Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 397,105,404	$ 348,349,773
Short-term investments	59,145,338	86,447,596
Accounts receivable, net	130,039,210	95,647,612
Inventories	151,130,845	100,728,730
Prepaid expenses and other	20,781,773	24,095,563
Total current assets	758,202,570	655,269,274
PLANT AND EQUIPMENT- NET	256,562,323	205,107,756
OTHER ASSETS
Long-term investments	106,915,898	129,091,167
Patents and other assets, net	12,862,670	13,222,442
Total other assets	119,778,568	142,313,609
Total assets	1,134,543,461	1,002,690,639
LIABILITIES AND SHAREHOLDERS' INVESTMENT
Accounts payable	70,157,597	40,295,464
Accrued liabilities	46,590,486	31,793,165
Total current liabilities	116,748,083	72,088,629
DEFERRED INCOME TAXES	34,176,761	37,071,184
SHAREHOLDERS' INVESTMENT
Common stock	8,608,344	8,537,528
Additional paid-in capital	379,763,990	347,834,218
Retained earnings	587,524,488	514,842,177
Other shareholders' investment	7,721,795	22,316,903
Total shareholders' investment	983,618,617	893,530,826
Total liabilities and shareholders' investment	$ 1,134,543,461	$ 1,002,690,639