Note 7 - Concentrations (Details Textual) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | ||||
| Number of Major Customers | 3 | 2 | 3 | 3 |
| Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Three Customers [Member] | ||||
| Concentration Risk, Percentage | 94.00% | 89.00% | 67.00% | |
| Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Two Customers [Member] | ||||
| Concentration Risk, Percentage | 78.00% | |||
| Supplier Concentration Risk [Member] | Cost of Goods, Total [Member] | ||||
| Number of Major Suppliers | 3 | 3 | 3 | 3 |
| Supplier Concentration Risk [Member] | Cost of Goods, Total [Member] | Three Suppliers [Member] | ||||
| Concentration Risk, Percentage | 55.00% | 59.00% | 48.00% | 63.00% |
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- Definition Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc. No definition available.
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- Definition Represents the number of major suppliers to the company. 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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