Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
OPERATING REVENUES	$ 542,219,000	$ 414,563,000	$ 939,249,000	$ 790,842,000
OPERATING EXPENSES:
Labor and benefits	165,296,000	115,871,000	297,414,000	232,027,000
Equipment rents	43,483,000	19,857,000	65,515,000	38,932,000
Purchased services	56,177,000	24,257,000	80,558,000	52,396,000
Depreciation and amortization	48,048,000	38,212,000	90,265,000	75,853,000
Diesel fuel used in train operations	37,895,000	37,379,000	67,592,000	79,314,000
Electricity used in train operations	4,977,000	404,000	5,366,000	472,000
Casualties and insurance	10,038,000	12,737,000	18,561,000	22,369,000
Materials	26,929,000	19,221,000	45,624,000	35,515,000
Trackage rights	22,172,000	14,021,000	35,505,000	26,287,000
Net gain on sale of assets	(490,000)	(1,369,000)	(807,000)	(2,207,000)
Other expenses	28,243,000	23,864,000	61,585,000	44,900,000
Total operating expenses	442,768,000	304,454,000	767,178,000	605,858,000
INCOME FROM OPERATIONS	99,451,000	110,109,000	172,071,000	184,984,000
Interest income	124,000	241,000	150,000	1,275,000
Interest expense	(17,772,000)	(17,814,000)	(31,280,000)	(31,455,000)
Loss on settlement of foreign currency forward purchase contracts	0	0	(18,686,000)	0
Other income, net	334,000	759,000	648,000	1,395,000
Income before income taxes	82,137,000	93,295,000	122,903,000	156,199,000
Provision for income taxes	(29,300,000)	(32,567,000)	(46,162,000)	(55,467,000)
Net income	$ 52,837,000	$ 60,728,000	$ 76,741,000	$ 100,732,000
Basic earnings per common share	$ 0.94	$ 1.10	$ 1.37	$ 1.83
Weighted average shares - Basic	55,976	55,054	55,902	54,949
Diluted earnings per common share	$ 0.92	$ 1.07	$ 1.34	$ 1.77
Weighted average shares - Diluted	57,143	56,948	57,132	56,910