INVESTMENTS IN REAL ESTATE - Consolidated Operating Properties Information (Details)	12 Months Ended
	Jun. 30, 2026 Tenant
Commodore Apartment [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Commodore Apartments
Property Owner	Madison-PVT Partners LLC
Location	Oakland, CA
Number of Tenants	43
Year Built	1912
Ownership Interest	100.00%
The Park View Apartments [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	The Park View Apartments
Property Owner	PVT-Madison Partners LLC
Location	Oakland, CA
Number of Tenants	35
Year Built	1929
Ownership Interest	100.00%
Hollywood Apartment [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Hollywood Apartments
Property Owner	PT Hillview GP, LLC
Location	Los Angeles, CA
Number of Tenants	48
Year Built	1917
Ownership Interest	100.00%
Shoreline Apartments [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Shoreline Apartments
Property Owner	MacKenzie-BAA IG Shoreline LLC
Location	Concord, CA
Number of Tenants	75
Year Built	1968
Ownership Interest	100.00%
Satellite Place Office Building [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Satellite Place Office Building
Property Owner	MacKenzie Satellite Place Corp.
Location	Duluth, GA
Number of Tenants	5
Year Built	2002
Ownership Interest	100.00%
First & Main Office Building [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	First & Main Office Building
Property Owner	First & Main, LP
Location	Napa, CA
Number of Tenants	6
Year Built	2001
Ownership Interest	100.00%
1300 Main Office Building [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	1300 Main Office Building
Property Owner	1300 Main, LP
Location	Napa, CA
Number of Tenants	8
Year Built	2020
Ownership Interest	100.00%
Woodland Corporate Center [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Woodland Corporate Center
Property Owner	Woodland Corporate Center Two, LP
Location	Woodland, CA
Number of Tenants	13
Year Built	2004
Ownership Interest	100.00%
Main Street West Office Building [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Main Street West Office Building
Property Owner	Main Street West, LP
Location	Napa, CA
Number of Tenants	9
Year Built	2007
Ownership Interest	100.00%
220 Campus Lane Office Building [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	220 Campus Lane Office Building
Property Owner	220 Campus Lane, LLC
Location	Fairfield, CA
Number of Tenants	4
Year Built	1990
Ownership Interest	100.00%
Green Valley Executive Center [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Green Valley Executive Center
Property Owner	GV Executive Center, LLC
Location	Fairfield, CA
Number of Tenants	15
Year Built	2006
Ownership Interest	100.00%
One Harbor Center [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	One Harbor Center
Property Owner	One Harbor Center, LP
Location	Suisun, CA
Number of Tenants	11
Year Built	2001
Ownership Interest	100.00%
Green Valley Medical Center [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Green Valley Medical Center
Property Owner	Green Valley Medical Center, LP
Location	Fairfield, CA
Number of Tenants	12
Year Built	2002
Ownership Interest	100.00%
Aurora at Green Valley [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property Name	Aurora at Green Valley
Property Owner	MRC Aurora, LLC
Location	Fairfield, CA
Number of Tenants	67
Year Built	2025