10. Goodwill

Goodwill is assigned to reporting units based upon the specific region where the assets are acquired and associated goodwill resided.

The following table reflects the changes in the carrying amounts of goodwill by reportable segment for the three months ended March 31, 2013 (unaudited restated):

	Region One		Region Two			Region Three			Region Four		Region Five		Total
Balance as of December 31, 2012	$	193,758	$	32,245		$	66,181		$	62,621	$	84,681	$	439,486
Contingent payments related to acquisitions						(6		)					(6		)
Foreign currency translation			(121		)								(121		)
Balance as of March 31, 2013	$	193,758	$	32,124		$	66,175		$	62,621	$	84,681	$	439,359