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Computations of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Earnings Per Share Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Cinemark Holdings, Inc. |  | $ 95,074 | $ 38,139 | $ 51,239 | $ 79,728 | $ 77,005 | $ 65,655 | $ 53,906 | $ 58,525 | $ 264,180 | $ 255,091 | $ 216,869
Earnings allocated to participating share-based awards | [1] |  |  |  |  |  |  |  |  | (1,350) | (1,187) | (1,306)
Net income attributable to common stockholders |  |  |  |  |  |  |  |  |  | $ 262,830 | $ 253,904 | $ 215,563
Basic weighted average common stock outstanding |  |  |  |  |  |  |  |  |  | 115,766 | 115,508 | 115,080
Diluted |  |  |  |  |  |  |  |  |  | 116,059 | 115,783 | 115,399
Basic earnings per share attributable to common stockholders |  | $ 0.82 | $ 0.33 | $ 0.44 | $ 0.68 | $ 0.66 | $ 0.56 | $ 0.46 | $ 0.50 | $ 2.26 | $ 2.19 | $ 1.87
Diluted earnings per share attributable to common stockholders |  | $ 0.82 | $ 0.33 | $ 0.44 | $ 0.68 | $ 0.66 | $ 0.56 | $ 0.46 | $ 0.50 | $ 2.26 | $ 2.19 | $ 1.87
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common equivalent shares for restricted stock units |  |  |  |  |  |  |  |  |  | 293 | 275 | 319
[1] | For the years ended December 31, 2015, 2016 and 2017, a weighted average of approximately 699 shares, 542 shares and 596 shares, of unvested restricted stock, respectively, are considered participating securities.

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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=96948231&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1252-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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