Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax liabilities:
Plant, property and equipment	$ 1,022,898	$ 847,162
Total	1,022,898	847,162
Deferred income tax assets:
Asset valuations	604,755	575,920
Pension	81,561	105,647
Other	287,115	278,948
Total	973,431	960,515
Net deferred income tax (liability) asset:	$ (49,467)
Net deferred income tax (liability) asset:		$ 113,353