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Summarized Income Statement Information for Vasconia in USD and MXN (Detail)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2010
USD ($)
Dec. 31, 2012
Grupo Vasconia S.A.B.
USD ($)
Dec. 31, 2012
Grupo Vasconia S.A.B.
MXN
Dec. 31, 2011
Grupo Vasconia S.A.B.
USD ($)
Dec. 31, 2011
Grupo Vasconia S.A.B.
MXN
Dec. 31, 2010
Grupo Vasconia S.A.B.
USD ($)
Dec. 31, 2010
Grupo Vasconia S.A.B.
MXN
Schedule of Equity Method Investments [Line Items]                  
Net sales $ 486,842 $ 444,418 $ 443,171 $ 168,712 2,224,256 $ 132,310 1,647,479 $ 113,454 1,430,528
Gross Profit 176,788 162,360 169,397 38,134 497,413 38,143 476,501 32,451 409,263
Income from operations 27,335 24,584 29,783 14,614 192,182 17,254 216,715 15,122 190,862
Net Income $ 20,947 $ 14,066 $ 20,261 $ 34,172 443,630 $ 11,395 142,698 $ 9,910 125,115