v3.26.3
Regulatory Ratios and Capital - Narrative (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Oct. 21, 2026
$ / shares
Sep. 30, 2026
USD ($)
$ / shares
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 12, 2025
USD ($)
Dec. 31, 2009
USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]                
Common stock, dividends, per share, cash paid (in USD per share) | $ / shares   $ 0.20   $ 0.40        
Shares repurchased   $ 103,009 $ 7,076 $ 201,718 $ 59,234      
Assets   $ 32,345,107   $ 32,345,107   $ 31,540,274   $ 15,000,000
Subsequent Event                
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]                
Common stock, dividends, per share, cash paid (in USD per share) | $ / shares $ 0.20              
December 2025 Share Repurchase Program                
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]                
Authorized repurchase amount             $ 200,000  
Shares repurchased (in shares) | shares       2,061,431        
Shares repurchased       $ 201,700        
Shares repurchased, price per share (in dollars per share) | $ / shares       $ 97.00        
Basel III, Phased-In                
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]                
Tier 1 capital (to average assets) to be well capitalized under prompt corrective action provisions, ratio   0.025   0.025