Acquisitions (Tables)

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Summary of potential contingent consideration

Below is a summary of the potential contingent consideration we may be required to pay in connection with completed acquisitions as of March 31, 2015 (dollars in thousands): 

	Original range
	of potential undiscounted	As of March 31, 2015 Maximum contingent consideration due in
Acquisition:	payments	2015		2016		Total
Prospero	$0 - $3,955	$	1,582	$	—	$	1,582
Effective Companies	$0 - $5,044	2,522		2,522		5,044
Total		$	4,104	$	2,522	$	6,626

Summary of changes in recorded amount of contingent consideration

Below is a summary of the changes in the recorded amount of contingent consideration liabilities from December 31, 2014 to March 31, 2015 for each acquisition (dollars in thousands):

	Liability as of December 31,		Additions		Change in Fair Value of Contingent		Foreign Currency			Liability as of March 31,
Acquisition:	2014		(Payments)		Consideration		Translation			2015
Effective Companies	$	5,083	$	—	$	203	$	(559	)	$	4,727