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Consolidated Statements of Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2012
Income Statement [Abstract]
Income (loss) from discontinued operations, income tax benefit	$ 0	$ 0	$ 412
(Loss) gain on disposal of discontinued operations, income tax provision	$ 0	$ 0	$ 489

X

- Definition

Income tax expense or benefit attributable to Income or Loss from discontinued operations during the phase-out period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32672-109319



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- Definition

Amount of tax expense or benefit on gain (loss), not previously recognized, resulting from the sale of a business component.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 10

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-Publisher FASB

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