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Pension Plan and Postretirement Benefits Other Than Pension (Tables)
 3 Months Ended
Mar. 31, 2017
Pension Plan and Postretirement Benefits Other Than Pension  
Schedule of components of net periodic pension and other postretirement costs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Other

 

 

 

Pension Benefits

 

Postretirement Benefits

 

 

 

Three months ended March 31, 

 

Three months ended March 31, 

 

 

 

2017

 

2016

 

2017

 

2016

 

 

 

(in thousands)

 

Service cost

 

 

2,726

 

2,993

 

 —

 

185

 

Interest cost

 

 

1,654

 

2,439

 

15

 

92

 

Expected return on plan assets

 

 

(2,559)

 

(3,536)

 

 —

 

 —

 

Actuarial (gain) loss amortization

 

 

1,265

 

1,638

 

(45)

 

(39)

 

Prior service cost amortization

 

 

31

 

94

 

(1)

 

 1

 

Transition obligation amortization

 

 

 1

 

 1

 

 —

 

 —

 

 

 

 

 

 

 

 

 

 

 

 

Total (1)

 

 

3,118

 

3,629

 

(31)

 

239

 

For the three months ended March 31, 2017, $1.9 million and $1.2 million of net periodic pension and other postretirement benefit costs were included in compensation and related costs and underwriting and distribution expense, respectively.