Condensed Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Income
NET SALES	$ 243,001,541	$ 201,560,960	$ 493,947,438	$ 387,329,889
COST OF GOODS SOLD	157,376,970	127,667,134	318,006,130	244,867,694
Gross profit	85,624,571	73,893,826	175,941,308	142,462,195
OPERATING EXPENSES:
Engineering, research and development	20,245,757	15,222,622	39,160,518	29,561,140
Selling, general & administrative	12,131,922	9,884,445	23,443,024	19,506,399
Total operating expenses	32,377,679	25,107,067	62,603,542	49,067,539
Income from operations	53,246,892	48,786,759	113,337,766	93,394,656
OTHER INCOME (EXPENSE)
Investment income	598,455	556,004	1,098,025	1,068,887
Other, net	3,902,721	998,302	6,767,539	3,562,774
Total other income	4,501,176	1,554,306	7,865,564	4,631,661
Income before provision for income taxes	57,748,068	50,341,065	121,203,330	98,026,317
PROVISION FOR INCOME TAXES	19,275,899	16,283,735	40,398,279	31,506,857
NET INCOME	$ 38,472,169	$ 34,057,330	$ 80,805,051	$ 66,519,460
Earnings Per Share
Basic	$ 0.27	$ 0.24	$ 0.57	$ 0.48
Diluted	$ 0.27	$ 0.24	$ 0.56	$ 0.47
Cash Dividends Declared per Share	$ 0.12	$ 0.11	$ 0.24	$ 0.22