Segment and Geographic Area Information (Tables)

12 Months Ended

Dec. 31, 2015

Segments, Geographical Areas [Abstract]

Schedule of Segment Reporting Information, by Segment

The following tables set forth results from the Company's North American Operations segment, Australian Operations segment and U.K./European Operations segment for the years ended December 31, 2015, 2014 and 2013 (dollars in thousands):

	December 31, 2015
	North American Operations		Australian Operations		U.K./European Operations			Total Operations
Operating revenues:
Freight revenues	$	949,028	$	146,850	$	309,236		$	1,405,114
Freight-related revenues	227,154		87,616		182,746			497,516
All other revenues	65,633		8,486		23,652			97,771
Total operating revenues	$	1,241,815	$	242,952	$	515,634		$	2,000,401
Income from operations	$	297,486	$	54,842	$	31,933		$	384,261
Depreciation and amortization	$	141,814	$	27,425	$	19,296		$	188,535
Loss on settlement of foreign currency forward purchase contracts	$	16,374	$	2,312	$	—		$	18,686
Interest expense, net	$	39,651	$	8,976	$	17,965		$	66,592
Provision for/(benefit from) income taxes	$	69,552	$	12,890	$	(6,548	)	$	75,894
Expenditures for additions to property & equipment, net of grants from outside parties	$	266,548	$	31,179	$	32,035		$	329,762

	December 31, 2014
	North American Operations		Australian Operations		U.K./European Operations			Total Operations
Operating revenues:
Freight revenues	$	1,008,236	$	243,705	$	—		$	1,251,941
Freight-related revenues	214,388		55,461		20,938			290,787
All other revenues	82,137		14,104		43			96,284
Total operating revenues	$	1,304,761	$	313,270	$	20,981		$	1,639,012
Income/(loss) from operations	$	333,194	$	90,396	$	(2,019	)	$	421,571
Depreciation and amortization	$	127,421	$	28,095	$	1,565		$	157,081
Interest expense, net	$	41,732	$	12,152	$	833		$	54,717
Provision for/(benefit from) income taxes	$	86,363	$	23,443	$	(2,699	)	$	107,107
Expenditures for additions to property & equipment, net of grants from outside parties	$	277,725	$	24,930	$	864		$	303,519

	December 31, 2013
	North American Operations		Australian Operations		U.K./European Operations			Total Operations
Operating revenues:
Freight revenues	$	917,971	$	259,393	$	—		$	1,177,364
Freight-related revenues	215,302		57,834		14,675			287,811
All other revenues	95,899		7,569		—			103,468
Total operating revenues	$	1,229,172	$	324,796	$	14,675		$	1,568,643
Income/(loss) from operations	$	286,164	$	95,016	$	(992	)	$	380,188
Depreciation and amortization	$	113,155	$	27,102	$	1,387		$	141,644
Interest expense, net	$	48,483	$	14,814	$	626		$	63,923
Provision for/(benefit from) income taxes	$	24,446	$	22,258	$	(408	)	$	46,296
Expenditures for additions to property & equipment, net of grants from outside parties	$	163,157	$	51,860	$	388		$	215,405

Property and Equipment by Segment

The following table sets forth the property and equipment recorded in the consolidated balance sheets as of December 31, 2015 and 2014 (dollars in thousands):

	December 31, 2015
	North American Operations		Australian Operations		U.K./European Operations		Total Operations
Property and equipment, net	$	3,433,669	$	465,123	$	316,271	$	4,215,063

Operating Revenues by Geographic Area

Operating revenues for each geographic area for the years ended December 31, 2015, 2014 and 2013 were as follows (dollars in thousands):

	2015				2014				2013
	Amount		% of Total		Amount		% of Total		Amount		% of Total
Operating revenues:
United States	$	1,143,056	57.1	%	$	1,188,084	72.5	%	$	1,100,334	70.2	%
Non-United States:
Australia	$	242,952	12.1	%	$	313,270	19.1	%	$	324,796	20.7	%
Canada	98,759		5.0	%	116,677		7.1	%	128,838		8.2	%
U.K.	340,747		17.0	%	—		—	%	—		—	%
Netherlands	119,421		6.0	%	17,693		1.1	%	12,687		0.8	%
Other	55,466		2.8	%	3,288		0.2	%	1,988		0.1	%
Total Non-United States	$	857,345	42.9	%	$	450,928	27.5	%	$	468,309	29.8	%
Total operating revenues	$	2,000,401	100.0	%	$	1,639,012	100.0	%	$	1,568,643	100.0	%

Property and Equipment by Geographic Area

Property and equipment for each geographic area as of December 31, 2015 and 2014 were as follows (dollars in thousands):

	2015				2014
	Amount		% of Total		Amount		% of Total
Property and equipment located in:
United States	$	3,202,963	76.0	%	$	3,003,299	79.3	%
Non-United States:
Australia	$	465,123	11.0	%	$	506,154	13.4	%
Canada	230,706		5.5	%	266,305		7.0	%
U.K.	303,210		7.2	%	—		—	%
Other	13,061		0.3	%	12,724		0.3	%
Total Non-United States	$	1,012,100	24.0	%	$	785,183	20.7	%
Total property and equipment, net	$	4,215,063	100.0	%	$	3,788,482	100.0	%