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Commitments and Contingencies (Tables)

12 Months Ended

Apr. 30, 2014

Commitments And Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments under Non-Cancellable Operating Leases

Future minimum lease payments under non-cancellable operating leases as of April 30, 2014 are as follows:

2015		$	11,279
2016			10,175
2017			9,453
2018			9,678
2019			11,723
Thereafter			98,562
Total minimum lease payments		$	150,870

Schedule of Total Expected Environmental Remediation Payments for Succeeding Year

The total expected environmental remediation payments, in today’s dollars, for each of the five succeeding fiscal years and the aggregate amount thereafter are as follows:

2015		$	45
2016			3,399
2017			1,029
2018			27
2019			42
Thereafter			750
Total		$	5,292

Reconciliation of Expected Aggregate Uninflated, Undiscounted Environmental Remediation Liability to Amount Recognized in Statement of Financial Position

A reconciliation of the expected aggregate uninflated, undiscounted environmental remediation liability to the amount recognized in the statement of financial position as of April 30, 2014 is as follows:

Undiscounted liability		$	5,292
Plus inflation / (discount)			28
Liability balance – April 30, 2014		$	5,320

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- Definition

Tabular disclosure of future environmental remediation payments as of the latest balance sheet presented, in aggregate and for each of the five succeeding fiscal years and thereafter.

+ References

No definition available.

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- Definition

Reconciliation of the environmental remediation liability to the undiscounted environmental remediation liability as of the latest balance sheet date.

+ References

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- Definition

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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