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Investments (Detail) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Equity Securities without Readily Determinable Fair Value [Line Items]      
Investments in golf related ventures $ 0 $ 282,000  
Percentage of ownership interest in Topgolf 14.00%    
Investment in Topgolf $ 72,238,000   $ 72,238,000
Topgolf International Inc      
Equity Securities without Readily Determinable Fair Value [Line Items]      
Investments in golf related ventures 0 $ 282,000  
Investment in Topgolf $ 72,238,000