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Description of Business and Summary of Significant Accounting Policies - Summary of Prepaid Expense and Other Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Prepaid Expense and Other Assets [Abstract]    
Peterson note receivable   $ 6,785
Prepaid expenses $ 14,001 15,992
Inventories 8,065 8,051
Deferred software costs 2,796 3,832
Supplemental deferred compensation plan assets 22,204 19,289
Other 8,345 8,430
Total prepaid expenses and other assets $ 55,411 $ 62,379