Leases - Schedule of Maturities of Company's Operating and Finance Leases (Details) $ in Thousands	Apr. 30, 2020 USD ($)
Leases [Abstract]
For the remainder of the fiscal year ending July 31, 2020	$ 2,630
For fiscal year ending July 31, 2021	8,507
For fiscal year ending July 31, 2022	6,922
For fiscal year ending July 31, 2023	4,929
For fiscal year ending July 31, 2024	3,997
For the fiscal year ending July 31, 2025 and thereafter	20,803
Total future lease payments	47,788
Less: amount representing interest	(15,625)
Operating lease liability	32,163
For the remainder of the fiscal year ending July 31, 2020	246
For fiscal year ending July 31, 2021	991
For fiscal year ending July 31, 2022	1,013
For fiscal year ending July 31, 2023	1,036
For fiscal year ending July 31, 2024	1,059
For the fiscal year ending July 31, 2025 and thereafter	3,144
Total future lease payments	7,489
Less: amount representing interest	(2,123)
Finance lease liabilities	$ 5,366