General (Tables)

6 Months Ended

Jun. 30, 2012

General

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

Segment	Term Date	2011			2012
Commercial
Customer A	December 31, 2013	$	91,606		$	96,106
Customer B	June 30, 2014		33,402			32,137	*
Customer C	December 31, 2012 to December 14, 2013(1)		54,796			60,923
Customer D	December 31, 2019		—			67,381
Public Sector
Customer E	June 30, 2013(2)		81,060			111,259
Radiology Benefits Management
Customer F	December 31, 2015		67,392			53,405
Customer G	June 30, 2011 to November 30, 2011(1)(3)		30,934			—
Customer H	June 30, 2014		26,720			29,049
Customer I	March 31, 2013		16,157	*		28,092
Customer J	January 31, 2014		15,801	*		18,333
Specialty Pharmaceutical Management
Customer K	November 30, 2012 to December 31, 2013(1)		42,989			64,651
Customer L	September 1, 2012 to April 29, 2013(1)		27,963			30,643
Customer B	December 31, 2012 to September 27, 2013(1)		9,733	*		33,746
Medicaid Administration
Customer M	December 4, 2011(3)		13,805			—
Customer N	September 30, 2013(4)		40,774			37,826
Customer O	March 31, 2015 to June 30, 2017(1)		12,466			12,880
Customer P	June 30, 2013 to September 30, 2014(1)		11,411			9,879

*

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 two additional one-year periods.

(3)

The contract has terminated.

(4)

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

Schedule of fair value of financial assets and liabilities

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Cash and Cash Equivalents(1)	$	—	$	1,296	$	—	$	1,296
Restricted Cash(2)		—		47,972		—		47,972
Investments:
U.S. Government and agency securities		697		—		—		697
Obligations of government-sponsored enterprises(3)		—		8,293		—		8,293
Corporate debt securities		—		191,813		—		191,813
Taxable municipal bonds		—		—		—		—
Certificates of deposit		—		100		—		100
December 31, 2011	$	697	$	249,474	$	—	$	250,171

	June 30, 2012
	Level 1		Level 2		Level 3		Total
Cash and Cash Equivalents(4)	$	—	$	633	$	—	$	633
Restricted Cash(5)		—		66,779		—		66,779
Investments:
U.S. Government and agency securities		536		—		—		536
Obligations of government-sponsored enterprises(3)		—		8,130		—		8,130
Corporate debt securities		—		171,214		—		171,214
Taxable municipal bonds		—		9,562		—		9,562
Certificates of deposit		—		150		—		150
June 30, 2012	$	536	$	256,468	$	—	$	257,004

(1)

Excludes $118.6 million of cash held in bank accounts by the Company.

(2)

Excludes $137.8 million of restricted cash held in bank accounts by the Company.

(3)

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

(4)

Excludes $167.4 million of cash held in bank accounts by the Company.

(5)

Excludes $141.8 million of restricted cash held in bank accounts by the Company.

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

	December 31, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. Government and agency securities	$	697	$	—	$	—		$	697
Obligations of government-sponsored enterprises(1)		8,293		3		(3	)		8,293
Corporate debt securities		192,059		31		(277	)		191,813
Certificates of deposit		100		—		—			100
Total investments at December 31, 2011	$	201,149	$	34	$	(280	)	$	200,903

	June 30, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. Government and agency securities	$	536	$	—	$	—		$	536
Obligations of government-sponsored enterprises(1)		8,127		3		—			8,130
Corporate debt securities		171,313		62		(161	)		171,214
Certificates of deposit		150		—		—			150
Taxable municipal bonds		9,567		—		(5	)		9,562
Total investments at June 30, 2012	$	189,693	$	65	$	(166	)	$	189,592

(1)

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

Summary of maturity dates of investments

	Amortized Cost		Estimated Fair Value
2012	$	116,533	$	116,517
2013		68,078		68,020
2014		5,082		5,055
Total investments at June 30, 2012	$	189,693	$	189,592

Schedule of stock option activity

	Options			Weighted Average Exercise Price
Outstanding, beginning of period		3,841,233		$	42.65
Granted		1,347,268			47.47
Forfeited		(298,733	)		45.27
Exercised		(83,476	)		35.98
Outstanding, end of period		4,806,292		$	43.95
Vested and expected to vest at end of period		4,683,445		$	43.86
Exercisable, end of period		2,527,059		$	40.84

Schedule of nonvested restricted stock award activity

	Shares			Weighted Average Grant Date Fair Value
Outstanding, beginning of period		18,748		$	52.11
Awarded		23,672			42.25
Vested		(18,748	)		52.11
Forfeited		—			—
Outstanding, ending of period		23,672		$	42.25

Schedule of nonvested restricted stock units

	Shares			Weighted Average Grant Date Fair Value
Outstanding, beginning of period		206,338		$	44.63
Awarded		127,913			47.46
Vested		(99,976	)		41.81
Forfeited		(24,302	)		47.44
Outstanding, ending of period		209,973		$	47.36