Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011


	December 31,
	2011		2010		2009
Federal:
Current	$	113,290	$	73,756	$	93,590
Deferred		7,486		22,814		6,391

		120,776		96,570		99,981

State:
Current		13,895		10,330		11,315
Deferred		577		1,561		600

		14,472		11,891		11,915

Total	$	135,248	$	108,461	$	111,896

Schedule Of Differences Between The Effective Rate And The United States Federal Income Tax Statutory Rate


	December 31,
	2011			2010			2009
Tax at statutory rate		35.00	%		35.00	%		35.00	%
State income tax, net of federal benefit		2.66			2.42			2.69
Non-deductible expenses		0.32			0.35			0.40
Change in accrual estimates relating to uncertain tax positions		0.44			(2.81	)		0.82
Other, net		(0.13	)		(0.10	)		(0.02	)

Income tax provision		38.29	%		34.86	%		38.89	%

Significant Components Of Deferred Income Tax Assets And Liabilities


	December 31, 2011									December 31, 2010
	Total			Current			Non- Current			Total			Current			Non- Current
Allowance for uncollectible accounts	$	47,459		$	47,459		$	—		$	34,254		$	34,254		$	—
Net operating loss carryforward		3,533			3,533			—			7,799			7,799			—
Reserves and accruals		40,807			36,828			3,979			37,045			33,378			3,667
Other		483			483			—			488			488			—
Stock-based compensation		18,657			10,586			8,071			18,316			8,700			9,616

Total deferred tax assets		110,939			98,889			12,050			97,902			84,619			13,283

Accrual to cash adjustment		(28,575	)		(28,575	)		—			(24,040	)		(24,040	)		—
Property and equipment		(128	)		—			(128	)		(965	)		—			(965	)
Amortization		(105,753	)		—			(105,753	)		(86,384	)		—			(86,384	)

Total deferred tax liabilities		(134,456	)		(28,575	)		(105,881	)		(111,389	)		(24,040	)		(87,349	)

Net deferred tax (liability) asset	$	(23,517	)	$	70,314		$	(93,831	)	$	(13,487	)	$	60,579		$	(74,066	)

Schedule Of Activity Related To Gross Unrecognized Tax Benefits


	Years Ended December 31,
	2011			2010			2009
Balance at beginning of year	$	22,290		$	49,416		$	47,562
Increases related to prior year tax positions		44			948			—
Decreases related to prior year tax positions		—			(9,569	)		(1,051	)
Increases related to current year tax positions		2,541			2,334			5,867
Decreases related to current year tax positions		(7,203	)		(19,035	)		—
Settlements		13			(500	)		(2,191	)
Decreases related to lapse of statutes of limitations		(1,520	)		(1,304	)		(771	)

Balance at end of year	$	16,165		$	22,290		$	49,416

- Definition

Tabular disclosure of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions.

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