4. Goodwill

Changes in the carrying amount of goodwill during the six months ended June 30, 2011, were as follows (in thousands):

		September 30,			September 30,		September 30,		September 30,
	Americas			EMEA		Asia/Pacific		Total
Gross Balance prior to December 31, 2010	$	187,362		$	44,250	$	19,755	$	251,367
Total impairment prior to December 31, 2010		(47,432	)		—		—		(47,432	)

Balance as of December 31, 2010		139,930			44,250		19,755		203,935
Addition – acquisition of ISD (1)		11,380			—		—		11,380
Foreign currency translation adjustments		109			3,120		771		4,000

Balance as of June 30, 2011	$	151,419		$	47,370	$	20,526	$	219,315

(1)	Addition relates to the goodwill acquired in the acquisition of ISD as discussed in Note 2.