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Regulatory Capital Requirements - Capital Conservation Buffer (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
Sep. 30, 2025
USD ($)
shares
Jan. 31, 2025
USD ($)
Dec. 31, 2024
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]        
Effective CET1 capital to risk-weighted assets (as a percent) 0.1324 0.1324   0.128
Effective Tier 1 capital to risk-weighted assets (as a percent) 0.1324 0.1324   0.128
Effective total capital to risk-weighted assets (as a percent) 0.1449 0.1449   0.1399
Stock repurchase program     $ 100,000  
Common stock repurchased (in shares) | shares   2,980,480    
Common stock repurchased $ 24,041 $ 74,041    
Banking Regulation, Standardized Approach        
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]        
Capital requirements above regulatory rate (as a percent) 0.025 0.025    
Effective CET1 capital to risk-weighted assets (as a percent) 0.07 0.07    
Effective Tier 1 capital to risk-weighted assets (as a percent) 0.085 0.085    
Effective total capital to risk-weighted assets (as a percent) 0.105 0.105