Unaudited Condensed Consolidated Statements of Income - USD ($)		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
NET SALES		$ 483,724,839	$ 453,761,726
COST OF GOODS SOLD		300,424,671	297,174,245
Gross profit		183,300,168	156,587,481
OPERATING EXPENSES:
Engineering, research and development		27,652,081	29,615,422
Selling, general & administrative		21,914,386	21,944,892
Total operating expenses		49,566,467	51,560,314
Income from operations		133,733,701	105,027,167
OTHER INCOME
Investment income		1,023,410	2,446,649
Other income, net		509,625	(199,167)
Total other income		1,533,035	2,247,482
INCOME BEFORE PROVISION FOR INCOME TAXES		135,266,736	107,274,649
PROVISION FOR INCOME TAXES		21,815,866	17,768,848
NET INCOME		$ 113,450,870	$ 89,505,801
EARNINGS PER SHARE:
Basic (in dollars per share)	[1]	$ 0.47	$ 0.36
Diluted (in dollars per share)	[1]	0.46	0.36
Cash Dividends Declared per Share (in dollars per share)		$ 0.12	$ 0.12

[1] (1) Earnings Per Share has been adjusted to exclude the portion of net income allocated to participating securities as a result of share-based payment awards.