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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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- 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 + Details
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- Definition 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 + Details
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