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Summary of Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Summary of Goodwill and Acquired Intangible Assets [Abstract]

Summary change in the carrying amount of goodwill


	January 1, 2010			Additions⁽¹⁾		Disposals/ Impairments		December 31, 2010
Goodwill	$	258,155		$	11,220	$	—	$	269,375
Accumulated impairment losses		(8,879	)		—		—		(8,879	)

Total	$	249,276		$	11,220	$	—	$	260,496

(1)	Goodwill associated with the acquisition of the Medicaid contract rights and rights under certain provider agreements of UHP on March 1, 2010.

Summary of other acquired intangible assets subject to amortization


	2011					2010
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Membership rights and provider contracts	$	28,171	$	(26,594	)	$	28,171	$	(26,106	)
Non-compete agreements and trademarks		946		(946	)		946		(946	)

	$	29,117	$	(27,540	)	$	29,117	$	(27,052	)

Summary of estimated aggregate amortization expenses for the five succeeding years


	Estimated Amortization Expense
2012	$	365
2013		284
2014		225
2015		150
2016		120

- Definition

Tabular disclosure of amortizable intangibles assets, in total and by major class, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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- Definition

Tabular disclosure of goodwill by reportable segment and in total. Disclosure details may include, but are not limited to, the carrying amount of goodwill, goodwill acquired during the year, goodwill impairment losses recognized, goodwill written-off due to the sale of a business unit, goodwill not yet allocated, and any other changes to goodwill.

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