INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of Income before Income Tax, Domestic and Foreign

The domestic and foreign components of income before provision for income taxes were as follows (in thousands):



	For the Year Ended December 31,
	2015			2014			2013
Domestic	$	164,105		$	44,737		$	85,775
Foreign	(54,459		)	(6,215		)	58,110
Total	$	109,646		$	38,522		$	143,885

Schedule of Components of Income Tax Expense (Benefit)

The provision for income taxes consisted of the following (in thousands):



	For the Year Ended December 31,
	2015			2014			2013
Current:
Federal	$	46,775		$	17,184		$	5,264
State	11,120			6,918			5,006
Foreign	5,719			10,428			6,930
	63,614			34,530			17,200
Deferred
Federal	12,254			33,858			20,574
State	2,766			1,840			2,074
Foreign	(13,090		)	(3,378		)	8,471
	1,930			32,320			31,119
Provision for income taxes	$	65,544		$	66,850		$	48,319

Schedule of Effective Income Tax Rate Reconciliation

The effective income tax rate varied from the amount computed using the statutory federal income tax rate as follows (in thousands):



	For the Year Ended December 31,
	2015		2014			2013
Tax expense at US statutory rate	$	38,376	$	13,483		$	50,360
State income taxes, net of federal benefit	8,449		7,429			4,052
Foreign rate differential	3,951		(2,916		)	(10,478		)
Non-deductible transaction costs	—		—			657
Uncertain tax position releases	—		—			(4,010		)
Uncertain tax position interest and penalties	32		2,217			457
Goodwill impairment	10,974		44,273			—
Other	3,762		2,364			7,281
Provision for income taxes	$	65,544	$	66,850		$	48,319

Schedule of Deferred Tax Assets and Liabilities

The components of the total net deferred tax assets and liabilities at December 31, 2015 and 2014 were as follows (in thousands):



	2015			2014
Deferred tax assets:
Workers compensation and other claims related accruals	$	15,316		$	15,904
Provision for doubtful accounts	12,654			8,921
Closure, post-closure and remedial liabilities	37,407			43,640
Accrued expenses	12,455			13,451
Accrued compensation	5,425			12,094
Net operating loss carryforwards(1)	41,191			46,740
Tax credit carryforwards(2)	25,040			29,347
Uncertain tax positions accrued interest and federal benefit	1,219			1,953
Stock-based compensation	615			489
Other	7,421			3,622
Total deferred tax assets	158,743			176,161
Deferred tax liabilities:
Property, plant and equipment	(221,969		)	(232,106		)
Permits and other intangible assets	(159,698		)	(155,326		)
Total deferred tax liabilities	(381,667		)	(387,432		)
Total net deferred tax liability before valuation allowance	(222,924		)	(211,271		)
Less valuation allowance	(30,916		)	(29,061		)
Net deferred tax liabilities	$	(253,840	)	$	(240,332	)

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(1)	As of December 31, 2015, the net operating loss carryforwards included (i) state net operating loss carryovers of $63.1 million which will begin to expire in 2016, (ii) federal net operating loss carryforwards of $72.0 million which will begin to expire in 2025, and (iii) foreign net operating loss carryforwards of $49.7 million which will begin to expire in 2016.


(2)	As of December 31, 2015, the foreign tax credit carryforwards of $25.0 million will expire between 2016 and 2024.

Summary of Income Tax Contingencies

The changes to unrecognized tax benefits (excluding related penalties and interest) from January 1, 2013 through December 31, 2015, were as follows (in thousands):



	2015			2014			2013
Unrecognized tax benefits as of January 1	$	2,537		$	1,304		$	3,543
Additions to current year tax positions	—			904			210
Additions to prior year tax positions	—			419			—
Settlements	(217		)	—			—
Statute expiration	—			—			(2,843		)
Foreign currency translation	(256		)	(90		)	394
Unrecognized tax benefits as of December 31	$	2,064		$	2,537		$	1,304