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Comprehensive Text Block List (Tables)
12 Months Ended
Dec. 31, 2021
Text Block [Abstract]  
Accounting Standards Update and Change in Accounting Principle
The following table illustrates the impact of ASC 326:

January 1, 2021
(In thousands)As Reported Under ASC 326Pre-ASC 326 AdoptionImpact of ASC 326 Adoption
Assets:
Loans$7,177,666 $7,177,785 $(119)
ACL on loans
Commercial, financial and agricultural 17,351 25,608 (8,257)
Commercial real estate 25,599 23,480 2,119 
Construction real estate5,390 7,288 (1,898)
Residential real estate14,484 11,363 3,121 
Consumer28,343 17,418 10,925 
Leases598 518 80 
Total ACL on loans$91,765 $85,675 $6,090 
Liabilities:
ACL on off-balance sheet commitments$3,982 $116 $3,866 
Net deferred tax liability777 2,892 (2,115)
Shareholders' equity:$1,032,300 $1,040,256 $(7,956)