Shareholders' Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	12 Months Ended
	Dec. 21, 2018	Dec. 21, 2018	Feb. 28, 2019	Jul. 31, 2020	Jul. 31, 2019
Subsidiary, Sale of Stock [Line Items]
Stock redemption, amount					$ (25)
Common stock share outstanding				154,810,655	154,810,655
Common stock shares issued				154,810,655	154,810,655
Dividends, preferred stock
Common stock , par value				$ 0.01	$ 0.01
Stock issued during the period, value					$ 600
Loss on extinguishment of debt	$ 1,066				$ (1,066)
Stock Purchase Agreements [Member] | Dr. Phillip Frost and Jane Hsiao [Member]
Subsidiary, Sale of Stock [Line Items]
Share price per share	$ 0.07	$ 0.07
Stock issued during the period		8,571,428
Common stock , par value	0.01	$ 0.01
Stock issued during the period, value		$ 600
Debt Exchange Agreement [Member] | Hsu Gamma Investments LP and Frost Gamma Investments Trust [Member]
Subsidiary, Sale of Stock [Line Items]
Stock issued during the period		2,737,391
Payment for rent		$ 192
Debt Exchange Agreement [Member] | Creditors [Member]
Subsidiary, Sale of Stock [Line Items]
Share price per share	$ 0.07	$ 0.07
Stock issued during the period		50,584,413
Notes payable	$ 2,225	$ 2,225
Accrued interest	$ 1,316	$ 1,316
Fair value of share price	$ 0.09	$ 0.09
Loss on extinguishment of debt		$ 1,066
Preferred Stock Series B [Member]
Subsidiary, Sale of Stock [Line Items]
Preferred stock liquidation preference, per share value				$ 100
Dividends payable amount per share				10
Stock redemption, shares
Stock redemption, amount
Stock issued during the period
Stock issued during the period, value
Preferred Stock Series C [Member]
Subsidiary, Sale of Stock [Line Items]
Preferred stock liquidation preference, per share value				1.00
Dividends payable amount per share				0.10
Preferred stock, redemption price per share				$ 0.10
Convertible preferred stock, shares issued upon conversion				25
Preferred stock conversion premium price per share				$ 4.20
Preferred stock, conversion basis				Each share of Series C Preferred Stock is convertible into 25 shares of the Company's common stock upon payment of a conversion premium of $4.20 per share of common stock.
Stock redemption, shares			62,048		62,048
Stock redemption, amount			$ 25		$ (62)
Share price per share			$ 0.40
Preferred stock, redemption price			$ 15
Accrued expenses			$ 10
Stock issued during the period
Stock issued during the period, value
Preferred Stock Series D [Member]
Subsidiary, Sale of Stock [Line Items]
Preferred stock liquidation preference, per share value				$ 1,500
Convertible preferred stock, shares issued upon conversion				5,000
Preferred stock, conversion basis				Each share of Series D Preferred Stock is convertible into 5,000 shares of the Company's common stock.
Stock redemption, amount
Common stock share outstanding			2,782
Common stock shares issued			13,910,000
Stock issued during the period
Stock issued during the period, value