Computations of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Earnings Per Share Disclosure [Line Items]
Net income attributable to Cinemark Holdings, Inc.	$ 42,521		$ 35,443
Earnings allocated to participating share-based awards	(218)	[1]	(211)	[1]
Net income attributable to common stockholders	$ 42,303		$ 35,232
Basic weighted average common stock outstanding	114,837		114,182
Common equivalent shares for restricted stock units	221		428
Diluted	115,058		114,610
Basic earnings per share attributable to common stockholders	$ 0.37		$ 0.31
Diluted earnings per share attributable to common stockholders	$ 0.37		$ 0.31

[1] For the three months ended March 31, 2015 and 2014, a weighted average of approximately 595 and 689 shares of unvested restricted stock, respectively, were considered participating securities.