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Investments (Detail) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended
Dec. 31, 2017
Sep. 30, 2018
Sep. 30, 2017
Equity Securities without Readily Determinable Fair Value [Line Items]      
Investments in golf related ventures   $ 282 $ 1,499
Percentage of ownership interest in Topgolf   14.00%  
Investment in Topgolf $ 70,495 $ 70,777  
Topgolf International Inc      
Equity Securities without Readily Determinable Fair Value [Line Items]      
Investments in golf related ventures 20,000 282 $ 1,499
Investment in Topgolf $ 70,495 $ 70,777