Related Party Transactions (Schedule of Summarizes Assets and Liabilities) (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jan. 31, 2021	Jul. 31, 2019	Jul. 31, 2020
Operating Lease Right-Of-Use Assets	$ 35,826,496		$ 37,077,038
Operating lease liabilities	28,470,232		29,044,966
Expiration Date		Jul. 31, 2030
Jamaica Avenue at 169th Street [Member]
Operating Lease Right-Of-Use Assets	13,884,813		14,230,659
Operating lease liabilities	$ 5,332,291		5,455,029
Expiration Date	May 31, 2030
504-506 Fulton Street [Member]
Operating Lease Right-Of-Use Assets	$ 3,006,118		3,063,268
Operating lease liabilities	$ 3,130,149		$ 3,190,253
Expiration Date	Apr. 30, 2031