Cash, Cash Equivalents, and Restricted Cash and Cash Equivalents (Details) - Schedule of cash, cash equivalents, and restricted cash and cash equivalents - USD ($) $ in Thousands	Jan. 31, 2021	Jul. 31, 2020	Jan. 31, 2020	Jul. 31, 2019
Schedule of cash, cash equivalents, and restricted cash and cash equivalents [Abstract]
Cash and cash equivalents	$ 79,481	$ 84,860
Restricted cash and cash equivalents	109,858	116,362
Total cash, cash equivalents, and restricted cash and cash equivalents	$ 189,339	$ 201,222	$ 233,094	$ 257,199