v3.26.1
Acquisition of First Foundation Inc. - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 01, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Business Combination [Line Items]                  
Goodwill   $ 102,536 $ 93,483 $ 102,536 $ 93,483 $ 93,483 $ 93,483 $ 93,483 $ 93,483
Merger related expenses   57,559 285 60,240 285        
First Foundation                  
Business Combination [Line Items]                  
Exchange ratio (in shares) 0.16083                
Business acquisition, equity interest issued           $ 682,800      
Payments to acquire businesses $ 17,500                
Purchase price 703,568                
Goodwill 9,053                
Total revenues   270,964 260,515 512,641 517,331        
Merger related expenses   57,600 300 60,200 300        
Merger related expenses, net of tax   $ 43,900 $ 200 $ 46,000 $ 200        
First Foundation | Federal Home Loan Bank, Advances, Putable Option                  
Business Combination [Line Items]                  
Federal Home Loan Bank advances 1,000,000                
First Foundation | Federal Home Loan Bank, Advances, Term Option                  
Business Combination [Line Items]                  
Federal Home Loan Bank advances 400,000                
First Foundation | Restricted Stock Award                  
Business Combination [Line Items]                  
Estimated pre-combination vesting value $ 3,300                
First Foundation | Voting Common Stock                  
Business Combination [Line Items]                  
Business acquisition, number of shares issued (in shares) 16,100,000                
First Foundation | Non-voting Common Stock                  
Business Combination [Line Items]                  
Business acquisition, number of shares issued (in shares) 2,600,000