Stockholders' Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands				6 Months Ended		12 Months Ended
	Dec. 16, 2016	Apr. 13, 2016	Jan. 06, 2016	Apr. 30, 2017	Apr. 30, 2016	Oct. 31, 2016	Apr. 19, 2016	Jan. 14, 2016
Common stock, par value				$ 0.001		$ .001
Warrant exercise price per share							$ 6.90
Number of common stock value issued				$ 2,278
Reverse stock split, description				one (1) for six (6) basis, effective on July 29, 2016
Employees [Member]
Number of common stock option exercise price per share			$ 4.08
Number of common stock shares issued			31,656
Accredited Investors [Member]
Sale of common stock issued, shares	759,333
Sale of stock price, per share	$ 3.00
Warrants to purchase shares of common stock				187,500		187,500
Number of common stock shares issued				56,250		250,000
Proceeds from sale of common stock	$ 2,300
Reverse stock split, description						1 for 6 basis
Number of warrant offering, shares						0.3
Warrant [Member]
Beneficially not ownership percentage				4.99%
Proceeds from offering to a warrant liability				$ 318
Warrant exercisable term				2 years
Warrant exercise price per share				$ 6.90
Common Stock [Member]
Number of convertible into an aggregate shares issued				613,423
Cash dividend								$ 6,000
Number of common stock shares issued				759,333
Number of common stock value issued				$ 1
Securities Purchase Agreement [Member]
Sale of common stock issued, shares		250,000
Common stock, par value		$ 0.001
Common stock offering price per share		$ 6.00
Proceeds from offering to a warrant liability		$ 1,400
Warrants to purchase shares of common stock				187,500
Series A Preferred Shares [Member]
Preferred stock, stated value per share				$ 0.68
Preferred stock initial conversion price, per share				4.08
Preferred stock current conversion price per share				$ 3.00
Series A Preferred Shares [Member] | Minimum [Member]
Beneficially ownership percentage				4.99%
Beneficially not ownership percentage				9.99%
Investors monthly payment percentage				1.00%
Series A Preferred Shares [Member] | Maximum [Member]
Preferred stock conversion price, per share				$ 3.54
Investors monthly payment percentage				12.00%
Series A Convertible Preferred Stock [Member]
Preferred stock conversion price, percentage				0.00%
Number of convertible into an aggregate shares issued				3,336,700	599,634
Series B Preferred Shares [Member]
Preferred stock, stated value per share				$ 140.00
Preferred stock initial conversion price, per share				8.40
Preferred stock conversion price, per share				$ 8.40
Series B Preferred Shares [Member] | Minimum [Member]
Beneficially ownership percentage				4.99%
Series B Preferred Shares [Member] | Maximum [Member]
Beneficially ownership percentage				9.99%
Series C Preferred Shares [Member]
Preferred stock, stated value per share				$ 120.00
Preferred stock initial conversion price, per share				7.20
Preferred stock current conversion price per share				5.16
Preferred stock conversion price, per share				$ 7.80
Series C Preferred Shares [Member] | Minimum [Member]
Beneficially ownership percentage				4.99%
Investors monthly payment percentage				1.00%
Series C Preferred Shares [Member] | Maximum [Member]
Beneficially ownership percentage				9.99%
Investors monthly payment percentage				12.00%
Preferred stock reduction conversion price, per share				$ 5.16
Series D Preferred Shares [Member]
Preferred stock, stated value per share				1,000
Preferred stock initial conversion price, per share				$ 600
Preferred stock conversion price, percentage				0.00%
Series D Preferred Shares [Member] | Minimum [Member]
Beneficially ownership percentage				4.99%
Series D Preferred Shares [Member] | Maximum [Member]
Beneficially ownership percentage				9.99%
Series E Preferred Shares [Member]
Preferred stock, stated value per share				$ 1,000
Preferred stock initial conversion price, per share				$ 1.00
Series B Convertible Preferred Stock [Member]
Number of convertible into an aggregate shares issued				6,092
Series C Convertible Preferred Stock [Member]
Number of convertible into an aggregate shares issued				5,648
Series D Convertible Preferred Stock [Member]
Number of convertible into an aggregate shares issued				96,332	12,001
Common Stock [Member]
Number of convertible into an aggregate shares issued				971,860	119,941
Cash dividend								$ 10,000
Number of common stock option exercise price per share				$ 4.83
Number of common stock shares issued				121,698
Number of common stock value issued				$ 588,000