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Fair Value - Summary of Quantitative Information about Level 3 Fair Value Measurements (Detail) - Fair Value, Nonrecurring [Member] - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Impaired loans, net $ 2,777 $ 8,344
Selling Costs [Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Impaired loans, net   $ 8,108
Valuation Technique   Discounted appraised value technique
Unobservable Input Selling Costs Selling Costs
Range   7.00%
OREO   $ 157
Valuation Technique   Discounted appraised value technique
Unobservable Input   Selling Costs
Discount Rate [Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Impaired loans, net   $ 236
Valuation Technique   Discounted cash flows technique
Unobservable Input   Discount Rate
Range 7.00%  
OREO $ 74  
Valuation Technique Discounted appraised value technique  
Discount Rate [Member] | Appraised Value Technique Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Impaired loans, net $ 1,106  
Valuation Technique Discounted appraised value technique  
Unobservable Input Discount Rate  
Discount Rate [Member] | Cash Flows Technique [Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Impaired loans, net $ 152  
Valuation Technique Discounted cash flows technique  
Unobservable Input Discount Rate  
Discount Rate [Member] | Maximum [Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Range   7.00%
Discount Rate [Member] | Maximum [Member] | Appraised Value Technique Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Range 50.00%  
Discount Rate [Member] | Maximum [Member] | Cash Flows Technique [Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Range 6.50%  
Discount Rate [Member] | Minimum [Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Range   4.00%
Discount Rate [Member] | Minimum [Member] | Appraised Value Technique Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Range 25.00%  
Discount Rate [Member] | Minimum [Member] | Cash Flows Technique [Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Range 4.30%  
EV Multiple [Member]    
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items]    
Impaired loans, net $ 1,519  
Valuation Technique Enterprise Value ("EV") technique  
Unobservable Input EV Multiple  
Range 7.75%