Patents, net (Details Textual) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
| Amortization expense | $ 404,000 | $ 394,000 | $ 285,000 |
| Impairment of patent costs | 648,000 | ||
| Year 2017-2025 [Member] | |||
| Estimated annual amortization expense | 361,000 | ||
| Year 2026 [Member] | |||
| Estimated annual amortization expense | 351,000 | ||
| Year 2027 [Member] | |||
| Estimated annual amortization expense | 349,000 | ||
| Year 2028 [Member] | |||
| Estimated annual amortization expense | 111,000 | ||
| Year 2029 and 2032 [Member] | |||
| Estimated annual amortization expense | 57,000 | ||
| Year 2033 [Member] | |||
| Estimated annual amortization expense | $ 22,000 | ||
| Minimum and Intangible Assets - Patent (Member) | |||
| Estimated remaining useful lives of the assets | 12 years | ||
| Amortization period | 9 years 2 months 5 days | ||
| Maxiimum and Intangible Assets - Patent (Member) | |||
| Estimated remaining useful lives of the assets | 17 years | ||
| Amortization period | 16 years 4 months 24 days | ||