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Components of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Intangible Assets by Major Class [Line Items] |  |
Definite-lived intangibles, gross amount | $ 154,842 | $ 82,065
Intangibles, gross amount | 186,982 | 114,205
Definite-lived intangibles, accumulated amortization | (15,065) | (17,763)
Intangibles, accumulated amortization | (15,065) | (17,763)
Trade names |  |
Intangible Assets by Major Class [Line Items] |  |
Indefinite-lived intangibles, gross amount | 32,140 | 32,140
Customer relationships |  |
Intangible Assets by Major Class [Line Items] |  |
Definite-lived intangibles, gross amount | 139,506 | 68,939
Definite-lived intangibles, accumulated amortization | (13,663) | (8,315)
Other definite-lived intangibles |  |
Intangible Assets by Major Class [Line Items] |  |
Definite-lived intangibles, gross amount | 15,336 | 13,126
Definite-lived intangibles, accumulated amortization | $ (1,402) | $ (9,448)

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