Acquisition - Pro Forma Results of Operations (Detail) - Klein Associates Inc. [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Oct. 31, 2015	Oct. 31, 2015
Business Acquisitions Pro Forma Information [Line Items]
Revenues	$ 17,000	$ 45,061
Net loss	$ (6,540)	$ (14,111)
Basic	$ (0.54)	$ (1.17)
Diluted	$ (0.54)	$ (1.17)

Business Acquisitions Pro Forma Information [Line Items]

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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