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v3.21.1

Consolidated Statements of Changes in Equity $ in Thousands, $ in Thousands | TWD ($) | USD ($) | Capital stock [member] TWD ($) | Capital surplus [member] TWD ($) | Legal reserve [member] TWD ($) | Special reserve [member] TWD ($) | Unappropriated retained earnings [member] TWD ($) | Financial statements translation differences of foreign operations [member] TWD ($) | Unearned employee awards [member] TWD ($) | Treasury stock [member] TWD ($) | unrealized gain (loss) on valuation of financial assets at fair value through other comprehensive income [member] TWD ($) | Unrealized gain (loss) on valuation of available -for-sale financial assets [member] TWD ($)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance (Previously stated [member]) at Dec. 31, 2017 | $ 18,120,949 |  | $ 8,862,971 | $ 6,271,448 | $ 1,166,517 |  | $ 2,815,966 | $ 65,593 | $ (54,570) | $ (1,007,654) |  | $ 678
Beginning Balance (Increase (decrease) due to changes in accounting policy required by IFRSs [member]) at Dec. 31, 2017 | 107,215 |  |  |  |  |  | 65,050 |  |  |  | $ 42,843 | $ (678)
Beginning Balance (Restated balance [member]) at Dec. 31, 2017 | 18,228,164 |  | 8,862,971 | 6,271,448 | 1,166,517 |  | 2,881,016 | 65,593 | (54,570) | (1,007,654) | 42,843 |
Profit for the year | 1,325,824 |  |  |  |  |  | 1,325,824 |  |  |  |  |
Other comprehensive (loss) income | (32,829) |  |  |  |  |  | (45,807) | (51,077) |  |  | 64,055 |
Total comprehensive income (loss) for the year (Note 23) | 1,292,995 |  |  |  |  |  | 1,280,017 | (51,077) |  |  | 64,055 |
Appropriation of prior year's earnings: |  |  |  |  |  |  |  |  |  |  |  |
Legal reserve (Note 22) |  |  |  |  | 302,653 |  | (302,653) |  |  |  |  |
Cash dividends (Note 22) | (256,806) |  |  |  |  |  | (256,806) |  |  |  |  |
Restricted shares (Note 19) | 41,043 |  | (4,948) | (7,967) |  |  | 1,089 |  | 52,869 |  |  |
Capital reduction | (1,284,223) |  | (1,329,446) | 72 |  |  |  |  |  | 45,151 |  |
Ending Balance at Dec. 31, 2018 | 18,021,173 |  | 7,528,577 | 6,263,553 | 1,469,170 |  | 3,602,663 | 14,516 | (1,701) | (962,503) | 106,898 |
Profit for the year | 2,508,574 |  |  |  |  |  | 2,508,574 |  |  |  |  |
Other comprehensive (loss) income | (127,266) |  |  |  |  |  | 17,372 | (104,198) |  |  | (40,440) |
Total comprehensive income (loss) for the year (Note 23) | 2,381,308 |  |  |  |  |  | 2,525,946 | (104,198) |  |  | (40,440) |
Appropriation of prior year's earnings: |  |  |  |  |  |  |  |  |  |  |  |
Legal reserve (Note 22) |  |  |  |  | 110,308 |  | (110,308) |  |  |  |  |
Cash dividends (Note 22) | (872,718) |  |  |  |  |  | (872,718) |  |  |  |  |
Restricted shares (Note 19) | 822 |  | (477) | (412) |  |  | 10 |  | $ 1,701 |  |  |
Cancellation of treasury stock (Note 20) |  |  | (255,699) | (212,354) |  |  | (494,450) |  |  | $ 962,503 |  |
Disposal of investment accounted for using equity method (Note 23) |  |  |  |  |  |  | 72 |  |  |  | (72) |
Ending Balance at Dec. 31, 2019 | 19,530,585 |  | 7,272,401 | 6,050,787 | 1,579,478 |  | 4,651,215 | (89,682) |  |  | 66,386 |
Profit for the year | 2,378,978 | $ 84,721 |  |  |  |  | 2,378,978 |  |  |  |  |
Other comprehensive (loss) income | 115,308 | 4,107 |  |  |  |  | (41,374) | 28,352 |  |  | 128,330 |
Total comprehensive income (loss) for the year (Note 23) | 2,494,286 | 88,828 |  |  |  |  | 2,337,604 | 28,352 |  |  | 128,330 |
Appropriation of prior year's earnings: |  |  |  |  |  |  |  |  |  |  |  |
Legal reserve (Note 22) |  |  |  |  | 258,416 |  | (258,416) |  |  |  |  |
Special reserve (Note 22) |  |  |  |  |  | $ 19,802 | (19,802) |  |  |  |  |
Cash dividends (Note 22) | (1,309,032) |  |  |  |  |  | (1,309,032) |  |  |  |  |
Ending Balance at Dec. 31, 2020 | $ 20,715,839 | $ 737,744 | $ 7,272,401 | $ 6,050,787 | $ 1,837,894 | $ 19,802 | $ 5,401,569 | $ (61,330) |  |  | $ 194,716 |

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