Impairment of Long-Lived Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Impairment charges	$ 1,388	$ 1,198	$ 3,258	$ 1,556
Estimated aggregate fair value of long-lived assets impaired	$ 2,985		$ 12,315
Minimum [Member]
Property, Plant and Equipment [Line Items]
Projects future attendance fluctuations, percent	(10.00%)
Risk-adjusted of return, discount rate	10.00%
Maximum [Member]
Property, Plant and Equipment [Line Items]
Projects future attendance fluctuations, percent	10.00%
Risk-adjusted of return, discount rate	15.00%