Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Our financial assets and liabilities carried at fair value measured on a recurring basis as of September 30, 2012 and December 31, 2011, consisted of the following (in thousands):

			Fair Value Measurements Using
	Total Fair		Quoted prices in		Significant other		Significant
	Value at		active markets		observable inputs		Unobservable inputs
Description	September 30, 2012		(Level 1)		(Level 2)		(Level 3)
Liabilities - Contingent consideration liability	$	6,904	$	—	$	—	$	6,904
			Fair Value Measurements Using
	Total Fair		Quoted prices in		Significant other		Significant
	Value at		active markets		observable inputs		Unobservable inputs
Description	December 31, 2011		(Level 1)		(Level 2)		(Level 3)
Assets - Marketable securities	$	2,798	$	2,798	$	—	$	—
Liabilities - Contingent consideration liability	1,290		—		—		1,290

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

Changes in the fair value of our contingent liability during the three and nine months ended September 30, 2012, were as follows (in thousands):

	Three Months Ended			Nine Months Ended
	September 30,			September 30,
	2012			2012
Beginning balance	$	6,738		$	1,290
Contingent consideration liability recorded as the result of acquisitions (see Note 5)	—			5,000
Initial purchase price adjustments finalized over the period (see Note 5)	280			280
Fair value adjustments recorded to (income) expense during the period	(90		)	370
Contingent payments made	(24		)	(36		)
Ending balance	$	6,904		$	6,904

Fair Value Inputs, Liabilities, Quantitative Information

The recurring Level 3 measurement of our contingent consideration liability includes the following significant unobservable inputs (amount in thousands):

Contingent consideration liability	Fair value at September 30, 2012		Valuation technique	Unobservable inputs	Range
Revenue-based payments	$	6,904	Discounted Cash Flow	Discount rate	10% - 14.5%
				Probability of milestone payment	90%
				Projected year of payments	2012-2028