Net (Loss) / Income Per Share (“EPS”) - Computation of diluted EPS (Details) - shares	3 Months Ended		9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Accounting Policies [Abstract]
Weighted average number of common shares outstanding - Basic	1,068,100	1,056,343	1,068,100	960,054
Potentially dilutive common stock equivalents	1,524,616	1,603,125	1,524,616	1,603,125
Weighted average number of common and equivalent shares outstanding-Diluted	2,592,716	2,659,468	2,592,716	2,563,179