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Long-Term Debt - Interest rates (Details) - Credit Agreement | 3 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 30, 2016 | Nov. 30, 2015 | Nov. 30, 2016 | Nov. 30, 2015
Minimum |  |  |  |
Revolving Line of Credit |  |  |  |
Interest rate range during each year (as a percent) | 2.02% | 1.44% | 1.93% | 1.43%
Maximum |  |  |  |
Revolving Line of Credit |  |  |  |
Interest rate range during each year (as a percent) | 4.25% | 3.75% | 4.25% | 4.00%

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- Definition The effective interest rate during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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