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Leases - Narrative (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
USD ($)
property
Dec. 31, 2022
USD ($)
Operating Leases [Line Items]    
Straight-line rent receivable $ 6,400  
Number of properties subject to ground leases | property 3  
Right-of-use assets $ 28,612 $ 28,670
Lease liabilities $ 28,612 $ 28,670
Weighted average discount rate (as a percent) 4.50%  
Weighted average remaining lease term (in years) 47 years 2 months 12 days  
Signature Bridge Bank    
Operating Leases [Line Items]    
Period to assume or reject lease 120 days  
Minimum    
Operating Leases [Line Items]    
Term of lease (in years) 1 year  
Maximum    
Operating Leases [Line Items]    
Term of lease (in years) 22 years