Concentrations Risk - Additional Information (Detail) - Property |
12 Months Ended | |
---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
|
Wholly Owned Properties [Member] | ||
Concentration Risk [Line Items] | ||
Number of properties | 86 | 89 |
CALIFORNIA | ||
Concentration Risk [Line Items] | ||
Number of properties | 17 | 17 |
Rentable Square Feet [Member] | Credit Concentration Risk [Member] | CALIFORNIA | ||
Concentration Risk [Line Items] | ||
Percentage of concentrations risk | 14.80% | 15.50% |
U.S. Government [Member] | Lease Income [Member] | Credit Concentration Risk [Member] | ||
Concentration Risk [Line Items] | ||
Percentage of concentrations risk | 96.40% | 96.00% |
Non Governmental Tenants [Member] | Lease Income [Member] | Credit Concentration Risk [Member] | ||
Concentration Risk [Line Items] | ||
Percentage of concentrations risk | 3.60% | 4.00% |