INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2014

INCOME TAXES

Schedule of components of the income tax expense

$s in thousands	2014			2013			2012
Current:
U.S. Federal	$	13,767		$	14,769		$	13,989
State		2,492			2,241			1,905
Foreign		4,521			3,623			873
Total current		20,780			20,633			16,767
Deferred:
U.S. Federal		2,721			(2,068	)		(270	)
State		(155	)		(218	)		79
Foreign		(532	)		(351	)		(517	)
Total deferred		2,034			(2,637	)		(708	)
Income tax expense	$	22,814		$	17,996		$	16,059

Schedule of reconciliation between the effective income tax rate and the applicable statutory federal and state income tax rate

	2014			2013			2012
Taxes computed at statutory rate		35.0	%		35.0	%		35.0	%
State income taxes (net of federal income tax benefit)		2.7			2.7			3.3
Non-deductible transaction costs		1.5			—			—
Foreign rate differential		(2.0	)		(2.0	)		(0.3	)
Other		0.2			0.2			0.5
		37.4	%		35.9	%		38.5	%

Schedule of components of the total net deferred tax assets and liabilities

$s in thousands	2014			2013
Deferred tax assets:
Net operating loss and foreign tax credit carry forwards	$	3,195		$	6,270
Accruals, allowances and other		4,432			1,708
Environmental compliance and other site related costs		10,305			554
Unrealized foreign exchange gains and losses		1,180			636
Unrealized gains and losses on interest rate hedge		1,098			—
Total deferred tax assets		20,210			9,168
Less: valuation allowance		(2,718	)		(6,253	)
Net deferred tax assets		17,492			2,915
Deferred tax liabilities:
Property and equipment		(110,652	)		(6,752	)
Intangible assets		(8,305	)		(9,425	)
Other		(1,623	)		(176	)
Total deferred tax liabilities		(120,580	)		(16,353	)
Net deferred tax liability	$	(103,088	)	$	(13,438	)

Schedule of domestic and foreign components of Income (loss) before income taxes

$s in thousands	2014		2013		2012
Domestic		46,017		37,958		40,425
Foreign		15,033		12,189		1,293
Income before income taxes	$	61,050	$	50,147	$	41,718

Schedule of changes to unrecognized tax benefits (excluding related penalties and interest)

$s in thousands	2014			2013		2012
Unrecognized tax benefits, beginning of year	$	438		$	438	$	438
Gross increases in tax positions in prior periods		—			—		—
Gross increases during the current period		—			—		—
Settlements		—			—		—
Lapse of statute of limitations		(438	)		—		—
Unrecognized tax benefits, end of year	$	—		$	438	$	438