LEASES Lease, Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Leases [Abstract]
Operating lease cost	$ 2,658	$ 2,219
Short-term operating lease cost	721	788
Operating cash flows from operating leases	$ 2,303	$ 1,878
Weighted-average remaining lease term - operating leases	9 years 1 month 6 days	9 years 4 months 24 days
Weighted-average discount rate - operating leases	3.88%	3.87%