SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2013

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Depreciation, Depletion, Accretion and Amortization Expense

in thousands	2013	2012	2011
Depreciation, Depletion, Accretion and Amortization
Depreciation	$      271,180	$   301,146	$   328,072
Depletion	13,028	10,607	11,195
Accretion	10,685	7,956	8,195
Amortization of leaseholds	483	381	225
Amortization of intangibles	11,732	11,869	14,032
Total	$      307,108	$   331,959	$   361,719

Fair Value Measurement on Recurring Basis

	Level 1
in thousands	2013	2012
Fair Value Recurring
Rabbi Trust
Mutual funds	$       15,255	$     13,349
Equities	12,828	9,843
Total	$       28,083	$     23,192

	Level 2
in thousands	2013	2012
Fair Value Recurring
Rabbi Trust
Common/collective trust funds	$        1,244	$       2,265
Total	$        1,244	$       2,265

Assets Subject to Fair Value Measurement on Nonrecurring Basis

	2012
		Impairment
in thousands	Level 3	Charges
Fair Value Nonrecurring
Assets held for sale	$     10,559	$       1,738
Totals	$     10,559	$       1,738

Summary of Company Owned Life Insurance Cash Surrender Value, Loans Outstanding and Net Values Included in Other Noncurrent Assets

in thousands	2013	2012
Company Owned Life Insurance
Cash surrender value	$        44,586	$     41,351
Loans outstanding	44,566	41,345
Net value included in noncurrent assets	$               20	$              6

Summary Of Recognized Deferred Revenue

in thousands	2013	2012	2011
Revenue amortized from deferred revenue	$          1,996	$            0	$            0
Purchaser's proceeds from sale of production	(6,197)	0	0
Decrease to net sales and gross profit	$         (4,201)	$            0	$            0

Summary of Estimated Future Compensation Cost Related to Share-Based Awards Granted to Employees Under Long-Term Incentive Plans

	Unrecognized	Expected
	Compensation	Weighted-average
dollars in thousands	Expense	Recognition (Years)
Share-based Compensation
SOSARs 1	$          2,825	1.6
Performance and restricted shares	19,498	2.6
Total/weighted-average	$        22,323	2.5

1 Stock-Only Stock Appreciation Rights (SOSARs)

Pretax Compensation Expense Related to Employee Share-based Compensation Awards and Related Income Tax Benefits

in thousands	2013	2012	2011
Employee Share-based Compensation Awards
Pretax compensation expense	$        20,187	$     15,491	$     17,537
Income tax benefits	7,833	6,011	6,976

Liabilities Under Self-Insurance Program

dollars in thousands	2013	2012
Self-insurance Program
Self-insured liabilities (undiscounted)	$        50,538	$     48,019
Insured liabilities (undiscounted)	17,497	15,054
Discount rate	0.98%	0.51%
Amounts Recognized in Consolidated
Balance Sheets
Investments and long-term receivables	$        16,917	$     14,822
Other accrued liabilities	(16,657)	(17,260)
Other noncurrent liabilities	(49,148)	(44,902)
Net liabilities (discounted)	$       (48,888)	$    (47,340)

Estimated Payments (Undiscounted) Under Our Self-Insurance Program

in thousands
Estimated Payments under Self-insurance Program
2014	$        22,151
2015	12,749
2016	8,229
2017	5,579
2018	4,051

Weighted-Average Common Shares Outstanding

in thousands	2013	2012	2011
Weighted-average common shares outstanding	130,272	129,745	129,381
Dilutive effect of
Stock options/SOSARs	461	0	0
Other stock compensation plans	734	0	0
Weighted-average common shares outstanding,
assuming dilution	131,467	129,745	129,381

Antidilutive Common Stock Equivalents

in thousands	2013	2012	2011
Antidilutive common stock equivalents	2,895	4,762	5,845