Unaudited Condensed Consolidated Statements of Income (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
NET SALES	$ 350,913,912	$ 288,621,626	$ 1,025,090,220	$ 845,094,493
COST OF GOODS SOLD	212,288,220	182,659,141	620,873,493	543,055,886
Gross profit	138,625,692	105,962,485	404,216,727	302,038,607
OPERATING EXPENSES:
Engineering, research and development	21,671,940	19,106,682	62,395,241	56,654,440
Selling, general & administrative	13,747,925	13,199,557	41,602,675	36,278,011
Total operating expenses	35,419,865	32,306,239	103,997,916	92,932,451
Income from operations	103,205,827	73,656,246	300,218,811	209,106,156
OTHER INCOME
Investment income	406,491	474,084	1,129,654	1,595,214
Other, net	380,289	6,912,924	9,958,235	13,224,735
Total other income	786,780	7,387,008	11,087,889	14,819,949
Income before provision for income taxes	103,992,607	81,043,254	311,306,700	223,926,105
PROVISION FOR INCOME TAXES	31,655,724	25,522,293	93,677,000	70,877,180
NET INCOME	$ 72,336,883	$ 55,520,961	$ 217,629,700	$ 153,048,925
EARNINGS PER SHARE:
Basic (in dollars per share)	$ 0.50	$ 0.39	$ 1.50	$ 1.07
Diluted (in dollars per share)	$ 0.49	$ 0.38	$ 1.49	$ 1.06
Cash Dividends Declared per Share (in dollars per share)	$ 0.16	$ 0.14	$ 0.46	$ 0.42