Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Assets and Liabilities Measured and Recognized at Fair Value on Recurring Basis

Assets and liabilities that are measured and recognized at fair value on a recurring basis have been classified under the appropriate level of the fair value hierarchy as of June 30, 2012 and December 31, 2011 are as follows (in thousands):

	June 30, 2012								December 31, 2011
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Money market fund deposits	$	7	$	—	$	—	$	7	$	1,506	$	—	$	—	$	1,506
Liabilities:
Contingent consideration	$	—	$	—	$	108	$	108	$	—	$	—	$	5,765	$	5,765

Summary of Contingent Consideration by Acquisition

Below is the summary of contingent consideration by acquisition (in thousands):

	June 2012									December 2011
	Maximum amount payable		Amount paid		Expense (income) recognized for changes in fair value			Amount outstanding		Maximum amount payable		Amount paid		Expense (income) recognized for changes in fair value			Amount outstanding
Contingent consideration:
RockWest	$	—	$	—	$	—		$	—	$	960	$	281	$	(238	)	$	—
idOnDemand		21,000		—		(5,463	)		—		21,000		—		706			5,463
polyright		737		—		(194	)		108		737		—		42			302
	$	21,737	$	—	$	(5,657	)	$	108	$	22,697	$	281	$	510		$	5,765