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Other Intangibles Subject to Amortization by Major Class (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Customer related |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 9,514 | $ 914
Accumulated amortization | (3,910) | (426)
Finite-Lived Intangible Assets, Net, Total | 5,604 | 488
Marketing related |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 576 | 576
Accumulated amortization | (572) | (495)
Finite-Lived Intangible Assets, Net, Total | $ 4 | $ 81

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