Pension And Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2016

Pension And Postretirement Benefits

Pension And Postretirement Benefit Costs Included In Operating Expenses

	Three months ended				Six months ended
	June 30,				June 30,
	2016		2015		2016		2015
Pension cost:
Service cost – benefits earned during the period	$	278	$	300	$	556	$	599
Interest cost on projected benefit obligation		495		473		990		947
Expected return on assets		(780)		(826)		(1,558)		(1,652)
Amortization of prior service credit		(25)		(26)		(51)		(52)
Net pension (credit) cost	$	(32)	$	(79)	$	(63)	$	(158)
Postretirement cost:
Service cost – benefits earned during the period	$	48	$	56	$	96	$	111
Interest cost on accumulated postretirement benefit obligation		243		241		486		483
Expected return on assets		(89)		(105)		(178)		(210)
Amortization of prior service credit		(319)		(319)		(638)		(639)
Net postretirement (credit) cost	$	(117)	$	(127)	$	(234)	$	(255)
Combined net pension and postretirement (credit) cost	$	(149)	$	(206)	$	(297)	$	(413)