Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Summary of Total Accounts and Notes Receivable (Detail)

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Summary of Significant Accounting Policies - Summary of Total Accounts and Notes Receivable (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Accounting Policies [Abstract]    
Trade $ 270,498 $ 176,082
Notes receivable 244 650
Allowance for doubtful accounts (12,853) (8,117)
Total accounts and notes receivable, net of allowance for bad debt $ 257,889 $ 168,615