v3.20.2
Pension And Postretirement Benefits (Tables)
6 Months Ended
Jun. 30, 2020
Pension And Postretirement Benefits  
Pension and postretirement benefit costs included in operating expenses [Table Text Block]

 

Three months ended

 

Six months ended

 

June 30,

 

June 30,

 

2020

 

2019

 

2020

 

2019

Pension cost:

 

 

 

 

 

 

 

 

 

 

 

Service cost – benefits earned during the period

$

258

 

$

243

 

$

515

 

$

483

Interest cost on projected benefit obligation

 

422

 

 

508

 

 

844

 

 

1,057

Expected return on assets

 

(890)

 

 

(880)

 

 

(1,779)

 

 

(1,731)

Amortization of prior service credit

 

(29)

 

 

(24)

 

 

(57)

 

 

(57)

Actuarial (gain) loss

 

-

 

 

1,699

 

 

-

 

 

2,131

Net pension (credit) cost

$

(239)

 

$

1,546

 

$

(477)

 

$

1,883

 

 

 

 

 

 

 

 

 

 

 

 

Postretirement cost:

 

 

 

 

 

 

 

 

 

 

 

Service cost – benefits earned during the period

$

13

 

$

18

 

$

26

 

$

36

Interest cost on accumulated postretirement benefit obligation

 

104

 

 

186

 

 

208

 

 

372

Expected return on assets

 

(45)

 

 

(56)

 

 

(89)

 

 

(112)

Amortization of prior service credit

 

(582)

 

 

(426)

 

 

(1,164)

 

 

(852)

Net postretirement (credit) cost

$

(510)

 

$

(278)

 

$

(1,019)

 

$

(556)

 

 

 

 

 

 

 

 

 

 

 

 

Combined net pension and postretirement (credit) cost

$

(749)

 

$

1,268

 

$

(1,496)

 

$

1,327