Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Measurements [Abstract]

Financial Assets And Liability Measured At Fair Value On A Recurring Basis

	Fair Value Measurements at September 30, 2012 Using
		Quoted Prices in		Significant
		Active Markets		Other		Significant
		for		Observable		Unobservable		Balance
		Identical Assets		Inputs		Inputs		as of
Description		(Level 1)		(Level 2)		(Level 3)		September 30, 2012
Assets:
Money market funds	$	53,506	$	—	$	—	$	53,506
Restricted Italian state
bonds		374		—		—		374
Total	$	53,880	$	—	$	—	$	53,880
Liability:
Contingent
consideration	$	—	$	—	$	562	$	562
Total	$	—	$	—	$	562	$	562

	Fair Value Measurements at December 31, 2011 Using
		Quoted Prices in		Significant
		Active Markets		Other		Significant
		for		Observable		Unobservable		Balance
		Identical Assets		Inputs		Inputs		as of
Description		(Level 1)		(Level 2)		(Level 3)		December 31, 2011
Assets:
Money market funds	$	31,849	$	—	$	—	$	31,849
Restricted Italian state
bonds		364		—		—		364
Total	$	32,213	$	—	$	—	$	32,213
Liability:
Contingent
consideration	$	—	$	—	$	15,400	$	15,400
Total	$	—	$	—	$	15,400	$	15,400

Schedule Of Change In Estimated Fair Value Of Contingent Consideration

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
Contingent Consideration:
Balance at beginning of period	$	13,325	$	19,663	$	15,400	$	—
Fair value at acquisition date		—		—		—		18,870
Foreign currency translation		10		1		22		(14)
Change in the estimated fair value of the
contingent consideration liability		(12,773)		(2,231)		(14,860)		(1,423)
Balance at end of period	$	562	$	17,433	$	562	$	17,433