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Related Party Transactions | 12 Months Ended
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Dec. 31, 2018
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Related Party Transactions | 37. RELATED PARTY TRANSACTIONS Balances and transactions within the Group had been eliminated upon consolidation. Details of transactions between the Group and other related parties were disclosed as follows:
| a. | Related parties
In addition to those disclosed in Note 15, the related parties were as follows:
Related Parties |  | Relationship with the Company
ASE Cultural and Educational Foundation |  | Substantial related party
Fu Hwa Construction Co., Ltd. |  | Associate’s subsidiary
| b. | The Group contributed NT$100,000 thousand (US$3,267 thousand) to ASE Cultural and Educational Foundation in 2016, 2017 and 2018, respectively, for environmental charity in promoting the related domestic environmental protection and public service activities (Note 39).
| c. | In the third quarter of 2016, the Group acquired patents and specific technology from DECA at NT$403,543 thousand, which was primarily based on independent professional appraisal reports. As of December 31, 2017 and 2018, NT$93,000 thousand and NT$57,590 thousand (US$1,881 thousand) have not been paid and were accrued under the line item of other payables, respectively.
| d. | The Group contracted with Fu Hwa Construction Co., Ltd. to construct a female employee dormitory on current leased land. Total consideration was primarily based on independent professional appraisal reports. During 2016, the employee dormitory has been capitalized for NT$875,000 thousand. The female employee dormitory has been completely constructed in 2016. As of December 31, 2016, NT$228,500 thousand has not been paid and was accrued under the line item of other payables, which was fully repaid in March 2017.
| e. | In February 2016, USIE repurchased 1,801 thousand shares of USIE’s outstanding ordinary shares from the Group’s key management personnel with approximately NT$1,130,650 thousand.
| f. | As disclosed in Note 32, the Company’s subsidiary, USIE, repurchased its own 1,283 thousand ordinary shares from the Group’s key management personnel in February 2018 with approximately NT$ 653,244 thousand (US$21,341 thousand).
| g. | Compensation to key management personnel
|  | For the Year Ended December 31
|  | 2016 |  | 2017 |  | 2018
|  | NT$ |  | NT$ |  | NT$ |  | US$ (Note 4)
Short-term employee benefits |  | $ | 790,460 |  |  | $ | 860,631 |  |  | $ | 1,041,216 |  |  | $ | 34,015 |
Post-employment benefits |  |  | 4,790 |  |  |  | 2,858 |  |  |  | 3,884 |  |  |  | 127 |
Share-based payments |  |  | 11,547 |  |  |  | - |  |  |  | 9,145 |  |  |  | 299 |
|  | $ | 806,797 |  |  | $ | 863,489 |  |  | $ | 1,054,245 |  |  | $ | 34,441 |
The compensation to the Group’s key management personnel is determined according to personal performance and market trends.

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- Definition The entire disclosure for related parties. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Section Disclosures -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=sect_Disclosures&doctype=Standard -URIDate 2018-03-16 + Details
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