Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deferred income tax liabilities:
Plant, property and equipment	$ 1,556,398	$ 1,022,898
Total	1,556,398	1,022,898
Deferred income tax assets:
Asset valuations	992,101	604,755
Pension		81,561
Other	454,076	287,298
Total	1,446,177	973,614
Net deferred income tax liability:	$ 110,221	$ 49,284