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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2011
Changes in Carrying Amount of Goodwill | Changes in the carrying amount of goodwill attributable to each reporting unit with goodwill balances during the years ended December 31, 2011 and 2010, were as follows (in thousands):
|  |  | September 30, |  |  |  | September 30, |  |  |  | September 30, |  |  |  | September 30, |
|  | Americas |  |  | EMEA |  |  | Asia/Pacific |  |  | Total |
Gross Balance prior to December 31, 2009 |  | $ | 187,241 |  |  | $ | 46,846 |  |  | $ | 18,195 |  |  | $ | 252,282 |
Total impairment prior to December 31, 2009 |  |  | (47,432 | ) |  |  | — |  |  |  | — |  |  |  | (47,432 | )
Balance, December 31 2009 |  |  | 139,809 |  |  |  | 46,846 |  |  |  | 18,195 |  |  |  | 204,850 |
Foreign currency translation adjustments |  |  | 121 |  |  |  | (2,596 | ) |  |  | 1,560 |  |  |  | (915 | )
Balance, December 31 2010 |  | $ | 139,930 |  |  | $ | 44,250 |  |  | $ | 19,755 |  |  | $ | 203,935 |
Foreign currency translation adjustments |  |  | (144 | ) |  |  | (638 | ) |  |  | (389 | ) |  |  | (1,171 | )
Additions—acquisition of ISD (1) |  |  | 11,380 |  |  |  | — |  |  |  | — |  |  |  | 11,380 |
Balance, December 31, 2011 |  | $ | 151,166 |  |  | $ | 43,612 |  |  | $ | 19,366 |  |  | $ | 214,144 |
(1) | Addition relates to goodwill acquired during the acquisition of ISD. See Note 2, Acquisitions.

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- Definition Tabular disclosure of goodwill by reportable segment and in total. Disclosure details may include, but are not limited to, the carrying amount of goodwill, goodwill acquired during the year, goodwill impairment losses recognized, goodwill written-off due to the sale of a business unit, goodwill not yet allocated, and any other changes to goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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