Computations of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share Disclosure [Line Items]
Net income attributable to Cinemark Holdings, Inc.		$ 82,135	$ 51,239	$ 144,156	$ 130,967
Earnings allocated to participating share-based awards	[1]	(465)	(263)	(817)	(620)
Net income attributable to common stockholders		$ 81,670	$ 50,976	$ 143,339	$ 130,347
Basic weighted average common stock outstanding		116,091	115,785	115,988	115,707
Diluted		116,268	116,072	116,238	116,020
Basic earnings per share attributable to common stockholders		$ 0.70	$ 0.44	$ 1.23	$ 1.12
Diluted earnings per share attributable to common stockholders		$ 0.70	$ 0.44	$ 1.23	$ 1.12
Restricted Stock Units (RSUs)
Earnings Per Share Disclosure [Line Items]
Common equivalent shares for restricted stock units		177	287	250	313

[1] For the three months ended June 30, 2018 and 2017, a weighted average of approximately 676 and 605 shares of unvested restricted stock, respectively, were considered participating securities. For the six months ended June 30, 2018 and 2017, a weighted average of approximately 663 and 552 shares of restricted stock, respectively, were considered participating securities.