Balance Sheet Details (Details Narrative) - USD ($) |
12 Months Ended | |
|---|---|---|
Jul. 31, 2017 |
Jul. 31, 2016 |
|
| Inventory wrote off | $ 50,000 | |
| Sale of inventory | 34,000 | 46,000 |
| Inventory finished goods net of reserves | 34,000 | 46,000 |
| Depreciation expense | 98,000 | 40,000 |
| Impairment expense | 48,000 | |
| Patents [Member] | ||
| Amortization expense | $ 178,000 | $ 179,000 |
| Weighted average remaining amortization period for patents | 5 years | |
| Amortization expense, next twelve months | $ 178,000 | |
| Amortization expenses, year two | 178,000 | |
| Amortization expenses, year three | 178,000 | |
| Amortization expenses, year four | 178,000 | |
| Amortization expenses, year five | $ 178,000 | |