Purchase Agreement (Details 2) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Revenue	$ 403	$ 137
Income (loss) from operations	(2,452)	(1,556)
Net income (loss)	$ (2,547)	$ (1,556)
Earnings (loss) per common share-Basic and Diluted	$ (0.26)	$ (0.26)
Pro Forma [Member]
Revenue	$ 541	$ 470
Income (loss) from operations	(2,480)	(1,463)
Net income (loss)	$ (2,575)	$ (1,463)
Earnings (loss) per common share-Basic and Diluted	$ (0.26)	$ (0.24)