Commitments and Contingencies - Additional Information (Detail) - USD ($)	6 Months Ended	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2016
Commitments And Contingencies [Line Items]
Estimated combined obligations for commitments	$ 130,000,000
License agreement term, description	The License Agreement has an initial term through December 31, 2031, with an automatic additional 15 year extension plus a five year option added to the term of the License Agreement from December 31st of the year of each new Standalone Park opening.
Minimum [Member]
Commitments And Contingencies [Line Items]
Amount in controversy, not recorded		$ 5,000,000