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Commitments (Tables)
9 Months Ended
Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Commitments
The contractual amounts of off-balance-sheet financial instruments are as follows:
(in thousands)September 30, 2021December 31, 2020
Commitments to extend credit$2,422,097 $1,946,068 
Letters of credit67,071 50,971