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CASH AND DUE FROM BANKS
12 Months Ended
Dec. 31, 2023
Cash and Cash Equivalents [Abstract]  
CASH AND DUE FROM BANKS
CASH AND DUE FROM BANKS
HTLF Bank is required to maintain certain average cash reserve balances as a non-member bank of the Federal Reserve System. On March 15, 2020, the Federal Reserve temporarily suspended the reserve requirement due to the COVID-19 pandemic, and as a result, there was no reserve requirement at both December 31, 2023, and December 31, 2022.