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Accounts Receivable, net - Net Accounts Receivable (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Receivables [Abstract]    
Trade receivables $ 89,755 $ 77,899
Insurance claims   1,865
Other 1,414 1,633
Accounts receivable, gross 91,169 81,397
Allowance for doubtful accounts (559) (827)
Accounts receivable, net $ 90,610 $ 80,570