8. Goodwill

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

The following table reflects the changes in the carrying amounts of goodwill by reported segment for the nine months ended September 30, 2011 (unaudited).


	Region		Region			Region		Region
	One		Two			Three		Four		Total
Balance as of January 1, 2011	$	65,664	$	8,714		$	35,241	$	22,577	$	132,196
Contingency payments related to acquisitions		—		—			32		—		32
Foreign currency translation		—		(247	)		—		—		(247	)

Balance as of September 30, 2011	$	65,664	$	8,467		$	35,273	$	22,577	$	131,981