Subsequent Events (Details 3) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Revenue	$ 196	$ 50	$ 403	$ 137
Income (loss) from operations			(2,452)	(1,556)
Net income (loss)	$ (708)	$ (562)	$ (2,547)	$ (1,556)
Earnings (loss) per common share-Basic and Diluted	$ (0.06)	$ (0.08)	$ (0.26)	$ (0.26)
Pro Forma [Member]
Revenue			$ 4,247	$ 3,995
Income (loss) from operations			(2,236)	(1,367)
Net income (loss)			$ (2,425)	$ (1,676)
Earnings (loss) per common share-Basic and Diluted			$ (0.25)	$ (0.28)