Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

The components of income before income taxes and income from equity investment for the years ended December 31, 2013, 2012 and 2011 were as follows (dollars in thousands):

	2013		2012		2011
United States	$	211,889	$	5,598	$	98,041
Foreign	106,498		77,680		59,974
Total	$	318,387	$	83,278	$	158,015

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The components of the provision for income taxes for the years ended December 31, 2013, 2012 and 2011 were as follows (dollars in thousands):

	2013		2012		2011
United States:
Current
Federal	$	6,571	$	3,582	$	5,652
State	6,031		3,752		3,686
Deferred
Federal	62		17,382		12,578
State	4,890		906		1,535
	17,554		25,622		23,451
Foreign:
Current	22,697		9,907		6,488
Deferred	6,045		10,873		8,592
	28,742		20,780		15,080
Total	$	46,296	$	46,402	$	38,531

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The following is a summary of the effective tax rate reconciliation for the years ended December 31, 2013, 2012 and 2011:

	2013		2012		2011
Tax provision at statutory rate	35.0	%	35.0	%	35.0	%
Effect of acquisitions/divestitures	—	%	24.8	%	(3.1	)%
Effect of foreign operations	(2.1	)%	(7.7	)%	(2.9	)%
State income taxes, net of federal income tax benefit	2.2	%	3.8	%	2.3	%
Benefit of track maintenance credit	(21.0	)%	—	%	(6.5	)%
Other, net	0.4	%	(0.3	)%	(0.4	)%
Effective income tax rate	14.5	%	55.6	%	24.4	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The components of net deferred income taxes as of December 31, 2013 and 2012 were as follows (dollars in thousands):

	2013			2012
Deferred tax assets:
Accruals and reserves not deducted for tax purposes until paid	$	20,183		$	15,824
Net operating loss carryforwards	14,577			52,863
Nonshareholder contributions	3,185			4,799
Deferred compensation	2,974			2,175
Postretirement benefits	811			2,328
Share-based compensation	6,348			11,328
Foreign tax credit	1,964			1,964
Track maintenance credit	221,278			129,486
Alternative minimum tax credit	1,592			1,356
Other	119			451
	273,031			222,574
Valuation allowance	(12,194		)	(8,613		)
Deferred tax liabilities:
Interest rate swaps	(13,985		)	7
Property basis difference	(1,029,492		)	(1,003,990		)
Other	(1,884		)	(1,843		)
Net deferred tax liabilities	$	(784,524	)	$	(791,865	)

Summary of Valuation Allowance [Table Text Block]

A reconciliation of the beginning and ending amount of the Company's valuation allowance is as follows (dollars in thousands):

	2013
Balance at beginning of year	$	8,613
Increase for state net operating losses	1,617
Increase for foreign tax credits	1,964
Balance at end of year	$	12,194

Summary of Income Tax Contingencies [Table Text Block]

A reconciliation of the beginning and ending amount of the Company’s liability for uncertain tax positions is as follows (dollars in thousands):

	2013		2012			2011
Balance at beginning of year	$	3,155	$	—		$	—
Increase for acquired subsidiary	—		3,370			—
Reductions for tax positions of prior years	—		(215		)	—
Balance at end of year	$	3,155	$	3,155		$	—

Summary of Income Tax Examinations [Table Text Block]

As of December 31, 2013, the following tax years remain open to examination by the major taxing jurisdictions to which the Company is subject:

	Open Tax Years
Jurisdiction	From		To
United States	2001	-	2013
Australia	2009	-	2013
Canada	2009	-	2013
Mexico	2008	-	2013
Netherlands	2012	-	2013
Belgium	2013	-	2013