XML 98 R77.htm IDEA: XBRL DOCUMENT
v3.22.1

Finance costs (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Text block [abstract] |
Summary of Finance Costs |
|  | Year ended December 31, |
|  | 2019 |  |  | 2020 |  |  | 2021 |
|  | NT$000 |  |  | NT$000 |  |  | NT$000 |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |
Bank loans |  |  | 171,840 |  |  |  | 158,720 |  |  |  | 116,946 |
Lease liabilities |  |  | 14,349 |  |  |  | 13,442 |  |  |  | 15,245 |
Less: Amounts capitalized in qualifying assets |  |  | (15,114 | ) |  |  | (9,762 | ) |  |  | (11,193 | )
|  |  | 171,075 |  |  |  | 162,400 |  |  |  | 120,998 |
Finance expense |  |  | 9,187 |  |  |  | 9,082 |  |  |  | 10,186 |
|  |  | 180,262 |  |  |  | 171,482 |  |  |  | 131,184 |

X
- Definition Disclosure of detailed information about finance costs explanatory. + References No definition available. + Details
Name: | imos_DisclosureOfDetailedInformationAboutFinanceCostsExplanatory
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