XML 63 R45.htm IDEA: XBRL DOCUMENT
v3.25.1

Significant events after the reporting periods | 12 Months Ended
--- | ---
Dec. 31, 2024
Significant events after the reporting period [Abstract] |
Significant events after the reporting periods | 38. Significant events after the reporting period a) On January 21, 2025, the Company’s Board of Directors approved to implement a treasury stock transaction from January 22, 2025 to March 21, 2025, repurchasing up to 10,000 thousand shares to maintain the Company’s credit and shareholders’ equity. The Company has completed the aforementioned share buyback program during the first quarter of 2025, with a transaction amoun t of NT$321,705 thousand. On April 15, 2025, the Company’s Board of Directors resolved to cancel the 10,000 thousand shares. b) Information about the appropriations of 2024 earnings is provided in Note 22.

X
- Definition The entire disclosure for events after the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 10 -IssueDate 2024-01-01 -Section Disclosure -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=10&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IAS10_g17-22_TI -URIDate 2024-03-27 + Details
Name: | ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant events after the reporting period. + References No definition available. + Details
Name: | imos_SignificantEventsAfterTheReportingPeriodAbstract
Namespace Prefix: | imos_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration