member]
Total debt	8,371	15,776
PhyllisRice [Member]
Total debt	12,146	14,146
SoyatalMine [Member]
Total debt	639,747	715,709
Guadalupe Mine [Member]
Total debt	$ 918,663	$ 951,711

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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