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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Guarantor Obligations The following table presents the notional amount and fair value of Arrow's off-balance sheet commitments to extend credit and commitments under standby letters of credit as of December 31, 2021 and 2020:
Balance at December 31,20212020
Notional Amount:
Commitments to Extend Credit$402,280 $399,882 
Standby Letters of Credit3,223 3,703 
Fair Value:
Commitments to Extend Credit$— $— 
Standby Letters of Credit24 28