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
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Trade $ 144,204 $ 130,075
Allowance for bad debt (7,767) (7,564)
Total accounts and notes receivable, net of allowance for bad debt $ 136,437 $ 122,511