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Loans - Schedule of Internal Risk Tier Categories (Details) - Total Loans - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Financing Receivable, Past Due [Line Items]    
Total loans $ 362,089 $ 344,106
Credit card | Credit card loans    
Financing Receivable, Past Due [Line Items]    
Total loans 249,489 243,959
Credit card | Credit card loans | ≥ 800    
Financing Receivable, Past Due [Line Items]    
Total loans 16,835 14,421
Credit card | Credit card loans | 780 – 799    
Financing Receivable, Past Due [Line Items]    
Total loans 11,895 11,327
Credit card | Credit card loans | 760 – 779    
Financing Receivable, Past Due [Line Items]    
Total loans 13,394 12,179
Credit card | Credit card loans | 740 – 759    
Financing Receivable, Past Due [Line Items]    
Total loans 15,373 14,501
Credit card | Credit card loans | 720 – 739    
Financing Receivable, Past Due [Line Items]    
Total loans 19,966 19,343
Credit card | Credit card loans | 700 – 719    
Financing Receivable, Past Due [Line Items]    
Total loans 26,790 26,239
Credit card | Credit card loans | 680 – 699    
Financing Receivable, Past Due [Line Items]    
Total loans 31,887 31,543
Credit card | Credit card loans | 660 – 679    
Financing Receivable, Past Due [Line Items]    
Total loans 31,779 31,958
Credit card | Credit card loans | 640 – 659    
Financing Receivable, Past Due [Line Items]    
Total loans 24,765 25,959
Credit card | Credit card loans | 620 – 639    
Financing Receivable, Past Due [Line Items]    
Total loans 15,036 15,566
Credit card | Credit card loans | 600 – 619    
Financing Receivable, Past Due [Line Items]    
Total loans 9,215 8,968
Credit card | Credit card loans | ≤ 599    
Financing Receivable, Past Due [Line Items]    
Total loans $ 32,554 $ 31,955