SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2019

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Results from Discontinued Operations

in thousands	2019	2018	2017
Discontinued Operations
Pretax earnings (loss)	$        (6,541)	$       (2,748)	$      12,959
Income tax (expense) benefit	1,700	712	(5,165)
Earnings (loss) on discontinued operations,
net of tax	$        (4,841)	$       (2,036)	$        7,794

Depreciation, Depletion, Accretion and Amortization Expense

in thousands	2019	2018	2017
Depreciation, Depletion, Accretion and Amortization
Depreciation	$      300,613	$     276,814	$     250,835
Depletion	22,421	23,260	19,342
Accretion	10,992	10,776	11,415
Amortization of leaseholds	29	472	608
Amortization of intangibles	40,541	34,924	23,765
Total	$      374,596	$     346,246	$     305,965

Fair Value Measurement on Recurring Basis

	Level 1 Fair Value
in thousands	2019	2018
Fair Value Recurring
Rabbi Trust
Mutual funds	$       22,883	$     19,164
Total	$       22,883	$     19,164

	Level 2 Fair Value
in thousands	2019	2018
Fair Value Recurring
Rabbi Trust
Money market mutual fund	$        1,340	$       1,015
Total	$        1,340	$       1,015

Liabilities Under Self-Insurance Program

dollars in thousands	2019	2018
Self-insurance Program
Self-insured liabilities (undiscounted)	$        69,069	$       68,912
Insured liabilities (undiscounted)	6,431	4,377
Discount rate	1.63%	2.93%
Amounts Recognized in Consolidated
Balance Sheets
Other accounts and notes receivable	$                 0	$            631
Investments and long-term receivables	5,931	3,932
Other current liabilities	(19,830)	(18,466)
Other noncurrent liabilities	(51,360)	(48,049)
Net liabilities (discounted)	$       (65,259)	$     (61,952)

Estimated Payments (Undiscounted) Under Self-Insurance Program

in thousands
Estimated Payments under Self-insurance Program
2020	$        22,348
2021	15,306
2022	10,742
2023	6,256
2024	3,604

Unrecognized Compensation Expense

	Unrecognized	Expected
	Compensation	Weighted-average
dollars in thousands	Expense	Recognition (Years)
Share-based Compensation
SOSARs 1	$          2,168	1.2
Performance shares	11,580	1.7
Restricted shares	8,003	1.8
Total/weighted-average	$        21,751	1.7

¹ Stock-Only Stock Appreciation Rights (SOSARs)

Pretax Compensation Expense

in thousands	2019	2018	2017
Employee Share-based Compensation Awards
Pretax compensation expense	$        30,067	$       23,250	$       24,367
Income tax benefits	7,682	5,940	6,226

Weighted-Average Common Shares Outstanding Assuming Dilution

in thousands	2019	2018	2017
Weighted-average common shares outstanding	132,300	132,393	132,513
Dilutive effect of
SOSARs	611	963	1,295
Other stock compensation plans	474	570	1,070
Weighted-average common shares outstanding,
assuming dilution	133,385	133,926	134,878

Antidilutive Common Stock Equivalents

in thousands	2019	2018	2017
Antidilutive common stock equivalents	105	162	79