General (Tables)

6 Months Ended

Jun. 30, 2011

General

Schedule of customers generating in excess of ten percent of net revenues for respective segment

Segment		Term Date	2010			2011
Commercial
	Customer A	December 31, 2012	$	126,875		$	91,606
	Customer B	June 30, 2014		36,833			33,402
	Customer C	June 30, 2012 to November 30, 2013(1)		23,317	*		54,796
Public Sector
	Customer D	June 30, 2012(2)		72,631			81,060
Radiology Benefits Management
	WellPoint, Inc.	December 31, 2010(3)		79,280			—
	Customer E	November 30, 2012 to April 30, 2013(1)		53,396			67,392
	Customer F	June 30, 2011 to November 30, 2011(1)(4)		34,384			30,934
	Customer G	June 30, 2014		25,933			26,720
Specialty Pharmaceutical Management
	Customer H	November 30, 2011 to March 31, 2012(1)		43,310			42,989
	Customer I	September 1, 2011 to April 29, 2012(1)		30,396			27,963
	Customer E	February 1, 2012 to April 30, 2013(1)		17,121			13,314	*
Medicaid Administration
	Customer J	September 30, 2012(5)		15,804			13,805
	Customer K	September 30, 2013(6)		—			40,774
	Customer L	September 30, 2011 to June 30, 2017(1)		11,530			12,466
	Customer M	August 31, 2011 to June 30, 2013(1)		10,888			8,680	*
	Customer N	June 30, 2010(3)		9,457			—
	Customer O	September 30, 2011 to December 31, 2013(1)		7,939			11,411

*

Revenue amount did not exceed ten percent of net revenues for the respective segment for the period presented. Amount is shown for comparative purposes only.

(1)

The customer has more than one contract. The individual contracts are scheduled to terminate at various points during the time period indicated above.

(2)

Contract has options for the customer to extend the term for three additional one-year periods.

(3)

The contract has terminated.

(4)

The customer has informed the Company that this contract will not be renewed.

(5)

The Company anticipates that this contract will terminate in the second half of 2011.

(6)

This customer represents a subcontract with a Public Sector customer and is eliminated in consolidation.

Schedule of fair value of financial assets and liabilities

		Fair Value Measurements
		Level 1		Level 2		Level 3		Total
Cash and Cash Equivalents(1)		$	—	$	68,726	$	—	$	68,726
Restricted Cash(2)			—		72,698		—		72,698
Investments:
U.S. Government and agency securities			2,179		—		—		2,179
Obligations of government-sponsored enterprises(3)			—		10,138		—		10,138
Corporate debt securities			—		268,769		—		268,769
Certificates of deposit			—		750		—		750
Taxable municipal bonds			—		2,668		—		2,668
	December 31, 2010	$	2,179	$	423,749	$	—	$	425,928

		Level 1		Level 2		Level 3		Total
Cash and Cash Equivalents(4)		$	—	$	13,518	$	—	$	13,518
Restricted Cash(5)			—		67,046		—		67,046
Investments:
U.S. Government and agency securities			681		—		—		681
Obligations of government-sponsored enterprises(6)			—		12,043		—		12,043
Corporate debt securities			—		327,202		—		327,202
Certificates of deposit			—		200		—		200
Taxable municipal bonds			—		2,620				2,620
	June 30, 2011	$	681	$	422,629	$	—	$	423,310

(1)

Excludes $268.5 million of cash held in bank accounts by the Company.

(2)

Excludes $44.0 million of restricted cash held in bank accounts by the Company.

(3)

Includes investments in notes issued by the Federal Home Loan Mortgage Corporation and the Federal Home Loan Bank.

(4)

Excludes $67.8 million of cash held in bank accounts by the Company.

(5)

Excludes $36.0 million of restricted cash held in bank accounts by the Company.

(6)

Includes investments in notes issued by the Federal Home Loan Bank.

Summary of short-term and long-term "available-for-sale" investments

	December 31, 2010
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. Government and agency securities	$	2,178	$	1	$	—		$	2,179
Obligations of government-sponsored enterprises(1)		10,142		7		(11	)		10,138
Corporate debt securities		268,739		245		(215	)		268,769
Certificates of deposit		750		—		—			750
Taxable municipal bonds		2,680		—		(12	)		2,668
Total investments at December 31, 2010	$	284,489	$	253	$	(238	)	$	284,504

	June 30, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. Government and agency securities	$	681	$	—	$	—		$	681
Obligations of government-sponsored enterprises(2)		12,037		7		(1	)		12,043
Corporate debt securities		327,067		306		(171	)		327,202
Certificates of deposit		200		—		—			200
Taxable municipal bonds		2,620		—		—			2,620
Total investments at June 30, 2011	$	342,605	$	313	$	(172	)	$	342,746

(1)

Includes investments in notes issued by the Federal Home Loan Mortgage Corporation and the Federal Home Loan Bank.

(2)

Includes investments in notes issued by the Federal Home Loan Bank.

Summary of maturity dates of investments

	Amortized Cost		Estimated Fair Value
2011	$	197,552	$	197,469
2012		145,053		145,277
Total investments at June 30, 2011	$	342,605	$	342,746

Schedule of stock option activity

	Options			Weighted Average Exercise Price
Outstanding, beginning of period		3,775,586		$	39.27
Granted		1,059,466			49.18
Forfeited		(17,292	)		41.87
Exercised		(722,048	)		38.62
Outstanding, end of period		4,095,712			41.94
Vested and expected to vest at end of period		3,984,049			41.83
Exercisable, end of period		1,915,435		$	39.80

Schedule of nonvested restricted stock award activity

	Shares			Weighted Average Grant Date Fair Value
Outstanding, beginning of period		22,309		$	39.23
Awarded		16,898			51.80
Vested		(22,309	)		39.23
Forfeited		—			—
Outstanding, ending of period		16,898		$	51.80

Schedule of nonvested restricted stock units

	Shares			Weighted Average Grant Date Fair Value
Outstanding, beginning of period		190,488		$	38.43
Awarded		112,543			49.10
Vested		(90,853	)		37.50
Forfeited		(1,674	)		42.31
Outstanding, ending of period		210,504		$	44.49