SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	$ 97,100
Initial Cost
Land	141,236
Building and Improvements	450,876
Net Improvements (Write-Offs) Since Acquisition	50,590
Gross Amount at Which Carried
Land	141,236
Building and Improvements	501,466
Investments in real estate	642,702	$ 637,205
Accumulated Depreciation	144,718	131,165	$ 120,555
Other disclosures
Federal tax cost basis (unaudited)	695,100
Line of Credit | Revolving Credit Facility
Other disclosures
Outstanding balance	60,000	$ 166,500
Office Building | 3601 S Congress Avenue Austin, TX
Initial Cost
Land	9,569
Building and Improvements	18,593
Net Improvements (Write-Offs) Since Acquisition	12,532
Gross Amount at Which Carried
Land	9,569
Building and Improvements	31,125
Investments in real estate	40,694
Accumulated Depreciation	8,857
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	19,048
Gross Amount at Which Carried
Land	9,261
Building and Improvements	132,667
Investments in real estate	141,928
Accumulated Depreciation	52,113
Office Building | 2 Kaiser Plaza Parking Lot Oakland, CA
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	0
Initial Cost
Land	10,931
Building and Improvements	110
Net Improvements (Write-Offs) Since Acquisition	3,153
Gross Amount at Which Carried
Land	10,931
Building and Improvements	3,263
Investments in real estate	14,194
Accumulated Depreciation	42
Office Building | 11600 Wilshire Blvd Los Angeles, CA
Initial Cost
Land	3,477
Building and Improvements	18,522
Net Improvements (Write-Offs) Since Acquisition	2,090
Gross Amount at Which Carried
Land	3,477
Building and Improvements	20,612
Investments in real estate	24,089
Accumulated Depreciation	6,584
Office Building | 11620 Wilshire Blvd Los Angeles, CA
Initial Cost
Land	7,672
Building and Improvements	51,999
Net Improvements (Write-Offs) Since Acquisition	6,457
Gross Amount at Which Carried
Land	7,672
Building and Improvements	58,456
Investments in real estate	66,128
Accumulated Depreciation	17,940
Office Building | 4750 Wilshire Blvd Los Angeles, CA
Initial Cost
Land	16,633
Building and Improvements	28,985
Net Improvements (Write-Offs) Since Acquisition	5,375
Gross Amount at Which Carried
Land	16,633
Building and Improvements	34,360
Investments in real estate	50,993
Accumulated Depreciation	6,367
Office Building | Lindblade Media Center Los Angeles, CA
Initial Cost
Land	6,342
Building and Improvements	11,568
Net Improvements (Write-Offs) Since Acquisition	(101)
Gross Amount at Which Carried
Land	6,342
Building and Improvements	11,467
Investments in real estate	17,809
Accumulated Depreciation	2,198
Office Building | 1037 N Sycamore Los Angeles, CA
Initial Cost
Land	1,839
Building and Improvements	1,094
Net Improvements (Write-Offs) Since Acquisition	48
Gross Amount at Which Carried
Land	1,839
Building and Improvements	1,142
Investments in real estate	2,981
Accumulated Depreciation	14
Office Building | 1130 Howard Street San Francisco, CA
Initial Cost
Land	8,290
Building and Improvements	10,480
Net Improvements (Write-Offs) Since Acquisition	131
Gross Amount at Which Carried
Land	8,290
Building and Improvements	10,611
Investments in real estate	18,901
Accumulated Depreciation	1,297
Office Building | 9460 Wilshire Boulevard Los Angeles, CA
Initial Cost
Land	52,199
Building and Improvements	76,730
Net Improvements (Write-Offs) Since Acquisition	1,681
Gross Amount at Which Carried
Land	52,199
Building and Improvements	78,411
Investments in real estate	130,610
Accumulated Depreciation	8,738
Office Building | 1021 East 7th Street, Austin, TX
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	0
Initial Cost
Land	4,976
Building and Improvements	733
Net Improvements (Write-Offs) Since Acquisition	0
Gross Amount at Which Carried
Land	4,976
Building and Improvements	733
Investments in real estate	5,709
Accumulated Depreciation	113
Hotel | Sheraton Grand Hotel Sacramento, CA
Initial Cost
Land	3,497
Building and Improvements	107,447
Net Improvements (Write-Offs) Since Acquisition	(99)
Gross Amount at Which Carried
Land	3,497
Building and Improvements	107,348
Investments in real estate	110,845
Accumulated Depreciation	36,612
Hotel | Sheraton Grand Hotel Parking & Retail Sacramento, CA
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
Encumbrances	0
Initial Cost
Land	6,550
Building and Improvements	10,996
Net Improvements (Write-Offs) Since Acquisition	275
Gross Amount at Which Carried
Land	6,550
Building and Improvements	11,271
Investments in real estate	17,821
Accumulated Depreciation	$ 3,843