Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Measurement [Abstract]

Assets And Liabilities Carried At Fair Value

				Fair Value Measurements at Reporting Date Using:
(in thousands)	September 30, 2011			Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Assets
Cash equivalents	$	163,386		$	160,513	$	2,873		$	0
Short-term investments	$	582		$	0	$	582		$	0
Liabilities
Foreign currency future	$	(561	)	$	0	$	(561	)	$	0
Deferred compensation	$	(2,063	)	$	0	$	0		$	(2,063	)
Contingent consideration	$	(9,529	)	$	0	$	0		$	(9,529	)
				Fair Value Measurements  at Reporting Date Using:
(in thousands)	December 31, 2010			Quoted Prices  in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Assets
Cash equivalents	$	301,714		$	273,926	$	27,788		$	0
Short-term investments	$	455		$	0	$	455		$	0

Fair Value Liabilities Measured Using Significant Unobservable Inputs

	Fair Value Measurement Using Significant Unobservable Inputs
(in thousands)	Contingent Consideration		Deferred Compensation
Beginning balance – January 1, 2011	$	0	$	0
Issuances		9,501		2,057
Interest expense included in earnings		28		6
Ending balance – September 30, 2011	$	9,529	$	2,063