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Unaudited Pro forma Adjusted Summary (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
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Jan. 31, 2014
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Jan. 31, 2013
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Jan. 31, 2014
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Jan. 31, 2013
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| Business Acquisition [Line Items] | ||||||||||
| Pro forma adjusted total revenue | $ 47,997 | [1] | $ 42,764 | [1] | $ 138,106 | [1] | $ 120,490 | [1] | ||
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