Unaudited Condensed Consolidated Statements of Income - USD ($)		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
NET SALES		$ 453,761,726	$ 468,588,997
COST OF GOODS SOLD		297,174,245	298,944,494
Gross profit		156,587,481	169,644,503
OPERATING EXPENSES:
Engineering, research and development		29,615,422	28,089,181
Selling, general & administrative		21,944,892	19,958,991
Total operating expenses		51,560,314	48,048,172
Income from operations		105,027,167	121,596,331
OTHER INCOME (LOSS)
Investment income		2,446,649	3,262,741
Other income (loss), net		(199,167)	49,469
Total other income		2,247,482	3,312,210
INCOME BEFORE PROVISION FOR INCOME TAXES		107,274,649	124,908,541
PROVISION FOR INCOME TAXES		17,768,848	20,628,130
NET INCOME		$ 89,505,801	$ 104,280,411
EARNINGS PER SHARE:
Basic (in dollars per share)	[1]	$ 0.36	$ 0.40
Diluted (in dollars per share)	[1]	0.36	0.40
Cash Dividends Declared per Share (in dollars per share)		$ 0.12	$ 0.115

[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.