The Impact of COVID-19 on our Results and Operations (Narrative) (Details) - USD ($)	3 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	May 31, 2022	Aug. 31, 2021	Jul. 31, 2021
Operating Loss Carryforwards [Line Items]
Cost of asset	$ 77,254,726				$ 76,792,055
Period over which state capital-based tax will be phased out	7 years
Rent deferrals	$ 337,135				364,963
Fishkill, New York building [Member]
Operating Loss Carryforwards [Line Items]
Cost of asset		$ 842,767
Other expenditures	41,538	23,577
Fishkill, New York building [Member] | May 2022 [Member]
Operating Loss Carryforwards [Line Items]
Cost of asset			$ 892,000
Fishkill, New York building [Member] | Resurface parking lot [Member]
Operating Loss Carryforwards [Line Items]
Renovations and improvements expense	241,587
Cost of asset				$ 342,316
Fishkill, New York building [Member] | Canopy [Member]
Operating Loss Carryforwards [Line Items]
Renovations and improvements expense	75,619
Fishkill, New York building [Member] | Elevator modernization [Member]
Operating Loss Carryforwards [Line Items]
Renovations and improvements expense	$ 102,182
Fishkill, New York building [Member] | Second lobby [Member]
Operating Loss Carryforwards [Line Items]
Renovations and improvements expense		351,810
Jowein building in Brooklyn, New York [Member] | Upgradation of stairwell [Member]
Operating Loss Carryforwards [Line Items]
Renovations and improvements expense		101,261
Jowein building in Brooklyn, New York [Member] | Roof Work [Member]
Operating Loss Carryforwards [Line Items]
Renovations and improvements expense		$ 52,260
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards					10,316,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards					12,356,000
City Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards					$ 10,321,000
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Deferred charges amortization period	1 year
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Deferred charges amortization period	21 years