Inventories (Schedule of Inventories) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 160,099,367	$ 151,688,455
Work-in-process	30,301,068	32,791,675
Finished goods	42,659,872	41,811,713
Total Inventory	$ 233,060,307	$ 226,291,843	[1]

[1] The condensed consolidated balance sheet at December 31, 2020 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.