Pension Plan and Postretirement Benefits Other Than Pension (Tables)

9 Months Ended

Sep. 30, 2016

Pension Plan and Postretirement Benefits Other Than Pension

Schedule of components of net periodic pension and other postretirement costs

						Other								Other
	Pension Benefits				Postretirement Benefits				Pension Benefits				Postretirement Benefits
	Three months ended September 30,				Three months ended September 30,				Nine months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015		2016		2015		2016		2015
	(in thousands)								(in thousands)
Components of net periodic benefit cost:
Service cost		3,050		3,020		185		227		9,149		9,061		555		683
Interest cost		2,358		2,105		91		99		7,074		6,315		275		297
Expected return on plan assets		(3,482)		(3,628)		—		—		(10,445)		(10,884)		—		—
Actuarial (gain) loss amortization		1,554		1,293		(38)		—		4,661		3,879		(115)		—
Prior service cost amortization		93		115		1		5		280		345		3		15
Transition obligation amortization		1		1		—		—		3		3		—		—
Curtailment gain		—		—		(8,475)		—		—		—		(8,475)		—
Total (1)	$	3,574		2,906		(8,236)		331		10,722		8,719		(7,757)		995

(1) For the three months ended September 30, 2016, $(1.5) million and $(3.2) million of net periodic pension and other postretirement benefit costs were included in compensation and related costs and underwriting and distribution expense, respectively.  For the nine months ended September 30, 2016, $3.1 million and $(0.3) million of net periodic pension and other postretirement benefit costs were included in compensation and related costs and underwriting and distribution expense, respectively.