Investments - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2016	Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments, All Other Investments [Abstract]
Percentage of ownership interest in TopGolf International, Inc.			14.00%
Investment in TopGolf International, Inc. during the period			$ 1,742,000	$ 21,499,000	$ 1,448,000
Investment in TopGolf International, Inc.			72,238,000	70,495,000
Percentage of Topgolf preferred shares sold	10.00%				10.00%
Reduction in total investment in Topgolf	$ (5,767,000)		(20,000,000)
Proceeds from sale of investments in golf-related ventures	$ 23,429,000		0	0	$ 23,429,000
Gain on sale of preferred shares in Topgolf		$ 17,662,000	$ 0	$ 0	$ 17,662,000