OTHER COMPREHENSIVE INCOME (Tables)

12 Months Ended

Dec. 31, 2020

OTHER COMPREHENSIVE INCOME [Abstract]

Accumulated Other Comprehensive Income, Net of Tax

in thousands	2020	2019	2018
AOCI
Interest rate hedges	$       (23,943)	$     (10,953)	$     (11,180)
Pension and postretirement plans	(157,362)	(186,785)	(161,035)
Total	$     (181,305)	$   (197,738)	$   (172,215)

Changes in Accumulated Other Comprehensive Income, Net of Tax

		Pension and
	Interest Rate	Postretirement
in thousands	Hedges	Benefit Plans	Total
AOCI
Balances at December 31, 2017	$       (11,438)	$   (138,028)	$   (149,466)
Released stranded tax effects ASU 2018-02	(2,464)	(27,165)	(29,629)
Balances at January 1, 2018, due to reclassification	$       (13,902)	$   (165,193)	$   (179,095)
Other comprehensive income (loss)
before reclassifications	2,496	(207)	2,289
Amounts reclassified from AOCI	226	4,365	4,591
Net OCI changes	2,722	4,158	6,880
Balances at December 31, 2018	$       (11,180)	$   (161,035)	$   (172,215)
Other comprehensive income (loss)
before reclassifications	0	(26,892)	(26,892)
Amounts reclassified from AOCI	227	1,142	1,369
Net OCI changes	227	(25,750)	(25,523)
Balances at December 31, 2019	$       (10,953)	$   (186,785)	$   (197,738)
Other comprehensive income (loss)
before reclassifications	(14,679)	6,366	(8,313)
Amounts reclassified from AOCI	1,689	23,057	24,746
Net OCI changes	(12,990)	29,423	16,433
Balances at December 31, 2020	$       (23,943)	$   (157,362)	$   (181,305)

Amounts Reclassified from Accumulated Other Comprehensive Income to Earnings

in thousands	2020	2019	2018
Amortization of Interest Rate Hedge Losses
Interest expense	$          2,286	$           307	$           306
Benefit from income taxes	(597)	(80)	(80)
Total	$          1,689	$           227	$           226
Amortization of Pension and Postretirement Plan
Actuarial Loss and Prior Service Cost
Other nonoperating expense	$        31,200	$        1,545	$        5,906
Benefit from income taxes	(8,143)	(403)	(1,541)
Total	$        23,057	$        1,142	$        4,365
Total reclassifications from AOCI to earnings	$        24,746	$        1,369	$        4,591