XML 143 R122.htm IDEA: XBRL DOCUMENT
v3.20.4

Summary of Potential Number of Units that Could Vest Under Restricted Stock Unit Awards (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of Restricted Stock Unit [Abstract] |  |  |  |
Number of units at threshold IRR |  | 190,707 | 136,285 | 76,065
Number of units at target IRR |  | 286,060 | 204,427 | 152,129
Number of units at maximum IRR |  | 436,681 | 306,651 | 228,194
Fair value of units at threshold IRR | [1] | $ 6,125 | $ 5,011 | $ 2,967
Fair value of units at target IRR | [1] | 9,188 | 7,517 | 5,938
Fair value of units at maximum IRR | [1] | $ 14,026 | $ 11,276 | $ 8,906
[1] | The grant date fair value for units issued during the year ended December 31, 2018 ranged from $37.55 to $39.03. The grant date fair value for the units issued during the year ended December 31, 2019 was $36.77 per share .The grand date fair value for the units issued during the year ended December 31, 2020

X
- Definition Disclosure of restricted stock unit. + References No definition available. + Details
Name: | cnk_DisclosureOfRestrictedStockUnitAbstract
Namespace Prefix: | cnk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Shares Vesting At Maximum Irr + References No definition available. + Details
Name: | cnk_NumberOfSharesVestingAtMaximumIrr
Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Shares Vesting At Target Irr + References No definition available. + Details
Name: | cnk_NumberOfSharesVestingAtTargetIrr
Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Shares Vesting At Threshold Irr + References No definition available. + Details
Name: | cnk_NumberOfSharesVestingAtThresholdIrr
Namespace Prefix: | cnk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value Of Shares Vesting At Maximum Irr + References No definition available. + Details
Name: | cnk_ValueOfSharesVestingAtMaximumIrr
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Value Of Shares Vesting At Target Irr + References No definition available. + Details
Name: | cnk_ValueOfSharesVestingAtTargetIrr
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Value Of Shares Vesting At Threshold Irr + References No definition available. + Details
Name: | cnk_ValueOfSharesVestingAtThresholdIrr
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration