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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Useful Lives of Principal Classes of Assets The ranges of useful lives of the principal classes of assets are as follows:

 

Bank premises

15 - 39 years

Leasehold improvements

Shorter of estimated economic lives of 15 years or term of the lease.

Computer equipment

3 - 7 years

Furniture, fixtures and equipment

5 - 10 years