INVESTMENTS IN REAL ESTATE - Consolidated Operating Properties Information (Details)	3 Months Ended
	Sep. 30, 2025 Tenant
Commodore Apartments [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property name	Commodore Apartments
Property owner	Madison-PVT Partners LLC
Location	Oakland, CA
Number of tenants	45
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	38
Year built	1929
Ownership interest	100.00%
Hollywood Apartments [Member]
INVESTMENTS IN REAL ESTATE [Abstract]
Property name	Hollywood Apartments
Property owner	PT Hillview GP, LLC
Location	Hollywood, CA
Number of tenants	47
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	78
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	7
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	7
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	8
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	7
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	12
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	14
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	14
Year built	2025
Ownership interest	100.00%