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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Summary of Changes in ACL on Off-balance Sheet Credit Exposures

Changes in the ACL on off-balance sheet credit exposures were as follows for the periods presented ($ in thousands):

 

 

 

Years Ended December 31,

 

 

 

2023

 

 

2022

 

 

2021

 

Balance at beginning of period

 

$

36,838

 

 

$

35,623

 

 

$

38,572

 

PCL, off-balance sheet credit exposures

 

 

(2,781

)

 

 

1,215

 

 

 

(2,949

)

Balance at end of period

 

$

34,057

 

 

$

36,838

 

 

$

35,623