FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2012

FAIR VALUE MEASUREMENTS

Schedule of cash equivalents, restricted cash and marketable securities by security type

			Gross		Gross
			Unrealized		Unrealized			Estimated
	Cost		Gains		Losses			Fair Value
	(In thousands)
Included in cash and cash equivalents:
Money market funds	$	10,210	$	—	$	—		$	10,210
Restricted cash:
Certificates of deposit	$	794	$	—	$	—		$	794
Marketable securities:
Government-sponsored enterprise securities (due in less than 1 year)	$	12,006	$	20	$	—		$	12,026
Commercial paper (due in less than 1 year)	26,360		32		—			26,392
Corporate notes (due in less than 1 year)	65,616		36		(20		)	65,632
Corporate notes (due in 1 to 2 years)	3,279		4		—			3,283
	$	107,261	$	92	$	(20	)	$	107,333

			Gross		Gross
			Unrealized		Unrealized			Estimated
	Cost		Gains		Losses			Fair Value
	(In thousands)
Included in cash and cash equivalents:
Money market funds	$	12,885	$	—	$	—		$	12,885
Restricted cash:
Certificates of deposit	$	793	$	—	$	—		$	793
Marketable securities:
Certificate of deposit (due in less than 1 year)	$	329	$	—	$	—		$	329
Government-sponsored enterprise securities (due in less than 1 year)	15,061		25		(1		)	15,085
Government-sponsored enterprise securities (due in 1 to 2 years)	6,998		18		(12		)	7,004
Commercial paper (due in less than 1 year)	39,206		41		—			39,247
Corporate notes (due in less than 1 year)	50,556		19		(28		)	50,547
Corporate notes (due in 1 to 2 years)	25,113		30		(14		)	25,129
	$	137,263	$	133	$	(55	)	$	137,341

Schedule of marketable securities with unrealized losses

	Less Than 12 Months					12 Months or Greater				Total
			Gross					Gross				Gross
	Estimated		Unrealized			Estimated		Unrealized		Estimated		Unrealized
	Fair Value		Losses			Fair Value		Losses		Fair Value		Losses
	(In thousands)
As of June 30, 2012:
Corporate notes (due in less than 1 year)	$	32,792	$	(20	)	$	—	$	—	$	32,792	$	(20	)

	Less Than 12 Months					12 Months or Greater				Total
			Gross					Gross				Gross
	Estimated		Unrealized			Estimated		Unrealized		Estimated		Unrealized
	Fair Value		Losses			Fair Value		Losses		Fair Value		Losses
	(In thousands)
As of December 31, 2011:
Government-sponsored enterprise securities (due in less than 1 year)	$	5,021	$	(1	)	$	—	$	—	$	5,021	$	(1	)
Government-sponsored enterprise securities (due in 1 to 2 years)	3,988		(12		)	—		—		3,988		(12		)
Corporate notes (due in less than 1 year)	33,847		(28		)	—		—		33,847		(28		)
Corporate notes (due in 1 to 2 years)	13,096		(14		)	—		—		13,096		(14		)
	$	55,952	$	(55	)	$	—	$	—	$	55,952	$	(55	)

Schedule of assumptions used to estimate the fair value of derivatives

	June 30, 2012	December 31, 2011
Dividend yield	None	None
Expected volatility	0.565	0.714
Risk-free interest rate	0.41%	0.36%
Expected term	3 yrs	3 yrs

Schedule of non-employee options to purchase common stock considered as derivatives and classified as current liabilities

					At June 30, 2012			At December 31, 2011
					Number	Fair		Number	Fair
Issuance	Exercise		Exercisable	Expiration	of	Value		of	Value
Date	Price		Date	Date	Shares	(In thousands)		Shares	(In thousands)
March 2005	$	6.39	January 2007	March 2015	284,600	$	30	284,600	$	64

Schedule of financial assets and liabilities measured at fair value on recurring basis

	Fair Value Measurements at Reporting Date Using
	Quoted Prices in		Significant
	Active Markets		Other		Significant
	for Identical		Observable		Unobservable
	Assets / Liabilities		Inputs		Inputs
(In thousands)	Level 1		Level 2		Level 3		Total
Assets
Money market funds (1)	$	10,210	$	—	$	—	$	10,210
Government-sponsored enterprise securities (2)	—		12,026		—		12,026
Commercial paper (2)	—		26,392		—		26,392
Corporate notes (2) (3)	—		68,915		—		68,915
Total	$	10,210	$	107,333	$	—	$	117,543
Liabilities
Derivatives (4)	$	—	$	—	$	30	$	30

(1)Included in cash and cash equivalents on our condensed consolidated balance sheets.

(2)Included in current marketable securities on our condensed consolidated balance sheets.

(3)Included in noncurrent marketable securities on our condensed consolidated balance sheets.

(4)Included in fair value of derivatives on our condensed consolidated balance sheets.

Schedule of rollforward of the balance sheet amounts for financial instruments in Level 3 category

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)

Three Months Ended June 30, 2012

Change in

Unrealized Gains

Total

Related to

Unrealized

Transfers

Financial

Fair Value at

Gains

Purchases

In and/or

Fair Value at

Instruments

March 31,

Included in

and

Sales and

Out of

June 30,

Held at

(In thousands)

2012

Earnings, net (1)

Issuances

Settlements

Level 3

2012

June 30, 2012 (1)

Derivative liabilities

$

38

$

(8

)

$

—

$

—

$

—

$

30

$

(8

)

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)

Six Months Ended June 30, 2012

Change in

Unrealized Gains

Total

Related to

Unrealized

Transfers

Financial

Fair Value at

Gains

Purchases

In and/or

Fair Value at

Instruments

December 31,

Included in

and

Sales and

Out of

June 30,

Held at

(In thousands)

2011

Earnings, net (1)

Issuances

Settlements

Level 3

2012

June 30, 2012 (1)

Derivative liabilities

$

64

$

(34

)

$

—

$

—

$

—

$

30

$

(34

)

(1)   Reported as unrealized gain on derivatives in our condensed consolidated statements of operations.