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Operating costs and expenses (Tables) | 12 Months Ended
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Dec. 31, 2019
Analysis of income and expense [abstract] |
Summary of Operating Costs and Expenses |
|  | 2017 |  |  | 2018 |  |  | 2019 |
|  | NT$000 |  |  | NT$000 |  |  | NT$000 |
Change of finished goods and work in process |  |  | 31,977 |  |  |  | — |  |  |  | — |
Raw materials and supplies used |  |  | 3,036,350 |  |  |  | 3,079,909 |  |  |  | 3,575,283 |
Employee benefit expenses |  |  | 5,895,778 |  |  |  | 5,606,833 |  |  |  | 6,075,773 |
Depreciation expenses |  |  | 2,899,278 |  |  |  | 3,376,579 |  |  |  | 3,731,914 |
Others |  |  | 4,530,425 |  |  |  | 4,464,499 |  |  |  | 4,590,720 |
Total operating costs and expenses |  |  | 16,393,808 |  |  |  | 16,527,820 |  |  |  | 17,973,690 |
Employee benefit expenses |  |  |  |  |  |  |  |  |  |  |  |
Salaries |  |  | 4,847,433 |  |  |  | 4,628,039 |  |  |  | 5,114,790 |
Director’s remuneration |  |  | 27,276 |  |  |  | 18,456 |  |  |  | 26,266 |
Labor and health insurance |  |  | 390,788 |  |  |  | 406,111 |  |  |  | 422,106 |
Pension |  |  | 198,502 |  |  |  | 201,567 |  |  |  | 194,173 |
Share-based payments |  |  | 123,021 |  |  |  | 41,043 |  |  |  | 822 |
Other personnel expenses |  |  | 308,758 |  |  |  | 311,617 |  |  |  | 317,616 |
|  |  | 5,895,778 |  |  |  | 5,606,833 |  |  |  | 6,075,773 |

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- Definition The disclosure of expenses by nature. [Refer: Expenses, by nature] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_10_e&doctype=Standard -URIDate 2019-03-27 + Details
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