SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	$ 335,446
Initial Cost
Land	175,715
Building and Improvements	641,436
Net Improvements (Write-Offs) Since Acquisition	77,667
Gross Amount at Which Carried
Land	175,682
Building and Improvements	719,103
Investments in real estate	894,785	$ 868,878
Accumulated Depreciation	185,591	164,116	$ 158,407
Other disclosures
Outstanding balance	511,734
Federal tax cost basis (unaudited)	1,000,000
Line of Credit
Other disclosures
Outstanding balance	15,000
Mortgages Payable
Other disclosures
Outstanding balance	440,446	250,700
Mortgages Payable | Fixed rate mortgages payable
Other disclosures
Outstanding balance	269,100	163,700
Mortgages Payable | Variable rate mortgages payable
Other disclosures
Outstanding balance	171,346	$ 87,000
Office Building | Mortgages Payable | Fixed rate mortgages payable
Other disclosures
Outstanding balance	105,000
Office Building | 3601 S Congress Avenue Austin, TX
Initial Cost
Land	9,569
Building and Improvements	18,593
Net Improvements (Write-Offs) Since Acquisition	15,583
Gross Amount at Which Carried
Land	9,569
Building and Improvements	34,176
Investments in real estate	43,745
Accumulated Depreciation	11,551
Office Building | 1 Kaiser Plaza Oakland, CA
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	97,100
Initial Cost
Land	9,261
Building and Improvements	113,619
Net Improvements (Write-Offs) Since Acquisition	13,802
Gross Amount at Which Carried
Land	9,261
Building and Improvements	127,421
Investments in real estate	136,682
Accumulated Depreciation	58,081
Office Building | 2 Kaiser Plaza Parking Lot Oakland, CA
Initial Cost
Land	10,931
Building and Improvements	110
Net Improvements (Write-Offs) Since Acquisition	3,585
Gross Amount at Which Carried
Land	10,931
Building and Improvements	3,695
Investments in real estate	14,626
Accumulated Depreciation	0
Office Building | 11600 Wilshire Blvd Los Angeles, CA
Initial Cost
Land	3,477
Building and Improvements	18,522
Net Improvements (Write-Offs) Since Acquisition	2,641
Gross Amount at Which Carried
Land	3,477
Building and Improvements	21,163
Investments in real estate	24,640
Accumulated Depreciation	8,409
Office Building | 11620 Wilshire Blvd Los Angeles, CA
Initial Cost
Land	7,672
Building and Improvements	51,999
Net Improvements (Write-Offs) Since Acquisition	8,917
Gross Amount at Which Carried
Land	7,671
Building and Improvements	60,916
Investments in real estate	68,587
Accumulated Depreciation	24,271
Office Building | 4750 Wilshire Blvd Los Angeles, CA
Initial Cost
Land	4,000
Building and Improvements	0
Net Improvements (Write-Offs) Since Acquisition	283
Gross Amount at Which Carried
Land	4,000
Building and Improvements	283
Investments in real estate	4,283
Accumulated Depreciation	0
Office Building | Lindblade Media Center Los Angeles, CA
Initial Cost
Land	6,341
Building and Improvements	11,568
Net Improvements (Write-Offs) Since Acquisition	775
Gross Amount at Which Carried
Land	6,341
Building and Improvements	12,343
Investments in real estate	18,684
Accumulated Depreciation	3,620
Office Building | 1037 N Sycamore Los Angeles, CA
Initial Cost
Land	1,839
Building and Improvements	1,094
Net Improvements (Write-Offs) Since Acquisition	136
Gross Amount at Which Carried
Land	1,839
Building and Improvements	1,230
Investments in real estate	3,069
Accumulated Depreciation	119
Office Building | 1130 Howard Street San Francisco, CA
Initial Cost
Land	8,290
Building and Improvements	10,480
Net Improvements (Write-Offs) Since Acquisition	(47)
Gross Amount at Which Carried
Land	8,290
Building and Improvements	10,433
Investments in real estate	18,723
Accumulated Depreciation	1,995
Office Building | 9460 Wilshire Boulevard Los Angeles, CA
Initial Cost
Land	52,199
Building and Improvements	76,730
