Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2011

Fair Value Measurements

Fair Value Of Financial Assets And Liabilities

	Fair Value Measurements at June 30, 2011
	Total		Quoted Price in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents
Overnight deposits	$	98,192	$	98,192	$	0	$	0
Money market instruments		14,764		0		14,764		0
Total cash and cash equivalents	$	112,956	$	98,192	$	14,764	$	0
Available-for-sale securities
Short-term
Certificates of deposit	$	26,762	$	0	$	26,762	$	0
Commercial paper		35,725		0		35,725		0
Corporate securities		73,466		0		73,466		0
U.S. Government agency securities		10,011		0		10,011		0
Long-term
Certificates of deposit		33,474		0		33,474		0
Commercial paper		0		0		0		0
Corporate securities		66,366		0		66,366		0
U.S. Government agency securities		53,366		0		53,366		0
Total available-for-sale securities	$	299,170	$	0	$	299,170	$	0
Deferred compensation asset (1)		3,379		0		3,379		0
Total assets	$	415,505	$	98,192	$	317,313	$
Liabilities:
Deferred compensation liability (3)	$	8,070	$	4,692	$	3,378	$	0
Forward foreign currency exchange contract liability (2)		6,265		0		6,265		0
Contingent acquisition consideration payable (4)		38,786		0		0		38,786
Total liabilities	$	53,121	$	4,692	$	9,643	$	38,786

	Fair Value Measurements at December 31, 2010
	Total		Quoted Price in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents
Overnight deposits	$	51,647	$	51,647	$	0	$	0
Money market instruments		36,432		0		36,432		0
Total cash and cash equivalents	$	88,079	$	51,647	$	36,432	$	0
Available-for-sale securities
Short-term
Certificates of deposit	$	29,845	$	0	$	29,845	$	0
Commercial paper		27,457		0		27,457		0
Corporate securities		80,186		0		80,186		0
U.S. Government agency securities		48,545		0		48,545		0
Long-term
Certificates of deposit		25,848		0		25,848		0
Commercial paper		0		0		0		0
Corporate securities		72,329		0		72,329		0
U.S. Government agency securities		29,994		0		29,994		0
Total available-for-sale securities	$	314,204	$	0	$	314,204	$	0
Deferred compensation asset (1)		2,748		0		2,748		0
Forward foreign currency exchange contract asset (2)		1,496		0		1,496		0
Total assets	$	406,527	$	51,647	$	354,880	$	0
Liabilities:
Deferred compensation liability (3)	$	5,560	$	2,812	$	2,748	$	0
Forward foreign currency exchange contract liability (2)		1,673		0		1,673		0
Contingent acquisition consideration payable (4)		43,718		0		0		43,718
Total liabilities	$	50,951	$	2,812	$	4,421	$	43,718

(1) At June 30, 2011 and December 31, 2010, 93% and 97% of the deferred compensation asset balance was included in other assets and the remainder of the balance was included in other current assets on the Company's Condensed Consolidated Balance Sheets.

(2) See Note 8 for further information regarding the Company's derivative instruments.

(3) At June 30, 2011 and December 31, 2010, 92% and 94%, respectively, of the deferred compensation liability balance was included in other long-term liabilities and the remainder was included in accounts payable and accrued liabilities on the Condensed Company's Consolidated Balance Sheets.

(4) At June 30, 2011 and December 31, 2010, 92% and 80%, respectively, of the contingent acquisition consideration payable was included in other long-term liabilities, respectively, and 8% and 20%, respectively, was included in accounts payable, accrued liabilities and other current assets.