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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Schedule Of Reconciliation Of Beginning And Ending Amount Of Unrecognized Tax Benefits

			September 30,				September 30,				September 30,
		2011				2010				2009
Beginning of year		$	2,483,000			$	2,411,000			$	2,435,000
Additions based on tax positions related to the current year			1,105,000				900,000				465,000
Additions for tax positions in prior years			208,000				76,000				143,000
Reductions for tax positions in prior years			(78,000	)			(35,000	)			0
Reductions as a result of completed audit examinations			(1,242,000	)			0				0
Reductions as a result of a lapse of the applicable statute of limitations			0				(869,000	)			(632,000	)
End of year		$	2,476,000			$	2,483,000			$	2,411,000

Schedule Of Components Of Provision For Income Taxes

			September 30,				September 30,				September 30,
		2011				2010				2009
Currently payable:
Federal		$	63,307,583			$	54,032,045			$	31,377,218
State			1,663,000				789,000				896,000
Foreign			850,000				494,000				131,000
Total			65,820,583				55,315,045				32,404,218
Net deferred:
Primarily federal			13,943,000				10,391,000				(689,000	)
Provision for income taxes		$	79,763,583			$	65,706,045			$	31,715,218

Schedule Of Effective Income Tax Rates Different From Statutory Federal Income Tax Rates

			September 30,				September 30,				September 30,
		2011				2010				2009
Statutory federal income tax rate			35.0	%			35.0	%			35.0	%
State income taxes, net of federal income tax benefit			0.1				0.2				0.3
Domestic production exclusion			(2.3	)			(2.5	)			(2.0	)
Tax-exempt investment income			(0.0	)			(0.0	)			(0.1	)
Other			(0.2	)			(0.4	)			(0.3	)
Effective income tax rate			32.6	%			32.3	%			32.9	%

Schedule Of Deferred Income Tax Assets And Liabilities

			September 30,				September 30,				September 30,				September 30,
		2011								2010
		Current				Non-Current				Current				Non-Current
Assets:
Accruals not currently deductible		$	2,465,349			$	152,716			$	2,392,419			$	98,803
Stock based compensation			8,730,729				1,473,236				6,545,483				1,436,877
Impairment loss on available-for-sale securities							471,401								1,948,036
Capital loss
Other			4,874,704				3,809				4,107,951				1,897
Total deferred income tax assets			16,070,782				2,101,162				13,045,853				3,485,613
Liabilities:
Excess tax over book depreciation							(41,681,342	)							(25,849,074	)
Patent costs							(5,606,595	)							(2,996,184	)
Unrealized gain on investments							(3,027,206	)							(11,711,539	)
Other			(327,490	)							(607,627	)
Net deferred income taxes		$	15,743,292			$	(48,213,981	)		$	12,438,226			$	(37,071,184	)

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Tabular disclosure of the change in unrecognized tax benefits.

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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