Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes

Schedule Of Total Income Tax Expense

		2012		2011		2010
Income from continuing operations		$	42,627	$	35,254	$	32,991
Discontinued operations			1,311		2,751		207
Shareholders’ equity			(1,581)		(649)		(71)
Other comprehensive income			-		332		860
	Total	$	42,357	$	37,688	$	33,987

Schedule of Components of Income Tax Expense (Benefit)

		2012		2011		2010
Current:
	Federal	$	15,313	$	11,643	$	10,959
	State		4,971		3,534		3,263
Deferred:
	Federal		19,135		17,693		16,422
	State		3,208		2,384		2,347
	Income tax expense	$	42,627	$	35,254	$	32,991

Schedule of Effective Income Tax Rate Reconciliation

		2012		2011		2010
Statutory federal income tax		$	92,741	$	78,514	$	73,397
Less federal income tax assumed directly by noncontrolling interests			(55,916)		(48,607)		(44,351)
State income taxes, net of federal income tax benefit			5,309		3,629		3,470
Increase in valuation allowances			419		1,622		441
Interest related to unrecognized tax benefits			(109)		(83)		(151)
Other			183		179		185
	Income tax expense	$	42,627	$	35,254	$	32,991

Summary of Income Tax Contingencies

		2012		2011		2010
Balance at beginning of year		$	7,252	$	7,144	$	6,766
Additions for tax positions of current year			119		342		378
Increases (decreases) for tax positions taken during a prior period			1,985		(190)		-
Lapse of statute of limitations			(121)		(44)		-
	Balance at end of year	$	9,235	$	7,252	$	7,144

Schedule of Deferred Tax Assets and Liabilities

			2012		2011
Deferred tax assets:
	Allowance for uncollectible accounts		$	884	$	841
	Accrued assets and other			5,212		3,562
	Valuation allowances			(2,084)		(1,491)
		Total current deferred tax assets		4,012		2,912
	Share-based compensation			9,500		9,138
	Interest on unrecognized tax benefits			363		456
	Accrued liabilities and other			3,077		2,951
	Operating and capital loss carryforwards			9,169		7,624
	Valuation allowances			(7,265)		(6,133)
		Total non-current deferred tax assets		14,844		14,036
		Total deferred tax assets		18,856		16,948
Deferred tax liabilities:
	Prepaid expenses			925		783
	Property and equipment, principally due to differences in depreciation			3,997		4,143
	Goodwill, principally due to differences in amortization			148,494		124,060
		Total deferred tax liabilities		153,416		128,986
		Net deferred tax liabilities	$	134,560	$	112,038

Schedule Of Deferred Tax Assets And Liabilities, Net [Table Text Block]

		2012		2011
Current deferred income tax assets		$	3,088	$	2,129
Non-current deferred income tax liabilities			137,648		114,167
	Net deferred tax liabilities	$	134,560	$	112,038