Acquisitions - Summary of Operating Information on Pro Forma Basis (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Business Combinations [Abstract]
Pro forma net sales	$ 152,607	$ 157,696	$ 300,370	$ 318,570
Pro forma net earnings	$ 9,828	$ 11,319	$ 18,179	$ 21,343
Pro forma earnings per share - diluted	$ 0.38	$ 0.43	$ 0.70	$ 0.82

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=25497992&loc=d3e1392-128463

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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.

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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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