| Changes in accumulated other comprehensive loss |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2016
|
|
2015
|
|
|
|
Total
|
|
Defined
benefit pension
plans
|
|
Other post-
employment
benefit plans
|
|
Total
|
|
Defined
benefit pension
plans
|
|
Other post-
employment
benefit plans
|
|
Balance, beginning of period
|
|
$
|
(38,442)
|
|
$
|
(38,898)
|
|
$
|
456
|
|
$
|
(57,367)
|
|
$
|
(57,654)
|
|
$
|
287
|
|
Amortization
|
|
|
(56)
|
|
|
45
|
|
|
(101)
|
|
|
16,183
|
|
|
16,216
|
|
|
(33)
|
|
Actuarial gains (losses)
|
|
|
(810)
|
|
|
(884)
|
|
|
74
|
|
|
2,742
|
|
|
2,540
|
|
|
202
|
|
Balance, end of period
|
|
$
|
(39,308)
|
|
$
|
(39,737)
|
|
$
|
429
|
|
$
|
(38,442)
|
|
$
|
(38,898)
|
|
$
|
456
|
|