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Issuances of warrants to purchase.

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Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Number of share options (or share units) exercised during the current period.

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Value of stock issued as a result of the exercise of stock options.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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Equity (Details) - USD ($)		6 Months Ended
Equity (Details) - USD ($)	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