INCOME TAXES (Sources and Tax Effects of Differences Between Benefit from Income Taxes and Amount Computed by Applying Federal Statutory Income Tax Rate to Losses from Continuing Operations before Income Taxes) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Item Effected [Line Items]
Income tax expense at the federal statutory tax rate of 35%		$ 191,540	$ 114,750	$ 104,594
Statutory depletion		(32,230)	(27,702)	(25,774)
State and local income taxes, net of federal income tax benefit	[1]	5,283	5,945	15,017
U.S. production deduction		(8,790)	(5,099)	0
Foreign tax credit carryforward		(6,513)	6,486	0
Permanently reinvested foreign earnings		(4,578)	(6,396)	0
Share-based compensation	[2]	(22,443)	0	0
Other, net		2,582	6,959	(2,145)
Total income tax expense		$ 124,851	$ 94,943	$ 91,692
Income tax expense at the federal statutory tax rate of 35%, Rate		35.00%	35.00%	35.00%
Statutory depletion, Rate		(5.90%)	(8.40%)	(8.60%)
State and local income taxes, net of federal income tax benefit, Rate	[1]	1.00%	1.80%	5.00%
U.S. production deduction, Rate		(1.60%)	(1.60%)	(0.00%)
Foreign tax credit carryforwards impairment, Rate		(1.20%)	2.00%	0.00%
Permanently reinvested foreign earnings, Rate		(0.80%)	(2.00%)	0.00%
Share-based compensation, Rate	[2]	(4.10%)	(0.00%)	(0.00%)
Other, net, Rate		0.40%	2.20%	(0.70%)
Total Effective tax rate		22.80%	29.00%	30.70%
Accounting Standards Update 2016-09 [Member]
Item Effected [Line Items]
State and local income taxes, net of federal income tax benefit		$ 2,404

[1] The 2016 amount includes $2,404 thousand of benefit related to the early adoption of ASU 2016-09.

[2] As discussed in Note 1, we early adopted ASU 2016-09 as of December 31, 2016.