Patents (Tables)

12 Months Ended

Jul. 31, 2018

Accounting Policies [Abstract]

Costs and accumulated amortization of patents

Patents, net as of August 1, 2017	$—
Net patents acquired during acquisition of HDS		27,221
Less: Amortization expense		(1,370	)
Patents, net as of July 31, 2017	$	25,851
Weighted average life		9 years
Less: Amortization expense		(2,571	)
Patents, net as of July 31, 2018	$	23,280