Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Nov. 30, 2016	May 31, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Income Taxes
Effective income tax rate (as a percent)	3.70%		11.80%	7.00%	14.10%
Tax benefit recorded related to the resolution of an uncertain tax position		$ 1,400
Tax benefit recorded related to the recognition of excess tax benefits from share-based compensation	$ 290			$ 1,640
Tax benefit recorded related to the finalization of certain tax returns	$ 1,180

Amount of decrease in unrecognized tax benefits resulting from finalization of prior period tax returns.

No definition available.

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- Definition

Amount of decrease in unrecognized tax benefits resulting from recognition of excess tax benefits from share-based compensation in income tax expense.

+ References

No definition available.

+ Details

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319

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- References

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- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

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