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Assets Pledged as Collateral or for Security (Tables) | 12 Months Ended
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Dec. 31, 2017
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Summary of Assets Pledged as Collateral or for Security | In addition to Note 9, the following assets were provided as collateral for bank borrowings and the tariff guarantees of imported raw materials:
|  | December 31
|  | 2016 |  | 2017
|  | NT$ |  | NT$ |  | US$ (Note 4)
Inventories related to real estate business |  | $ | 16,813,023 |  |  | $ | 4,822,043 |  |  | $ | 162,687 |
Investment properties |  |  | - |  |  |  | 7,151,382 |  |  |  | 241,275 |
Land use rights (recorded as long-term prepayment for lease) |  |  | - |  |  |  | 6,813,751 |  |  |  | 229,884 |
Other financial assets (including current and non-current) |  |  | 220,228 |  |  |  | 66,726 |  |  |  | 2,251 |
|  | $ | 17,033,251 |  |  | $ | 18,853,902 |  |  | $ | 636,097 |

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