Inventories (Schedule of Inventories) (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 122,534,856	$ 115,099,569
Work-in-process	33,896,522	32,509,368
Finished goods	40,656,873	41,702,500
Total Inventory	$ 197,088,251	$ 189,311,437	[1]

[1] Note: The condensed consolidated balance sheet at December 31, 2016 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.