XML 61 R51.htm IDEA: XBRL DOCUMENT v3.21.2
Allowances for Loan Losses - Summary of Balance of Loans Individually Evaluated vs. Collectively Evaluated for Impairment (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]            
Allowance for Loan Losses, Ending balance $ 3,335 $ 2,875 $ 2,789 $ 2,838 $ 2,794 $ 2,702
Allowance for Loan Losses, Ending balance: individually evaluated for impairment 0   0      
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment 3,335   2,789      
Loans, Ending balance 668,672   236,840      
Loans, Ending balance: individually evaluated for impairment 136   297      
Ending balance: loans acquired with deteriorated credit quality 5,385          
Loans, Ending balance: collectively evaluated for impairment 668,536   237,137      
Agriculture Loans [Member]            
Loans and Leases Receivable Disclosure [Line Items]            
Allowance for Loan Losses, Ending balance 129 98 120 124 129 152
Allowance for Loan Losses, Ending balance: individually evaluated for impairment 0   0      
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment 129   120      
Loans, Ending balance 8,873   11,246      
Loans, Ending balance: individually evaluated for impairment 0   0      
Ending balance: loans acquired with deteriorated credit quality 0          
Loans, Ending balance: collectively evaluated for impairment 8,873   11,246      
Commercial Loans [Member]            
Loans and Leases Receivable Disclosure [Line Items]            
Allowance for Loan Losses, Ending balance 458 350 290 291 292 312
Allowance for Loan Losses, Ending balance: individually evaluated for impairment 0   0      
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment 458   290      
Loans, Ending balance 123,536   21,534      
Loans, Ending balance: individually evaluated for impairment 0   2      
Ending balance: loans acquired with deteriorated credit quality 1,918          
Loans, Ending balance: collectively evaluated for impairment 123,536   21,532      
Commercial Real Estate Loans [Member]            
Loans and Leases Receivable Disclosure [Line Items]            
Allowance for Loan Losses, Ending balance 363 342 314 307 264 255
Allowance for Loan Losses, Ending balance: individually evaluated for impairment 0   0      
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment 363   314      
Loans, Ending balance 309,079   27,261      
Loans, Ending balance: individually evaluated for impairment 0   0      
Ending balance: loans acquired with deteriorated credit quality 3,467          
Loans, Ending balance: collectively evaluated for impairment 309,079   27,261      
Residential Real Estate Loans [Member]            
Loans and Leases Receivable Disclosure [Line Items]            
Allowance for Loan Losses, Ending balance 2,370 1,670 1,702 1,687 1,640 1,707
Allowance for Loan Losses, Ending balance: individually evaluated for impairment 0   0      
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment 2,370   1,702      
Loans, Ending balance 216,526   167,536      
Loans, Ending balance: individually evaluated for impairment 136   295      
Ending balance: loans acquired with deteriorated credit quality 0          
Loans, Ending balance: collectively evaluated for impairment 216,390   167,241      
Consumer Loans [Member]            
Loans and Leases Receivable Disclosure [Line Items]            
Allowance for Loan Losses, Ending balance 20 23 35 30 33 43
Allowance for Loan Losses, Ending balance: individually evaluated for impairment 0   0      
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment 20   35      
Loans, Ending balance 4,309   2,514      
Loans, Ending balance: individually evaluated for impairment 0   0      
Ending balance: loans acquired with deteriorated credit quality 0          
Loans, Ending balance: collectively evaluated for impairment 4,309   2,514      
Municipal Loans [Member]            
Loans and Leases Receivable Disclosure [Line Items]            
Allowance for Loan Losses, Ending balance 29 16 18 19 17 13
Allowance for Loan Losses, Ending balance: individually evaluated for impairment 0   0      
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment 29   18      
Loans, Ending balance 6,351   6,749      
Loans, Ending balance: individually evaluated for impairment 0   0      
Ending balance: loans acquired with deteriorated credit quality 0          
Loans, Ending balance: collectively evaluated for impairment 6,351   6,749      
Unallocated [Member]            
Loans and Leases Receivable Disclosure [Line Items]            
Allowance for Loan Losses, Ending balance (34) $ 376 310 $ 380 $ 419 $ 220
Allowance for Loan Losses, Ending balance: individually evaluated for impairment 0   0      
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment $ (34)   $ 310