Schedule III - Real Estate Assets and Accumulated Depreciation (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Initial Cost to the Company
Land	$ 16,816
Building and Improvements	50,698
In-place lease value intangible	7,477
Total	74,991
Post – acquisition Improvements	2,182
Gross Carrying Amount
Land	16,816
Building and Improvements	52,880
In-place lease value intangible	7,477
Total	77,173	$ 29,674	$ 7,261
Accumulated Depreciation & Amortization	(4,691)
Net Book Carrying Value	72,482
Encumbrances	2,520
Village Pointe
Initial Cost to the Company
Land	1,762
Building and Improvements	4,380
In-place lease value intangible	1,084
Total	7,226
Post – acquisition Improvements	130
Gross Carrying Amount
Land	1,762
Building and Improvements	4,510
In-place lease value intangible	1,084
Total	7,356
Accumulated Depreciation & Amortization	(1,311)
Net Book Carrying Value	6,045
Richardson Tech
Initial Cost to the Company
Land	1,260
Building and Improvements	2,999
In-place lease value intangible	906
Total	5,165
Post – acquisition Improvements	433
Gross Carrying Amount
Land	1,260
Building and Improvements	3,433
In-place lease value intangible	906
Total	5,599
Accumulated Depreciation & Amortization	(866)
Net Book Carrying Value	4,733
Encumbrances	2,520
Spectrum Building
Initial Cost to the Company
Land	2,631
Building and Improvements	12,862
In-place lease value intangible	1,458
Total	16,951
Post – acquisition Improvements	257
Gross Carrying Amount
Land	2,631
Building and Improvements	13,119
In-place lease value intangible	1,458
Total	17,208
Accumulated Depreciation & Amortization	(1,184)
Net Book Carrying Value	16,024
11211 Katy Freeway
Initial Cost to the Company
Land	874
Building and Improvements	2,926
In-place lease value intangible	694
Total	4,494
Post – acquisition Improvements	1,191
Gross Carrying Amount
Land	874
Building and Improvements	4,117
In-place lease value intangible	694
Total	5,685
Accumulated Depreciation & Amortization	(663)
Net Book Carrying Value	5,022
1400 Broadfield
Initial Cost to the Company
Land	2,395
Building and Improvements	6,208
In-place lease value intangible	978
Total	9,581
Post – acquisition Improvements	27
Gross Carrying Amount
Land	2,395
Building and Improvements	6,235
In-place lease value intangible	978
Total	9,608
Accumulated Depreciation & Amortization	(216)
Net Book Carrying Value	9,392
16420 Park Ten
Initial Cost to the Company
Land	1,878
Building and Improvements	5,115
In-place lease value intangible	518
Total	7,511
Post – acquisition Improvements	35
Gross Carrying Amount
Land	1,878
Building and Improvements	5,149
In-place lease value intangible	518
Total	7,545
Accumulated Depreciation & Amortization	(149)
Net Book Carrying Value	7,396
7915 FM 1960
Initial Cost to the Company
Land	993
Building and Improvements	2,808
In-place lease value intangible	171
Total	3,972
Post – acquisition Improvements	95
Gross Carrying Amount
Land	993
Building and Improvements	2,903
In-place lease value intangible	171
Total	4,067
Accumulated Depreciation & Amortization	(91)
Net Book Carrying Value	3,976
Timberway II
Initial Cost to the Company
Land	2,973
Building and Improvements	8,029
In-place lease value intangible	889
Total	11,891
Post – acquisition Improvements	0
Gross Carrying Amount
Land	2,973
Building and Improvements	8,029
In-place lease value intangible	889
Total	11,891
Accumulated Depreciation & Amortization	(89)
Net Book Carrying Value	11,802
One Park Ten
Initial Cost to the Company
Land	769
Building and Improvements	2,197
In-place lease value intangible	109
Total	3,075
Post – acquisition Improvements	0
Gross Carrying Amount
Land	769
Building and Improvements	2,198
In-place lease value intangible	109
Total	3,076
Accumulated Depreciation & Amortization	(76)
Net Book Carrying Value	3,000
Two Park Ten
Initial Cost to the Company
Land	1,281
Building and Improvements	3,174
In-place lease value intangible	670
Total	5,125
Post – acquisition Improvements	14
Gross Carrying Amount
Land	1,281
Building and Improvements	3,187
In-place lease value intangible	670
Total	5,138
Accumulated Depreciation & Amortization	(46)
Net Book Carrying Value	$ 5,092