Net Improvements (Write-Offs) Since Acquisition	6,986
Gross Amount at Which Carried
Land	52,199
Building and Improvements	83,716
Investments in real estate	135,915
Accumulated Depreciation	14,993
Office Building | 1021 East 7th Street, Austin, TX
Initial Cost
Land	4,979
Building and Improvements	733
Net Improvements (Write-Offs) Since Acquisition	(189)
Gross Amount at Which Carried
Land	4,979
Building and Improvements	544
Investments in real estate	5,523
Accumulated Depreciation	148
Office Building | 3101 S Western Avenue Los Angeles, CA
Initial Cost
Land	2,279
Building and Improvements	0
Net Improvements (Write-Offs) Since Acquisition	1,368
Gross Amount at Which Carried
Land	2,279
Building and Improvements	1,368
Investments in real estate	3,647
Accumulated Depreciation	1
Office Building | 3022 S Western Avenue Los Angeles, CA
Initial Cost
Land	5,638
Building and Improvements	156
Net Improvements (Write-Offs) Since Acquisition	1,594
Gross Amount at Which Carried
Land	5,638
Building and Improvements	1,750
Investments in real estate	7,388
Accumulated Depreciation	20
Office Building | 1007 E 7th Street Austin, TX
Initial Cost
Land	1,866
Building and Improvements	6
Net Improvements (Write-Offs) Since Acquisition	249
Gross Amount at Which Carried
Land	1,866
Building and Improvements	255
Investments in real estate	2,121
Accumulated Depreciation	1
Office Building | 3109 S Western Avenue Los Angeles, CA
Initial Cost
Land	712
Building and Improvements	2
Net Improvements (Write-Offs) Since Acquisition	207
Gross Amount at Which Carried
Land	712
Building and Improvements	209
Investments in real estate	921
Accumulated Depreciation	0
Office Building | Channel House Oakland, CA
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	87,000
Initial Cost
Land	17,214
Building and Improvements	103,553
Net Improvements (Write-Offs) Since Acquisition	175
Gross Amount at Which Carried
Land	17,208
Building and Improvements	103,728
Investments in real estate	120,936
Accumulated Depreciation	6,141
Office Building | 1150 Clay Oakland, CA
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	67,000
Initial Cost
Land	16,643
Building and Improvements	115,828
Net Improvements (Write-Offs) Since Acquisition	270
Gross Amount at Which Carried
Land	16,623
Building and Improvements	116,098
Investments in real estate	132,721
Accumulated Depreciation	6,870
Office Building | F3 Land Site, Oakland, CA
Initial Cost
Land	251
Building and Improvements	0
Net Improvements (Write-Offs) Since Acquisition	41
Gross Amount at Which Carried
Land	250
Building and Improvements	41
Investments in real estate	291
Accumulated Depreciation	0
Office Building | 466 Water Street Land Site, Oakland, CA
Initial Cost
Land	2,505
Building and Improvements	0
Net Improvements (Write-Offs) Since Acquisition	151
Gross Amount at Which Carried
Land	2,500
Building and Improvements	151
Investments in real estate	2,651
Accumulated Depreciation	0
Hotel | Sheraton Grand Hotel Sacramento, CA
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	84,346
Initial Cost
Land	3,498
Building and Improvements	107,447
Net Improvements (Write-Offs) Since Acquisition	20,854
Gross Amount at Which Carried
Land	3,498
Building and Improvements	128,301
Investments in real estate	131,799
Accumulated Depreciation	45,380
Hotel | Sheraton Grand Hotel Parking & Retail Sacramento, CA
Initial Cost
Land	6,551
Building and Improvements	10,996
Net Improvements (Write-Offs) Since Acquisition	286
Gross Amount at Which Carried
Land	6,551
Building and Improvements	11,282
Investments in real estate	17,833
Accumulated Depreciation	3,991
Hotel | Sheraton Grand Hotel Parking & Retail Sacramento, CA | Mortgages Payable | Variable rate mortgages payable
Other disclosures
Outstanding balance	$ 84,300