Cash, Cash Equivalents, and Restricted Cash and Cash Equivalents (Details) - Schedule of cash, cash equivalents, and restricted cash and cash equivalents - USD ($) $ in Thousands	Oct. 31, 2020	Jul. 31, 2020	Oct. 31, 2019	Jul. 31, 2019
Schedule of cash, cash equivalents, and restricted cash and cash equivalents [Abstract]
Cash and cash equivalents	$ 74,082	$ 84,860
Restricted cash and cash equivalents	114,046	116,362
Total cash, cash equivalents, and restricted cash and cash equivalents	$ 188,128	$ 201,222	$ 252,401	$ 257,199