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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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- Definition

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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Period Type:	instant

- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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Note L - Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2013
Note L - Commitments and Contingencies (Details) [Line Items]
Letters of Credit Outstanding, Amount	$ 1,000,000
Operating Leases, Future Minimum Payments Due	39,578,000
Operating Leases, Rent Expense	5,500,000us-gaap_LeaseAndRentalExpense	5,200,000us-gaap_LeaseAndRentalExpense	4,700,000us-gaap_LeaseAndRentalExpense
Non Cancelable [Member]
Note L - Commitments and Contingencies (Details) [Line Items]
Operating Leases, Future Minimum Payments Due	14,800,000
Reasonably Assured [Member]
Note L - Commitments and Contingencies (Details) [Line Items]
Operating Leases, Future Minimum Payments Due	$ 24,800,000
Minimum [Member]
Note L - Commitments and Contingencies (Details) [Line Items]
Lessee Leasing Arrangements, Operating Leases, Renewal Term	3 years
Maximum [Member]
Note L - Commitments and Contingencies (Details) [Line Items]
Lessee Leasing Arrangements, Operating Leases, Renewal Term	5 years