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, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	$ 6,673	$ 5,671	$ 5,058
Department of Veteran Affairs ("VA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	2,373	1,660	1,135
Federal Bureau of Investigation ("FBI") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	1,307	2,384	2,040
U.S Joint Staff Command ("JSC") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	948	520	89
The Judiciary of the U.S. Government ("JUD") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	391	11	12
Food And Drug Administration ("FDA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	346	93	266
Federal Emergency Management Agency ("FEMA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	318	15	422
U.S. Citizenship and Immigration Services ("USCIS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	250	91
U.S. Coast Guard ("USCG") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	182	98
Customs and Border Protection ("CBP") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	157		23
Occupational Safety and Health Administration ("OSHA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	116	1
National Park Service ("NPS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	110	41	116
General Services Administration - Other [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	42	25	25
Drug Enforcement Administration ("DEA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	40	40
Internal Revenue Service ("IRS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	37	207	77
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		8
Immigration and Customs Enforcement ("ICE") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	7	57	144
Health Resources and Services Administration ("HRSA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	4	3
National Weather Service ("NWS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	$ 2
Bureau of the Fiscal Service ("BFS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		59	34
Department of Energy ("DOE") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		95
Department of Transportation ("DOT") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		49	8
Environmental Protection Agency ("EPA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		204	572
Military Entrance Processing Command ("MEPCOM") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income		$ 18	68
Social Security Administration ("SSA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income			$ 19