FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2012

Summary Of Fair Value Of Financial Assets And Liabilities Measured At Recurring Basis And Valuation Techniques

The following table represents our fair value hierarchy and the valuation techniques used for financial assets and financial liabilities measured at fair value on a recurring basis (in thousands):

	June 30, 2012
	Total		Level 1		Level 2		Level 3		Valuation Techniques
Assets:
Money market funds	$	91,253	$	91,253	$	—	$	—	(a)
U.S. treasury securities		10,999		10,999		—		—	(a)
U.S. agency securities		3,517		3,517		—		—	(a)
Corporate notes/bonds		36,683		—		36,683		—	(a)
Certificates/term deposits		1,800		—		1,800		—	(a)
Derivative assets (1)		863		—		863		—	(a)
Total	$	145,115	$	105,769	$	39,346	$	—
Liabilities:
Derivative liabilities (1)	$	2,012	$	—	$	2,012	$	—	(a)
Contingent consideration		2,184		—		—		2,184	(b)
Total	$	4,196	$	—	$	2,012	$	2,184

	December 31, 2011
	Total		Level 1		Level 2		Level 3		Valuation Techniques
Assets:
Money market funds	$	65,811	$	65,811	$	—	$	—	(a)
U.S. treasury securities		6,921		3,499		3,422		—	(a)
U.S. agency securities		5,551		3,545		2,006		—	(a)
Corporate notes/bonds		47,528		—		47,528		—	(a)
Certificates/term deposits		2,922		—		2,922		—	(a)
Derivative assets (1)		2,863		—		2,863		—	(a)
Total	$	131,596	$	72,855	$	58,741	$	—
Liabilities:
Derivative liabilities (1)	$	300	$	—	$	300	$	—	(a)
Contingent consideration		3,782		—		—		3,782	(b)
Total	$	4,082	$	—	$	300	$	3,782

(1) See Note 15 – Derivative Instruments for details.

Summary Of Liabilities Measured At Fair Value On Recurring Basis Using Significant Unobservable Inputs (Level 3)

The following table presents our liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months and six months ended June 30, 2012 and 2011 (in thousands):

	Three Months Ended June  30						Six Months Ended June  30
	2012			2011			2012			2011
Total, beginning of the period	$	2,755		$	9,727		$	3,782		$	8,515
Contingent consideration		221			2,400			—			5,700
Change in fair value of contingent consideration		(57	)		—			138			—
Payment of contingent consideration		(735	)		(614	)		(1,736	)		(2,702	)
Total, end of the period	$	2,184		$	11,513		$	2,184		$	11,513

Summary Of Book Value And Fair Value Of Current And Long-Term Portion Of Loans Payable

The book value and fair value of our current and long-term portion of loans payable as of June 30, 2012 are as follows (in thousands):

	Book Value		Fair Value  (1)
Current portion of loans payable	$	70,672	$	70,672
Long-term portion of loans payable		33,381		33,381
	$	104,053	$	104,053

(1) Estimated fair value of long-term debt is measured using the income approach. This fair value measurement is based on similar grade US Treasury security re-priced at June 30, 2012 plus contractual spread and thus represents Level 2 inputs under the fair value hierarchy.