Fair Value of Financial Instruments (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Financial assets:
Inventory	$ 68,559,834	$ 44,107,212
Margin deposits (deficits)	(557,593)	0
Margin deposits	0	6,772,160
Fair Value, Inputs, Level 1
Financial assets:
Inventory	(4,034,113)	(5,610,521)
Margin deposits (deficits)	(557,593)
Margin deposits		6,772,160
Fair Value, Inputs, Level 2
Financial assets:
Inventory	72,593,947	49,717,733
Margin deposits (deficits)	0
Margin deposits		0
Fair Value, Inputs, Level 3
Financial assets:
Inventory	0	0
Margin deposits (deficits)	$ 0
Margin deposits		$ 0