Acquisitions - Summary of Operating Information on Pro Forma Basis (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Feb. 28, 2017	Feb. 29, 2016
Business Combinations [Abstract]
Pro forma net sales	$ 390,169	$ 421,231
Pro forma net earnings	$ 27,064	$ 33,065
Pro forma earnings per share-diluted	$ 1.05	$ 1.29

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.

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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- Definition

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.

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