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Other Noncurrent Liabilities - Summary of Other Noncurrent Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Other Liabilities Disclosure [Abstract]    
Reserve for uncertain tax positions $ 16,832 $ 16,832
Insurance claims and expenses 586 586
Other 1,104 1,154
Total $ 18,522 $ 18,572