Revenue - Summary of Revenue from Tenant Construction Projects Disaggregated by Tenant Agency (Detail) - ASU 2014-09 [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	$ 7,192	$ 9,962	$ 6,673
Department of Veteran Affairs ("VA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	3,481	5,702	2,373
Customs and Border Protection ("CBP") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	1,747	293	157
U.S Joint Staff Command ("JSC") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	655	2,132	948
U.S. Citizenship and Immigration Services ("USCIS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	294	56	250
Internal Revenue Service ("IRS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	286	20	37
U.S. Coast Guard ("USCG") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	155	346	182
The Judiciary of the U.S. Government ("JUD") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	153	163	391
Federal Bureau of Investigation ("FBI") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	151	792	1,307
Food And Drug Administration ("FDA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	124	45	346
Department of Transportation ("DOT") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	34	142
Environmental Protection Agency ("EPA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	34
General Services Administration - Other [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	26	39	42
National Weather Service ("NWS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	25		2
Immigration and Customs Enforcement ("ICE") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	20	111	7
Department of Homeland Security ("DHS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	4
State of California ("CA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	$ 3
Federal Emergency Management Agency ("FEMA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		89	318
Bonneville Power Administration ("BPA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		16
National Archives and Records Administration ("NARA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		13
Department of Labor ("DOL") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		$ 3
Occupational Safety and Health Administration ("OSHA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income			116
National Park Service ("NPS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income			110
Drug Enforcement Administration ("DEA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income			40
Federal Aviation Administration ("FAA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income			29
Patent and Trademark Office ("PTO") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income			14
Health Resources and Services Administration ("HRSA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income			$ 4