Movements of the allowance for doubtful accounts were as follows:
|
|
|
Individually Assessed for Impairment |
|
|
Collectively Assessed for Impairment |
|
|
Total |
|
|||
|
|
|
NT$ |
|
|
NT$ |
|
|
NT$ |
|
|||
|
|
|
(In Millions) |
|
|||||||||
|
Balance on January 1, 2015 |
|
$ |
276 |
|
|
$ |
773 |
|
|
$ |
1,049 |
|
|
Add: Provision for doubtful accounts |
|
|
88 |
|
|
|
392 |
|
|
|
480 |
|
|
Deduct: Amounts written off |
|
|
— |
|
|
|
(195 |
) |
|
|
(195 |
) |
|
Balance on December 31, 2015 |
|
|
364 |
|
|
|
970 |
|
|
|
1,334 |
|
|
Add: Provision for doubtful accounts |
|
|
715 |
|
|
|
228 |
|
|
|
943 |
|
|
Deduct: Amounts written off |
|
|
(274 |
) |
|
|
(230 |
) |
|
|
(504 |
) |
|
Balance on December 31, 2016 |
|
|
805 |
|
|
|
968 |
|
|
|
1,773 |
|
|
Add: Provision for doubtful accounts |
|
|
535 |
|
|
|
43 |
|
|
|
578 |
|
|
Deduct: Amounts written off |
|
|
(15 |
) |
|
|
(219 |
) |
|
|
(234 |
) |
|
Balance on December 31, 2017 |
|
$ |
1,325 |
|
|
$ |
792 |
|
|
$ |
2,117 |
|