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Employee Benefits (Schedule of employee stock ownership plan) (Details) - shares
Dec. 31, 2021
Dec. 31, 2020
Employee Benefits    
Allocated 43,642 21,821
Committed to be allocated 21,821 21,821
Unallocated 370,962 392,783
Paid out to participants (1,252) (68)
Total shares 435,173 436,357