Equity (Details) - USD ($)
|
|
6 Months Ended |
|
Feb. 06, 2017 |
Jan. 31, 2017 |
Jul. 31, 2016 |
| Equity (Textual) |
|
|
|
| Treasury stock, shares |
|
40,000
|
40,000
|
| Treasury stock, value |
|
$ 428,000
|
$ 428,000
|
| Common stock issued for exercises of stock options |
|
$ 8,000
|
|
| Class B Common Stock [Member] | Subsequent Event [Member] |
|
|
|
| Equity (Textual) |
|
|
|
| Issuances of warrants to purchase |
252,161
|
|
|
| Class B Common Stock [Member] | Stock options [Member] |
|
|
|
| Equity (Textual) |
|
|
|
| Common stock issued for exercises of stock options, Shares |
|
1,440
|
|
| Common stock issued for exercises of stock options |
|
$ 8,000
|
|
| Class B Common Stock [Member] | Officers [Member] |
|
|
|
| Equity (Textual) |
|
|
|
| Stock issued during period as compensation |
|
108,000
|
|
| Class B Common Stock [Member] | Other Employees [Member] |
|
|
|
| Equity (Textual) |
|
|
|
| Stock issued during period as compensation |
|
56,000
|
|
| Class B Common Stock [Member] | Davidi Jonas [Member] |
|
|
|
| Equity (Textual) |
|
|
|
| Stock issued during period as compensation |
|
120,000
|
|
| Class B Common Stock [Member] | Consultant [Member] |
|
|
|
| Equity (Textual) |
|
|
|
| Stock issued during period as compensation |
|
1,250
|
|
| Class B Common Stock [Member] | Director [Member] |
|
|
|
| Equity (Textual) |
|
|
|
| Stock issued during period as compensation |
|
24,000
|
|