Summary Of Significant Accounting And Reporting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Dec. 31, 2010

Summary Of Significant Accounting And Reporting Policies [Abstract]

Schedule Of Allowance For Doubtful Accounts

		September 30,		September 30,			September 30,			September 30,
	Beginning Balance		Net  Additions/ (Reductions) to Costs and Expenses			Deductions* and Other Adjustments			Ending Balance
Year Ended December 31, 2011:
Allowance for Doubtful Accounts	$	4,300,000	$	(802,929	)	$	(97,071	)	$	3,400,000
Year Ended December 31, 2010:
Allowance for Doubtful Accounts	$	4,500,000	$	(96,236	)	$	(103,764	)	$	4,300,000

Schedule Of Assets Or Liabilities Having Recurring Measurements

		September 30,		September 30,		September 30,		September 30,
			Fair Value Measurements at Reporting Date Using
	Total as of		Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	December 31, 2011		(Level I)		(Level 2)		(Level 3)
Cash & Cash Equivalents	$	357,986,774	$	357,986,774	$	—	$	—
Short-Term Investments:
Government Securities		35,024,030		35,024,030		—		—
U.S. Treasury Notes		25,044,000		—		25,044,000		—
Corporate Bonds		649,204		—		649,204
Other		91,003		91,003		—		—
Long-Term Investments:
Common Stocks		53,554,303		53,554,303		—		—
Mutual Funds – Equity		73,749,772		73,749,772		—		—
Certificate of Deposit		505,390		—		505,390		—
Other – Equity		358,700		358,700		—		—
Total	$	546,963,176	$	520,764,582	$	26,198,594	$	—

		September 30,		September 30,		September 30,		September 30,
			Fair Value Measurements at Reporting Date Using
	Total as of		Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	December 31, 2010		(Level I)		(Level 2)		(Level 3)
Cash & Cash Equivalents	$	348,349,773	$	348,349,773	$	—	$	—
Short-Term Investments:
Government Securities		36,136,760		36,136,760		—		—
U.S. Treasury Notes		50,156,250		—		50,156,250		—
Other		154,586		154,586		—		—
Long-Term Investments:
Common Stocks		63,637,711		63,637,711		—		—
Mutual Funds – Equity		55,234,901		55,234,901		—		—
Limited Partnership – Equity		9,363,555		—		9,363,555		—
Certificate of Deposit		500,000		—		500,000		—
Other – Equity		355,000		355,000		—		—
Total	$	563,888,536	$	503,868,731	$	60,019,805	$	—

Schedule Of Amortized Cost, Unrealized Gains And Losses, And Market Value Of Investment Securities

		September 30,		September 30,		September 30,			September 30,
	Unrealized
2011	Cost		Gains		Losses			Market Value
Short-Term Investments:
Government Securities	$	35,016,980	$	7,090	$	(40	)	$	35,024,030
U.S. Treasury Notes		25,025,600		18,400		—			25,044,000
Corporate Bonds		648,879		325		—			649,204
Other		91,003		—		—			91,003
Long-Term Investments:
Common Stocks		42,344,526		12,274,640		(1,064,863	)		53,554,303
Mutual Funds-Equity		68,986,676		6,277,183		(1,514,087	)		73,749,772
Certificate of Deposit		505,390		—		—			505,390
Other-Equity		338,506		20,194		—			358,700
Total	$	172,957,560	$	18,597,832	$	(2,578,990	)	$	188,976,402

		September 30,		September 30,		September 30,			September 30,
	Unrealized
2010	Cost		Gains		Losses			Market Value
Short-Term Investments:
Government Securities	$	36,137,467	$	9,254	$	(9,961	)	$	36,136,760
U.S. Treasury Notes		50,095,921		60,329		—			50,156,250
Other		154,586		—		—			154,586
Long-Term Investments:
Common Stocks		44,899,944		18,819,518		(81,751	)		63,637,711
Mutual Funds-Equity		42,106,776		13,128,125		—			55,234,901
Limited Partnership-Equity		7,844,022		1,519,533		—			9,363,555
Certificate of Deposit		500,000		—		—			500,000
Other-Equity		338,506		16,494		—			355,000
Total	$	182,077,222	$	33,553,253	$	(91,712	)	$	215,538,763

Schedule Of Unrealized Losses On Investments

		September 30,		September 30,
	Aggregate Unrealized Losses		Aggregate Fair Value
Less than one year	$	2,578,990	$	42,845,635
Greater than one year		—		—

		September 30,		September 30,
	Aggregate Unrealized Losses		Aggregate Fair Value
Less than one year	$	91,712	$	17,007,886
Greater than one year		—		—

Schedule Of Contractual Maturities Of Fixed Income Securities

		September 30,
Due within one year	$	60,808,237
Due between one and five years		505,390
Due over five years		—
	$	61,313,627

Schedule Of Inventories

		September 30,		September 30,
	2011		2010
Raw materials	$	129,796,238	$	62,857,800
Work-in-process		26,367,953		13,055,237
Finished goods		32,589,121		24,815,693
	$	188,753,312	$	100,728,730

Schedule Of Earnings Per Share Basic And Diluted

		September 30,		September 30,		September 30,
	2011		2010		2009
Numerators:
Numerator for both basic and diluted EPS, net income	$	164,668,228	$	137,733,969	$	64,637,085
Denominators:
Denominator for basic EPS, weighted-average common shares outstanding		142,492,699		139,356,831		137,227,677
Potentially dilutive shares resulting from stock option plans		1,784,109		1,378,936		417,673
Denominator for diluted EPS		144,276,808		140,735,767		137,645,350