BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2017



in thousands	2017	2016
Change in Benefit Obligation
Projected benefit obligation at beginning of year	$ 1,006,674	$ 988,453
Service cost	6,715	5,343
Interest cost	36,230	36,505
Plan amendment 1	10,869	0
Actuarial (gain) loss	81,969	24,675
Benefits paid	(51,234)	(48,302)
Projected benefit obligation at end of year	$ 1,091,223	$ 1,006,674
Change in Fair Value of Plan Assets
Fair value of assets at beginning of year	$ 749,515	$ 745,686
Actual return on plan assets	122,597	42,555
Employer contribution	20,023	9,576
Benefits paid	(51,234)	(48,302)
Fair value of assets at end of year	$ 840,901	$ 749,515
Funded status	(250,322)	(257,159)
Net amount recognized	$ (250,322)	$ (257,159)
Amounts Recognized in the Consolidated
Balance Sheets
Noncurrent assets	$ 4,605	$ 0
Current liabilities	(9,478)	(9,375)
Noncurrent liabilities	(245,449)	(247,784)
Net amount recognized	$ (250,322)	$ (257,159)
Amounts Recognized in Accumulated
Other Comprehensive Income
Net actuarial loss	$ 250,581	$ 250,099
Prior service cost (credit)	9,167	(361)
Total amount recognized	$ 259,748	$ 249,738



dollars in thousands	2017	2016	2015
Components of Net Periodic Pension
Benefit Cost
Service cost	$ 6,715	$ 5,343	$ 4,851
Interest cost	36,230	36,505	44,065
Expected return on plan assets	(48,506)	(51,562)	(54,736)
Settlement charge	0	0	2,031
Amortization of prior service cost (credit)	1,340	(43)	48
Amortization of actuarial loss	7,397	6,163	21,641
Net periodic pension benefit cost (credit)	$ 3,176	$ (3,594)	$ 17,900
Changes in Plan Assets and Benefit
Obligations Recognized in Other
Comprehensive Income
Net actuarial loss (gain)	$ 7,879	$ 33,682	$ (3,615)
Prior service cost	10,868	0	0
Reclassification of actuarial loss	(7,397)	(6,163)	(23,672)
Reclassification of prior service (cost) credit	(1,340)	43	(48)
Amount recognized in other comprehensive
income	$ 10,010	$ 27,562	$ (27,335)
Amount recognized in net periodic pension
benefit cost and other comprehensive
income	$ 13,186	$ 23,968	$ (9,435)
Assumptions
Weighted-average assumptions used to
determine net periodic benefit cost for
years ended December 31
Discount rate — PBO	4.29%	4.55%	4.14%
Discount rate — service cost	4.63%	4.68%	4.14%
Discount rate — interest cost	3.63%	3.79%	4.14%
Expected return on plan assets	7.00%	7.50%	7.50%
Weighted-average assumptions used to
determine benefit obligation at
December 31
Discount rate	3.72%	4.29%	4.54%

Fair Value Measurements at December 31, 2017



in thousands	Level 1 1	Level 2 1	Level 3 1	Total
Asset Category
Debt securities	$ 0	$ 178,512	$ 0	$ 178,512
Investment funds
Commodity funds	0	17,041	0	17,041
Equity funds	1,089	143,010	0	144,099
Investments in the fair value hierarchy	$ 1,089	$ 338,563	$ 0	$ 339,652
Interest in common/collective trusts (at NAV)				416,397
Venture capital and partnerships (at NAV)				84,852
Total pension plan assets				$ 840,901

Fair Value Measurements at December 31, 2016



in thousands	Level 1 1	Level 2 1	Level 3 1	Total
Asset Category
Debt securities	$ 0	$ 162,894	$ 0	$ 162,894
Investment funds
Commodity funds	0	16,594	0	16,594
Equity funds	530	124,407	0	124,937
Investments in the fair value hierarchy	$ 530	$ 303,895	$ 0	$ 304,425
Interest in common/collective trusts (at NAV)				358,345
Venture capital and partnerships (at NAV)				86,745
Total pension plan assets				$ 749,515


1	See Note 1 under the caption Fair Value Measurements for a description of the fair value hierarchy.



in thousands			Pension
Estimated Future Benefit Payments
2018			$ 56,227
2019			57,099
2020			58,382
2021			59,356
2022			60,948
2023-2027			309,844



in thousands	2017	2016
Change in Benefit Obligation
Projected benefit obligation at beginning of year	$ 45,546	$ 48,605
Service cost	1,167	1,123
Interest cost	1,260	1,209
Actuarial loss (gain)	378	(111)
Benefits paid	(4,871)	(5,280)
Projected benefit obligation at end of year	$ 43,480	$ 45,546
Change in Fair Value of Plan Assets
Fair value of assets at beginning of year	$ 0	$ 0
Actual return on plan assets	0	0
Fair value of assets at end of year	$ 0	$ 0
Funded status	$ (43,480)	$ (45,546)
Net amount recognized	$ (43,480)	$ (45,546)
Amounts Recognized in the Consolidated
Balance Sheets
Current liabilities	$ (5,624)	$ (6,013)
Noncurrent liabilities	(37,856)	(39,533)
Net amount recognized	$ (43,480)	$ (45,546)
Amounts Recognized in Accumulated
Other Comprehensive Income
Net actuarial gain	$ (20,757)	$ (22,685)
Prior service credit	(15,456)	(19,692)
Total amount recognized	$ (36,213)	$ (42,377)



dollars in thousands	2017	2016	2015
Components of Net Periodic Postretirement
Benefit Cost
Service cost	$ 1,167	$ 1,123	$ 1,894
Interest cost	1,260	1,209	2,485
Amortization of prior service credit	(4,236)	(4,236)	(4,232)
Amortization of actuarial (gain) loss	(1,587)	(1,751)	37
Net periodic postretirement benefit cost (credit)	$ (3,396)	$ (3,655)	$ 184
Changes in Plan Assets and Benefit
Obligations Recognized in Other
Comprehensive Income
Net actuarial loss (gain)	$ 342	$ (111)	$ (35,209)
Reclassification of actuarial gain (loss)	1,587	1,751	(37)
Reclassification of prior service credit	4,236	4,236	4,232
Amount recognized in other comprehensive
income	$ 6,165	$ 5,876	$ (31,014)
Amount recognized in net periodic
postretirement benefit cost and other
comprehensive income	$ 2,769	$ 2,221	$ (30,830)
Assumptions
Weighted-average assumptions used to
determine net periodic benefit cost for
years ended December 31
Discount rate — PBO	3.59%	3.69%	3.50%
Discount rate — service cost	3.96%	3.77%	3.50%
Discount rate — interest cost	2.89%	2.81%	3.50%
Weighted-average assumptions used to
determine benefit obligation at
December 31
Discount rate	3.33%	3.58%	3.69%



in thousands			Postretirement
Estimated Future Benefit Payments
2018			$ 5,624
2019			5,431
2020			5,201
2021			4,859
2022			4,523
2023–2027			17,359



in thousands			Postretirement
Participants Contributions
2015			$ 2,031
2016			2,085
2017			2,025