| Maturity analysis of undiscounted pension benefit |
| December 31 | ||||||||||||
| 2016 | 2017 | |||||||||||
| NT$ | NT$ | US$ (Note 4) | ||||||||||
| No later than 1 year | $ | 292,100 | $ | 291,152 | $ | 9,823 | ||||||
| Later than 1 year and not later than 5 years | 1,673,549 | 1,551,496 | 52,345 | |||||||||
| Later than 5 years | 17,129,585 | 16,507,747 | 556,941 | |||||||||
| $ | 19,095,234 | $ | 18,350,395 | $ | 619,109 | |||||||