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Interest Bearing Deposits - Composition of Network Deposits (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Interest Bearing Deposits [Line Items]    
Total network deposits $ 334,287 $ 330,047
CDARS    
Interest Bearing Deposits [Line Items]    
Total network deposits 12,388 22,411
ICS    
Interest Bearing Deposits [Line Items]    
Total network deposits $ 321,899 $ 307,636