LINE OF CREDIT AND LONG-TERM DEBT - Outstanding Debt Facilities (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Long-term Debt
Long-term debt	$ 8,703,705	$ 13,923,954
Term Loan | Encina Business Credit, LLC
Long-term Debt
Loan Amount	20,000,000
Long-term debt	4,983,000	5,433,000
Term Loan | John Deere Note
Long-term Debt
Loan Amount	152,643
Long-term debt	112,768	131,303
Revolving Note | Encina Business Credit SPV, LLC
Long-term Debt
Loan Amount	10,000,000
Long-term debt	1,165,183	133,446
Capex Loan | Encina Business Credit, LLC
Long-term Debt
Loan Amount	2,000,000
Long-term debt	1,194,386	1,378,819
Finance Lease | AVT Equipment Lease-Ohio
Long-term Debt
Loan Amount	466,030
Finance lease obligation	318,689	380,829
Finance Lease | AVT Equipment Lease-HH
Long-term Debt
Loan Amount	551,609
Finance lease obligation	377,933	450,564
Finance Lease | Wells Fargo Equipment Lease-Ohio
Long-term Debt
Loan Amount	621,000
Finance lease obligation	376,738	436,411
Finance Lease | Tetra Capital Lease
Long-term Debt
Loan Amount	419,690
Finance lease obligation	116,308	172,235
Finance Lease | Well Fargo Equipment Lease-VRM LA
Long-term Debt
Loan Amount	30,408
Finance lease obligation	0	1,804
SBA Loan | Loan-Leverage Lubricants
Long-term Debt
Loan Amount	58,700
Long-term debt	58,700	0
PPP Loan | Texas Citizens Bank
Long-term Debt
Loan Amount	4,222,000
Long-term debt	0	4,222,000
Insurance premiums financed | Various institutions
Long-term Debt
Loan Amount	2,902,428
Long-term debt	$ 0	$ 1,183,543