Revenue - Summary of Revenue from Tenant Construction Projects Disaggregated by Tenant Agency (Detail) - ASU 2014-09 [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	$ 422	$ 2,107	$ 1,273	$ 3,286
Food And Drug Administration ("FDA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	59	7	530	62
Department of Veteran Affairs ("VA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	174	1,045	426	1,191
U.S Joint Staff Command ("JSC") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	102	91	170	405
Internal Revenue Service ("IRS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	0	14	31	64
Federal Bureau of Investigation ("FBI") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	73	586	98	793
Department of Treasury ("TREAS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	0	25	2	25
The Judiciary of the U.S. Government ("JUD") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	0	0	1	38
U.S. Citizenship and Immigration Services ("USCIS") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	10	15	11	43
U.S. Coast Guard ("USCG") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	0	83	0	290
Department of Transportation ("DOT") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	4	6	4	57
General Services Administration - Other [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	0	108	0	150
State of California ("CA") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	0	0	0	41
Drug Enforcement Agency (“DEA”) [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	0	33	0	33
Homeland Security Investigations ("HSI") [Member]
Disaggregation Of Revenue [Line Items]
Tenant Construction Project Income	$ 0	$ 94	$ 0	$ 94