Impairment of Long-Lived Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Property, Plant and Equipment [Line Items]
Impairment charges		$ 133	$ 358	$ 325
Estimated aggregate fair value of long-lived assets impaired			$ 373
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%