Note 9 - Concentrations (Details Textual)
$ in Thousands |
12 Months Ended |
|
Jun. 30, 2016
USD ($)
|
Jun. 30, 2015
USD ($)
|
| Distributor 1 [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member] |
|
|
| Concentration Risk, Percentage |
28.00%
|
28.00%
|
| Distributor 1 [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member] |
|
|
| Concentration Risk, Percentage |
23.00%
|
15.00%
|
| Distributor 1 [Member] |
|
|
| Accounts Receivable, Net, Current |
$ 901
|
$ 1,423
|
| Revenue, Net |
$ 2,797
|
$ 2,358
|
| Customer 1 [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member] |
|
|
| Concentration Risk, Percentage |
19.00%
|
12.00%
|
| Customer 1 [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member] |
|
|
| Concentration Risk, Percentage |
21.00%
|
16.00%
|
| Customer 1 [Member] |
|
|
| Accounts Receivable, Net, Current |
$ 620
|
$ 615
|
| Revenue, Net |
$ 2,475
|
$ 2,549
|
| Distributor 2 [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member] |
|
|
| Concentration Risk, Percentage |
10.00%
|
10.00%
|
| Distributor 2 [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member] |
|
|
| Concentration Risk, Percentage |
|
14.00%
|
| Distributor 2 [Member] |
|
|
| Accounts Receivable, Net, Current |
$ 320
|
$ 520
|
| Revenue, Net |
|
$ 2,303
|
| Distributor 3 [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member] |
|
|
| Concentration Risk, Percentage |
|
14.00%
|
| Distributor 3 [Member] |
|
|
| Accounts Receivable, Net, Current |
|
$ 697
|
| Supplier Concentration Risk [Member] | Cost of Goods, Total [Member] | Supplier 1 [Member] |
|
|
| Concentration Risk, Percentage |
65.00%
|
45.00%
|
| Supplier Concentration Risk [Member] | Cost of Goods, Total [Member] | Supplier 2 [Member] |
|
|
| Concentration Risk, Percentage |
21.00%
|
17.00%
|
| Supplier Concentration Risk [Member] | Cost of Goods, Total [Member] | Supplier 3 [Member] |
|
|
| Concentration Risk, Percentage |
|
13.00%
|
| Accounts Receivable, Net, Current |
$ 3,169
|
$ 5,133
|
| Revenue, Net |
$ 11,929
|
$ 16,042
|
| Number of Suppliers |
2
|
3
|