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PREMISES AND EQUIPMENT - Summary of Premises and Equipment (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
USD ($)
branchLocation
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross $ 59,663 $ 65,883  
Less accumulated depreciation 30,335 31,838  
Bank premises and equipment, net 29,328 34,045  
Depreciation expense $ 2,100 2,300 $ 3,200
Bank branch location closures | branchLocation 5    
Reduction to gross premised related to pending sale $ 6,200    
Reduction in accumulated depreciation, write-offs and write-downs related to pending sale (2,900)    
Land      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross 7,583 8,586  
Buildings and improvements      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross 24,813 27,852  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross 5,359 5,593  
Furniture and equipment      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross 21,849 23,681  
Construction in progress      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross $ 59 $ 171