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Summarized Results from Discontinued Operations (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Apr. 30, 2014
|
Jan. 31, 2014
|
Oct. 31, 2013
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Jul. 31, 2013
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Apr. 30, 2013
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Jan. 31, 2013
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Oct. 31, 2012
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Jul. 31, 2012
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Apr. 30, 2014
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Apr. 30, 2013
|
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||
| Revenues from discontinued operations | $ 17,011 | $ 13,484 | ||||||||
| Loss from discontinued operations before income taxes | (1,106) | (16,224) | ||||||||
| Income tax expense | 22 | 25 | ||||||||
| Net loss from discontinued operations | (1,128) | (16,249) | ||||||||
| Estimated loss on disposal of discontinued operations, net of tax | (9,192) | |||||||||
| Net loss from discontinued operations, net of tax | $ (11,448) | $ 430 | $ 420 | $ 278 | $ (124) | $ (1,020) | $ (2,222) | $ (12,883) | $ (10,320) | $ (16,249) |