XML 54 R33.htm IDEA: XBRL DOCUMENT
v3.22.1

Other income | 12 Months Ended
--- | ---
Dec. 31, 2021
Text block [abstract] |
Other income |
28. | Other income
|  | Year ended December 31, |
|  | 2019 |  |  | 2020 |  |  | 2021 |
|  | NT$000 |  |  | NT$000 |  |  | NT$000 |
Rental income |  |  | 9,249 |  |  |  | 10,260 |  |  |  | 17,326 |
Dividend income |  |  | 585 |  |  |  | 3,229 |  |  |  | 4,690 |
Grant income |  |  | 925 |  |  |  | 7,668 |  |  |  | 12,480 |
|  |  | 10,759 |  |  |  | 21,157 |  |  |  | 34,496 |

X
- Definition Disclosure of other non operating income expenses. + References No definition available. + Details
Name: | imos_DisclosureOfOtherNonOperatingIncomeExpensesTextBlock
Namespace Prefix: | imos_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block [abstract] + References No definition available. + Details
Name: | imos_TextBlockAbstract
Namespace Prefix: | imos_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration