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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2022
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:
March 31, 2022December 31, 2021
 (in thousands)
Commitments to extend credit$8,617,613 $8,731,168 
Standby letters of credit288,676 298,275 
Commercial letters of credit53,496 54,196