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Components of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Schedule Of Goodwill And Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 49,251 | $ 49,251
Accumulated Amortization | 12,662 | 10,968
Customer Relationships |  |
Schedule Of Goodwill And Intangible Assets [Line Items] |  |
Weighted Average Life | 16 years 4 months 24 days |
Gross Carrying Amount | 48,261 | 48,261
Accumulated Amortization | 12,219 | 10,663
Other Intangible Assets |  |
Schedule Of Goodwill And Intangible Assets [Line Items] |  |
Weighted Average Life | 2 years 6 months |
Gross Carrying Amount | 990 | 990
Accumulated Amortization | $ 443 | $ 305

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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