Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Taxes [Abstract]

Schedule Of Components Of Income And Loss From Continuing Operations Before Income Taxes

	Years ended December 31,
	2020		2019		2018
Domestic	$	(260,117)	$	(81,443)	$	(448,575)
Foreign		(35,159)		(936)		(21,831)
	$	(295,276)	$	(82,379)	$	(470,406)

Schedule Of Components Of Income Tax Expense (Benefit)

		Years ended December 31,
	2020		2019		2018
Current:
Federal	$	(36,506)	$	-	$	-
State		1,033		1,573		2,118
Foreign		8,498		(3,359)		14,856
		(26,975)		(1,786)		16,974
Deferred:
Federal		17,155		1,792		(66,039)
State		(638)		1,622		(4,161)
Foreign		(3,470)		(6,254)		10,223
		13,047		(2,840)		(59,977)
	$	(13,928)	$	(4,626)	$	(43,003)

Schedule Of Effective Income Tax Rate Reconciliation

	Years ended December 31,
	2020		2019		2018
Computed expected tax benefit	$	(62,008)	$	(17,513)	$	(98,785)
Increase (decrease) resulting from
State and foreign income taxes		12,604		10,970		10,437
Reduction in value of assets		-		(233)		27,680
Valuation allowance		32,890		21,353		-
Other		2,586		(19,203)		17,665
Income tax benefit	$	(13,928)	$	(4,626)	$	(43,003)

Schedule Of Deferred Tax Assets and Liabilities

	December 31,
	2020		2019
Deferred tax assets:
Allowance for doubtful accounts	$	1,713	$	1,291
Operating loss and tax credit carryforwards		150,426		136,647
Compensation and employee benefits		27,625		35,532
Decommissioning liabilities		30,960		29,405
Operating leases		2,792		1,002
Other		34,578		24,903
		248,094		228,780
Valuation allowance		(139,106)		(84,741)
Net deferred tax assets		108,988		144,039
Deferred tax liabilities:
Property, plant and equipment		69,510		114,024
Notes receivable		12,977		12,977
Goodwill and other intangible assets		23,920		20,285
Other		7,869		-
Deferred tax liabilities		114,276		147,286
Net deferred tax liability	$	5,288	$	3,247

Summary Of Activity In Unrecognized Tax Benefits

	Years ended December 31,
	2020		2019		2018
Unrecognized tax benefits at beginning of period	$	13,206	$	30,558	$	30,656
Additions based on tax positions related to prior years		1,757		2,500		1,899
Reductions based on tax positions related to prior years		-		-		(1,864)
Reductions as a result of a lapse of the applicable statute of limitations		(757)		-		(133)
Reductions relating to settlements with taxing authorities		(1,000)		(19,852)		-
Unrecognized tax benefits at end of period	$	13,206	$	13,206	$	30,558