Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Numerator:
Net income attributable to Cinemark Holdings, Inc. Stockholders' Equity	$ 51,638	$ 40,411	$ 93,742	$ 65,374
Earnings allocated to participating share-based awards	(698)	(480)	(1,084)	(667)
Net income attributable to common stockholders	$ 50,940	$ 39,931	$ 92,658	$ 64,707
Denominator (shares in thousands):
Basic weighted average common stock outstanding	113,301	112,764	113,063	112,654
Common equivalent shares for stock options	39	41	38	46
Common equivalent shares for restricted stock units	397	404	467	380
Diluted	113,737	113,209	113,568	113,080
Basic earnings per share attributable to common stockholders	$ 0.45	$ 0.35	$ 0.82	$ 0.57
Diluted earnings per share attributable to common stockholders	$ 0.45	$ 0.35	$ 0.82	$ 0.57