COMMODITY DERIVATIVE INSTRUMENTS - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gain on commodity derivative contracts	$ 57,016		$ 4,484,798
Loss on commodity derivative contracts		$ 310,011		$ 1,069,778