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Off-Balance-Sheet Activities (Tables)
12 Months Ended
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Notional amount of financial instrument
The following table summarizes our credit related financial instruments with off-balance-sheet risk as of December 31:
20202019
Unfunded commitments under lines of credit$241,637 $202,871 
Commercial and standby letters of credit5,964 4,575 
Commitments to grant loans26,939 20,778 
Total$274,540 $228,224