Pension Plan and Postretirement Benefits Other Than Pension (Tables)

3 Months Ended

Mar. 31, 2015

Pension Plan and Postretirement Benefits Other Than Pension

Schedule of components of net periodic pension and other postretirement costs

	Pension Benefits					Other Postretirement Benefits
	Three months ended March 31,					Three months ended March 31,
	2015			2014		2015	2014
	(in thousands)
Components of net periodic benefit cost:
Service cost	$	3,047		2,725		228	180
Interest cost	2,154			2,153		99	99
Expected return on plan assets	(3,691		)	(3,413	)	—	—
Actuarial (gain) loss amortization	1,377			411		—	(4	)
Prior service cost amortization	115			130		5	14
Transition obligation amortization	1			1		—	—
Total(1)	$	3,003		2,007		332	289

(1) Approximately 60% of net periodic pension and other postretirement benefit costs are included in compensation and related costs on the consolidated statements of income, while the remainder is included in underwriting and distribution expense.