| 6. | Other operating income (expenses), net |
| 2015 | 2016 | 2017 | 2017 | |||||||||||||
| NT$000 | NT$000 | NT$000 | US$000 | |||||||||||||
|
Gain on disposal of property, plant and equipment, net |
1,562 | 2,575 | 132,777 | 4,480 | ||||||||||||
|
Impairment on property, plant and equipment |
(1,460 | ) | (8,198 | ) | (956 | ) | (32 | ) | ||||||||
|
Gain on disposal of scrapped materials |
31,870 | 30,476 | 27,940 | 943 | ||||||||||||
|
Gain on disposal of items purchased on behalf of others |
22,893 | 48,812 | 26,417 | 891 | ||||||||||||
|
Royalty income |
— | — | 11,998 | 405 | ||||||||||||
|
Insurance compensation income |
— | 7,033 | 486,858 | 16,426 | ||||||||||||
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Others |
50,186 | 9,608 | 7,800 | 262 | ||||||||||||
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| 105,051 | 90,306 | 692,834 | 23,375 | |||||||||||||
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