FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2013

FAIR VALUE MEASUREMENTS

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

	June 30, 2013
	Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	29,881	$	29,881	$	0	$	0
Short-term investments	44,697		12,034		32,663		0
Total financial assets	$	74,578	$	41,915	$	32,663	$	0
Liabilities
Contingent consideration	$	112,392	$	0	$	0	$	112,392

	December 31, 2012
	Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	35,857	$	35,857	$	0	$	0
Short-term investments	121,573		31,459		90,114		0
Long-term investments:
Auction rate securities	1,442		0		0		1,442
Total financial assets	$	158,872	$	67,316	$	90,114	$	1,442
Liabilities
Contingent consideration	$	0	$	0	$	0	$	0

Summary of changes in the financial assets measured at fair value using Level 3 inputs

Long -term Investments	Six months ended June 30, 2013
Beginning balance	$	1,442
Transfers into Level 3	0
Sales and redemptions of securities	(1,528		)
Unrealized gain- included in other comprehensive income	86
Ending balance	$	0
Total realized loss on sale of securities included in Investment income (loss), net for the period	$	(72	)

Schedule of rollforward of the fair value of contingent consideration since the Actient acquisition date

	Contingent consideration
Fair value at date of Actient acquisition, April 26, 2013	$	113,858
Change in contingent consideration charged to operations	2,258
Payments of contingent consideration	(3,724		)
Fair value at June 30, 2013	$	112,392