v3.26.3
Concentrations Risk - Additional Information (Detail)
9 Months Ended
Sep. 30, 2026
Property
Wholly Owned Properties [Member]  
Concentration Risk [Line Items]  
Number of properties 106
CALIFORNIA  
Concentration Risk [Line Items]  
Number of properties 17
Lease Income [Member] | Credit Concentration Risk [Member] | CALIFORNIA  
Concentration Risk [Line Items]  
Percentage of concentrations risk 16.60%
Rentable Square Feet [Member] | Credit Concentration Risk [Member] | CALIFORNIA  
Concentration Risk [Line Items]  
Percentage of concentrations risk 12.80%
U.S. Government [Member] | Lease Income [Member] | Credit Concentration Risk [Member]  
Concentration Risk [Line Items]  
Percentage of concentrations risk 86.50%
Non Governmental Tenants [Member] | Lease Income [Member] | Credit Concentration Risk [Member]  
Concentration Risk [Line Items]  
Percentage of concentrations risk 5.10%
State and Local Government Tenants [Member] | Lease Income [Member] | Credit Concentration Risk [Member]  
Concentration Risk [Line Items]  
Percentage of concentrations risk 8.40%