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Borrowings (Tables) | 12 Months Ended
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Dec. 31, 2019
Long Term Bank Loans [member] |
Statement [LineItems] |
Summary of Borrowings |
| 1) | Bank loans
|  | December 31
|  | 2018 |  | 2019
|  | NT$ |  | NT$ |  | US$ (Note 4)
Revolving bank loans |  |  |  |  |  |
Syndicated bank loans - repayable through May 2020 to May 2023, annual interest rates both were 1.80% as of December 31, 2018 and 2019 |  | $ | 55,000,000 |  |  | $ | 20,000,000 |  |  | $ | 668,673 |
Others - repayable through January 2020 to July 2029, annual interest rates were 0.75%-3.77% and 0.82%-4.13% as of December 31, 2018 and 2019, respectively |  |  | 75,533,354 |  |  |  | 105,214,824 |  |  |  | 3,517,714 |
Mortgage loans |  |  |  |  |  |  |  |  |  |  |  |
Repayable through January 2020 to December 2033, annual interest rates were 5.39% and 2.43%-4.90% as of December 31, 2018 and 2019, respectively |  |  | 4,393,826 |  |  |  | 4,880,822 |  |  |  | 163,183 |
|  |  | 134,927,180 |  |  |  | 130,095,646 |  |  |  | 4,349,570 |
Less: unamortized arrangement fee |  |  | 128,083 |  |  |  | 10,292 |  |  |  | 344 |
|  |  | 134,799,097 |  |  |  | 130,085,354 |  |  |  | 4,349,226 |
Less: current portion |  |  | 10,779,034 |  |  |  | 5,017,970 |  |  |  | 167,769 |
|  | $ | 124,020,063 |  |  | $ | 125,067,384 |  |  | $ | 4,181,457 |
Longterm Bills Payable [member] |
Statement [LineItems] |
Summary of Borrowings |
| 2) | Long-term bills payable
|  | December 31
|  | 2018 |  | 2019
|  | NT$ |  | NT$ |  | US$ (Note 4)
China Bills Finance Corporation, repayable in February and March 2021, annual interest rates were 0.99% and 1.02%-1.05% as of December 31, 2018 and 2019, respectively |  | $ | 1,000,000 |  |  | $ | 2,800,000 |  |  | $ | 93,614 |
International Bills Finance Corporation, repayable in March 2021, annual interest rates were 1.00% and 1.02%-1.05% as of December 31, 2018 and 2019, respectively |  |  | 1,000,000 |  |  |  | 3,000,000 |  |  |  | 100,301 |
Ta Ching Bills Finance Corporation, repayable through January 2021 to March 2022, annual interest rates were 0.98% and 1.01%-1.03% as of December 31, 2018 and 2019, respectively |  |  | 1,100,000 |  |  |  | 3,100,000 |  |  |  | 103,644 |
Mega Bills Finance Corporation, repayable in March 2022, annual interest rate was 1.04% as of December 31, 2019 |  |  | - |  |  |  | 2,000,000 |  |  |  | 66,868 |
|  |  | 3,100,000 |  |  |  | 10,900,000 |  |  |  | 364,427 |
Less: unamortized discounts |  |  | 768 |  |  |  | 4,635 |  |  |  | 155 |
|  | $ | 3,099,232 |  |  | $ | 10,895,365 |  |  | $ | 364,272 |

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