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Commitments and Contingencies (Tables)

12 Months Ended

Aug. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum rental payments for operating leases

	Rail Cars				Vehicles				Equipment and Other				Total
	(Dollars in thousands)
2015	$	24,329			$	15,344			$	61,653			$	101,326
2016	23,286				10,568				40,635				74,489
2017	21,926				7,761				36,286				65,973
2018	17,027				5,309				28,349				50,685
2019	11,682				2,406				20,102				34,190
Thereafter	11,261				1,791				90,039				103,091
Total minimum future lease payments	$	109,511			$	43,179			$	277,064			$	429,754

Unrecorded unconditional purchase obligations disclosure

Minimum future payments required under these agreements as of August 31, 2014 are as follows:

	Payments Due by Period
	Total				Less than 1 Year				1 - 3 Years				3 - 5 Years				More than 5 Years
	(Dollars in thousands)
Long-term unconditional purchase obligations	$	485,739			$	68,008			$	124,367			$	87,809			$	205,555

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Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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Tabular disclosure of unconditional purchase obligations that are not recognized as a liability on the balance sheet, including the nature and significant terms of an unconditional purchase obligation; the amount of the fixed and determinable portion of the obligation as of the date of the latest balance sheet presented in the aggregate and, if determinable, for each of the five succeeding fiscal years; the nature of any variable components of the obligation; the amount purchased under the obligation (for example, the take-or-pay or throughput contract) for the reporting period; and may include the amount of imputed interest necessary to reduce the obligation to present value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

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