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Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]  
Summary of Outstanding Commitments to Extend Credit and Letters of Credit
The following table presents the Corporation's commitments to extend credit and letters of credit:
September 30,
2023
December 31, 2022
 (dollars in thousands)
Commitments to extend credit$8,857,675 $8,695,621 
Standby letters of credit269,935 260,829 
Commercial letters of credit51,864 49,288