Derivative Instruments (Details Textual) lb in Millions, gal in Millions, BTU in Millions	9 Months Ended
	Sep. 30, 2020 BTU lb gal
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Heating oil covered under the open commodity derivative contracts (in gallons) | gal	43
Soybean oil covered under the open commodity derivative contracts (in pounds) | lb	51
Natural gas covered under the open commodity derivative contracts (in BTUs) | BTU	2