BENEFIT PLANS (Tables)

6 Months Ended

Jun. 30, 2017

Pension Benefits [Member]

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost

PENSION BENEFITS	Three Months Ended		Six Months Ended
	June 30		June 30
in thousands	2017	2016	2017	2016
Components of Net Periodic Benefit Cost
Service cost	$        1,654	$        1,336	$        3,308	$        2,672
Interest cost	9,058	9,126	18,115	18,252
Expected return on plan assets	(12,096)	(12,890)	(24,192)	(25,781)
Amortization of prior service cost (credit)	335	(10)	670	(21)
Amortization of actuarial loss	1,823	1,541	3,647	3,082
Net periodic pension benefit cost (credit)	$           774	$          (897)	$        1,548	$       (1,796)
Pretax reclassifications from AOCI included in
net periodic pension benefit cost	$        2,158	$        1,531	$        4,317	$        3,061

Other Postretirement Benefits [Member]

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost

OTHER POSTRETIREMENT BENEFITS	Three Months Ended		Six Months Ended
	June 30		June 30
in thousands	2017	2016	2017	2016
Components of Net Periodic Benefit Cost
Service cost	$           291	$           280	$           583	$           561
Interest cost	315	303	630	605
Amortization of prior service credit	(1,059)	(1,059)	(2,118)	(2,118)
Amortization of actuarial gain	(396)	(437)	(793)	(875)
Net periodic postretirement benefit credit	$          (849)	$          (913)	$       (1,698)	$       (1,827)
Pretax reclassifications from AOCI included in
net periodic postretirement benefit credit	$       (1,455)	$       (1,496)	$       (2,911)	$       (2,993)