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Shareholders' Equity - Additional Information (Detail) - USD ($)	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014	Dec. 19, 2014	Apr. 20, 2012	Oct. 20, 2008
Statement of Stockholders' Equity [Abstract]
Repurchase of common stock through a stock repurchase program						$ 5,000,000
Common stock shares repurchased	718,511
Common stock average price, repurchased	$ 13.74
Additional authorized amount available to repurchase shares				$ 10,000,000	$ 5,000,000
Total amount available to repurchase of shares	$ 10,100,000
Repurchase of common stock	$ 0	$ 7,034,000	$ 1,838,000

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Amount available to repurchase of shares.

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Average Repurchase Price Common Stock Per Share

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Number of shares of common stock subject to repurchase or cancellation determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period. Common stock subject to repurchase are outstanding common shares that are contingently returnable (that is, subject to recall).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e2646-109256

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