Significant Customers and Concentration of Credit Risk (Details Textual) - Customer concentration risk [Member] |
12 Months Ended | ||
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Feb. 28, 2018 |
Feb. 28, 2017 |
Feb. 29, 2016 |
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| Concentration Risk [Line Items] | |||
| Concentration risk, Additional Characteristic | 10% or more of our net sales | 10% or more of our net sales | 10% or more of our net sales |
| Net sales [Member] | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, Additional Characteristic | five largest customers | five largest customers | five largest customers |
| Concentration risk, Percentage | 32.50% | 32.60% | 31.70% |
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- Definition For an entity that discloses a concentration risk as a percentage of some financial balance or benchmark, this item identifies a second characteristic of the concentration. For example, "Europe" is the second characteristic in the phrase: "net assets in Europe are 70% of total net assets". Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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