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Student Loans - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans $ 928,462 $ 920,042  
Allowance for losses 16,046 15,658 $ 10,182
Student loan 912,416 904,384  
Accrued interest receivable, charged against interest income (46,850) (49,321)  
Total 2,862 2,588  
Student loan      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans 33,889 38,493  
Allowance for losses 7,000 6,300  
Student loan 421 426  
Accrued interest receivable, charged against interest income 328 252  
Total $ 2,800 $ 2,600