RELATED-PARTY TRANSACTIONS - Related Party Purchases (Details) - Affiliated Entity - USD ($) |
12 Months Ended | |
---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
Related Party Transaction [Line Items] | ||
Coal purchases from related party | $ 1,098,328 | $ 0 |
Fuel Service and Beneficial Use Agreement ("FBUA") | Northampton Fuel Supply Company, Inc. | ||
Related Party Transaction [Line Items] | ||
Coal purchases from related party | 163,412 | 0 |
Waste Coal Agreement (the “WCA”) | Coal Valley Sales, LLC | ||
Related Party Transaction [Line Items] | ||
Coal purchases from related party | $ 934,916 | $ 0 |