Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Components of Income (Loss) before Income Taxes

The components of income (loss) before income taxes consist of the following:



Year ended December 31,	2018			2017		2016
Income (loss) before income taxes:
U.S.	$	(419,964	)	$	49,903	$	150,942
Foreign	(49,231		)	7,575		21,600
Income (loss) before income taxes	$	(469,195	)	$	57,478	$	172,542

Income Tax Provision

The income tax provision consists of the following:



Year ended December 31,	2018				2017				2016
Current tax provision (benefit):
Federal		$	(7,991	)		$	27,043			$	46,846
State	1,901				5,455				8,512
Foreign	8,925				2,175				4,179
Total current tax provision	2,835				34,673				59,537
Deferred tax provision (benefit):
Federal	(23,956			)	(43,838			)	5,303
State	(7,640			)	(1,068			)	885
Foreign	(3,422			)	(5,082			)	(1,970			)
Total deferred tax (benefit) provision	(35,018			)	(49,988			)	4,218
Total income tax (benefit) provision		$	(32,183	)		$	(15,315	)		$	63,755

Reconciliation of Federal Statutory Rate to Effective Income Tax Rate

A reconciliation of the federal statutory rate to our effective income tax rate is shown below:



Year ended December 31,	2018		2017		2016
Federal statutory rate	21.0	%	35.0	%	35.0	%
Increases (decreases) in the rate resulting from:
State income taxes, net of federal income tax impact	1.4	%	4.3	%	3.7	%
Foreign income taxes	(0.1	)%	(8.2	)%	(4.3	)%
Valuation allowance	(0.5	)%	(1.9	)%	0.5	%
Tax Reform and other prior period adjustments	0.4	%	(60.2	)%	—	%
Goodwill and intangible asset impairment charges	(14.0	)%	—	%	—	%
Other	(1.3	)%	4.4	%	2.1	%
Effective income tax rate	6.9	%	(26.6	)%	37.0	%

Tax Effects On Deferred Tax Assets And Deferred Tax Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below:



December 31,	2018				2017
Deferred tax assets:
Employee benefit plans		$	25,240			$	23,181
Accrued liabilities not currently deductible	25,924				20,477
Finance charges	2,661				2,007
Capital leases	3,320				3,732
Allowance for losses on accounts receivable	3,988				4,043
Net operating loss carryforwards	25,422				16,536
Goodwill	1,048				—
Interest limitation	4,473				—
Other	10,325				4,311
Total deferred tax assets	102,401				74,287
Less: valuation allowances	(14,346			)	(12,726			)
Net deferred tax assets	88,055				61,561
Deferred tax liabilities:
Merchandise inventories	44,015				43,683
Goodwill	—				26,194
Property and equipment	34,926				10,669
Computer software	10,177				9,473
Insurance	767				243
Intangible assets	30,279				38,726
Withholding tax liabilities	7,963				—
Other	662				212
Total deferred tax liabilities	128,789				129,200
Net deferred tax liability		$	(40,734	)		$	(67,639	)

Reconciliation of Changes In Unrecognized Tax Benefits

A reconciliation of the changes in unrecognized tax benefits from the beginning to the end of the reporting period is as follows:



	2018				2017
Unrecognized tax benefits at January 1,		$	13,585			$	10,725
Increases for positions taken during current period	1,035				1,644
Increases for positions taken during prior periods	29				1,928
Decreases for positions taken during prior periods	(142			)	(712			)
Lapse of statute of limitations	(4,939			)	—
Settlements with taxing authorities	—				—
Unrecognized tax benefits at December 31,		$	9,568			$	13,585