4. GOODWILL

The Company performed the required goodwill impairment test as of November 30^th for each of the years ended December 31, 2012, 2011 and 2010. The Company completed or obtained an analysis to assess the fair value of its reporting units to determine whether goodwill was impaired and the extent of such impairment, if any for the years ended December 31, 2012, 2011 and 2010. Based upon this analysis, the Company determined that its current goodwill balance was not impaired as of the date of testing.

The changes in the carrying amount of goodwill for the years presented are as follows:


Carrying amount at December 31, 2009		9,717
Revision to prior year purchase price allocation		(8	)
Carrying amount at December 31, 2010		9,709
Changes to the carrying amount		—
Carrying amount at December 31, 2011 and 2012	$	9,709