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Goodwill and Identifiable Intangible Assets, Net (Tables) | 3 Months Ended
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Mar. 31, 2013
Goodwill and Identifiable Intangible Assets, Net |
Schedule of changes in the carrying amount of goodwill | The changes in the carrying amount of goodwill are as follows (in thousands):
|  | March 31, 2013 |  | December 31, 2012 |
--- | --- | --- | --- | --- | ---
Balance at beginning of year |  | $ | 114,588 |  | $ | 107,093 |
Additions |  |  | — |  |  | 7,495 |
Balance at end of period |  | $ | 114,588 |  | $ | 114,588 |
Schedule of components of identifiable intangible assets |
|  |  |  | March 31, 2013 |  | December 31, 2012 |
--- | --- | --- | --- | --- | --- | --- | ---
|  | Estimated Useful Lives in Years |  | Gross Book Value |  | Accumulated Amortization |  | Gross Book Value |  | Accumulated Amortization |
Customer relationships |  | 1 - 15 |  | $ | 40,404 |  | $ | (16,934 | ) | $ | 40,404 |  | $ | (15,579 | )
Backlog |  | 1 - 2 |  |  | 6,515 |  | $ | (6,515 | ) |  | 6,515 |  |  | (6,375 | )
Noncompete agreements |  | 2 - 7 |  |  | 2,890 |  | $ | (2,482 | ) |  | 2,890 |  |  | (2,380 | )
Tradenames |  | 2 - 25 |  |  | 23,695 |  | $ | (4,987 | ) |  | 23,695 |  |  | (4,655 | )
Total |  |  |  | $ | 73,504 |  | $ | (30,918 | ) | $ | 73,504 |  | $ | (28,989 | )

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: 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 2: 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. Reference 3: 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=14024403&loc=d3e13854-109267 Reference 4: 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=14024403&loc=d3e13816-109267 Reference 5: 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. + Details
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