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Consolidated Statements of Changes in Equity $ in Thousands, $ in Thousands | TWD ($) | USD ($) | Issued capital [member] TWD ($) | Capital surplus [member] TWD ($) | Legal reserve [member] TWD ($) | Unappropriated retained earnings [member] TWD ($) | Foreign currency translation reserve [member] TWD ($) | Amounts recognized in other comprehensive income (loss) and accumulated in equity relating to non-current assets held for sale [member] TWD ($) | Unearned employee awards [member] TWD ($) | Treasury stock [member] TWD ($) | Unrealized gain (loss) on valuation of available -for-sale financial assets [member] TWD ($) | unrealized gain (loss) on valuation of financial assets at fair value through other comprehensive income [member] TWD ($)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2016 | $ 16,247,702 |  | $ 8,869,663 | $ 6,888,826 | $ 1,137,837 | $ 260,989 | $ 10,600 | $ 287,645 | $ (200,204) | $ (1,007,654) |  |
Profit (loss) for the year | 2,796,882 |  |  |  |  | 2,796,882 |  |  |  |  |  |
Other comprehensive income (loss) for the year | (189,902) |  |  |  |  | 42,072 | (232,652) |  |  |  | $ 678 |
Total comprehensive income (loss) | 2,606,980 |  |  |  |  | 2,838,954 | (232,652) |  |  |  | 678 |
Appropriations of prior year's earnings: |  |  |  |  |  |  |  |  |  |  |  |
Legal reserve (Note 22) |  |  |  |  | 28,680 | (28,680) |  |  |  |  |  |
Cash dividends (Note 22) | (257,026) |  |  |  |  | (257,026) |  |  |  |  |  |
Cash distribution from capital surplus (Note 22) | (599,728) |  |  | (599,728) |  |  |  |  |  |  |  |
Restricted shares (Note 34) | 123,021 |  | (6,692) | (17,650) |  | 1,729 |  |  | 145,634 |  |  |
Capital reduction | 0 |  |  |  |  |  |  |  |  |  |  |
Disposal of investment in associates | 16,929 |  |  |  |  |  |  |  |  |  |  |
Effect of disposal of subsidiary |  |  |  |  |  |  | 287,645 | $ (287,645) |  |  |  |
Ending Balance 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 |
Profit (loss) for the year | Previously stated [member] | 1,301,093 |  |  |  |  |  |  |  |  |  |  |
Profit (loss) for the year | 1,325,824 |  |  |  |  | 1,325,824 |  |  |  |  |  |
Other comprehensive income (loss) for the year | (32,829) |  |  |  |  | (45,807) | (51,077) |  |  |  |  | $ 64,055
Total comprehensive income (loss) | 1,292,995 |  |  |  |  | 1,280,017 | (51,077) |  |  |  |  | 64,055
Appropriations of prior year's earnings: |  |  |  |  |  |  |  |  |  |  |  |
Legal reserve (Note 22) |  |  |  |  | 302,653 | (302,653) |  |  |  |  |  |
Cash dividends (Note 22) | (256,806) |  |  |  |  | (256,806) |  |  |  |  |  |
Restricted shares (Note 34) | 41,043 |  | (4,948) | (7,967) |  | 1,089 |  |  | 52,869 |  |  |
Capital reduction | (1,284,223) |  | (1,329,446) | 72 |  |  |  |  |  | 45,151 |  |
Ending Balance (Previously stated [member]) at Dec. 31, 2018 | 18,120,949 |  | 8,862,971 | 6,271,448 | 1,166,517 | 2,815,966 | 65,593 |  | (54,570) | (1,007,654) | 678 |
Ending Balance (Increase (decrease) due to changes in accounting policy required by IFRSs [member]) at Dec. 31, 2018 | 107,215 |  |  |  |  | 65,050 |  |  |  |  | $ (678) | 42,843
Ending Balance (Restated balance [member]) at Dec. 31, 2018 | 18,228,164 |  | 8,862,971 | 6,271,448 | 1,166,517 | 2,881,016 | 65,593 |  | (54,570) | (1,007,654) |  | 42,843
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 (loss) for the year | 2,508,574 | $ 83,871 |  |  |  | 2,508,574 |  |  |  |  |  |
Other comprehensive income (loss) for the year | (127,266) | (4,255) |  |  |  | 17,372 | (104,198) |  |  |  |  | (40,440)
Total comprehensive income (loss) | 2,381,308 | 79,616 |  |  |  | 2,525,946 | (104,198) |  |  |  |  | (40,440)
Appropriations of prior year's earnings: |  |  |  |  |  |  |  |  |  |  |  |
Legal reserve (Note 22) |  |  |  |  | 110,308 | (110,308) |  |  |  |  |  |
Cash dividends (Note 22) | (872,718) |  |  |  |  | (872,718) |  |  |  |  |  |
Restricted shares (Note 34) | 822 |  | (477) | (412) |  | 10 |  |  | 1,701 |  |  |
Disposal of investment in associates | 973,609 | 32,551 |  |  |  | 72 |  |  |  |  |  | (72)
Cancellation of treasury stock |  |  | (255,699) | (212,354) |  | (494,450) |  |  |  | 962,503 |  |
Ending Balance at Dec. 31, 2019 | $ 19,530,585 | $ 652,978 | $ 7,272,401 | $ 6,050,787 | $ 1,579,478 | $ 4,651,215 | $ (89,682) |  | $ 0 | $ 0 |  | $ 66,386

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