General (Tables)

9 Months Ended

Sep. 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	$	189,949		$	131,633
	Customer B	June 30, 2014		54,822			50,089
	Customer C	June 30, 2012 to November 30, 2013(1)		40,303	*		82,695
Public Sector
	Customer D	June 30, 2012(2)		113,540			135,597
Radiology Benefits Management
	WellPoint, Inc.	December 31, 2010(3)		119,155			—
	Customer E	November 30, 2012 to April 30, 2013(1)		84,435			100,575
	Customer F	June 30, 2011 to November 30, 2011(1)(4)		50,982			34,271
	Customer G	June 30, 2014		40,203			40,928
	Customer H	March 31, 2013		4,057	*		25,708
Specialty Pharmaceutical Management
	Customer I	November 30, 2011 to March 31, 2012(1)		65,421			64,731
	Customer J	September 1, 2011 to April 29, 2012(1)		43,246			41,704
	Customer E	February 1, 2012 to April 30, 2013(1)		26,937			19,499	*
Medicaid Administration
	Customer K	December 4, 2011(4)		23,531			22,193
	Customer L	September 30, 2013(5)		6,647	*		61,543
	Customer M	September 30, 2011 to June 30, 2017(1)		17,905			18,635
	Customer N	August 31, 2011 to June 30, 2013(1)		16,357			13,689	*
	Customer O	June 30, 2013 to September 30, 2014(1)		12,097			17,221

*

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)

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)		$	—	$	7,732	$	—	$	7,732
Restricted Cash(5)			—		32,524		—		32,524
Investments:
U.S. Government and agency securities			698		—		—		698
Obligations of government-sponsored enterprises(6)			—		11,161		—		11,161
Corporate debt securities			—		242,090		—		242,090
Certificates of deposit			—		200		—		200
	September 30, 2011	$	698	$	293,707	$	—	$	294,405

(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 $134.7 million of cash held in bank accounts by the Company.

(5)

Excludes $123.1 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

	September 30, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. Government and agency securities	$	698	$	—	$	—		$	698
Obligations of government-sponsored enterprises(2)		11,160		4		(3	)		11,161
Corporate debt securities		242,569		53		(532	)		242,090
Certificates of deposit		200		—		—			200
Total investments at September 30, 2011	$	254,627	$	57	$	(535	)	$	254,149

(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

The maturity dates of the Company's investments as of September 30, 2011 are summarized below (in thousands):

	Amortized Cost		Estimated Fair Value
2011	$	92,150	$	92,062
2012		159,009		158,644
2013		3,468		3,443
Total investments at September 30, 2011	$	254,627	$	254,149

Schedule of stock option activity

	Options			Weighted Average Exercise Price
Outstanding, beginning of period		3,775,586		$	39.27
Granted		1,120,716			49.25
Forfeited		(29,306	)		42.98
Exercised		(881,362	)		38.35
Outstanding, end of period		3,985,634			42.26
Vested and expected to vest, end of period		3,891,114			42.16
Exercisable, end of period		1,835,319		$	39.84

Schedule of nonvested restricted stock award activity

	Shares			Weighted Average Grant Fair Value
Outstanding, beginning of period		22,309		$	39.23
Awarded		18,748			52.11
Vested		(22,309	)		39.23
Forfeited		—			—
Outstanding, ending of period		18,748		$	52.11

Schedule of nonvested restricted stock units

	Shares			Weighted Average Grant Fair Value
Outstanding, beginning of period		190,488		$	38.43
Awarded		112,543			49.10
Vested		(90,853	)		37.50
Forfeited		(2,856	)		45.12
Outstanding, ending of period		209,322		$	44.49