Annual report pursuant to Section 13 and 15(d)

Allowance for Loan and Lease Losses - Summary of Investment in Loans Disaggregated Based on Method of Evaluating Impairment (Details)

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Allowance for Loan and Lease Losses - Summary of Investment in Loans Disaggregated Based on Method of Evaluating Impairment (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]    
Loans - Recorded Investment, Individually Evaluated for Impairment $ 8,829 $ 6,307
Loans - Recorded Investment, Collectively Evaluated for Impairment 2,379,703 1,760,875
Allowance for Credit Loss, Individually Evaluated for Impairment 4,079 1,444
Allowance for Credit Loss, Collectively Evaluated for Impairment 11,947 5,293
Commercial and Industrial Loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Loans - Recorded Investment, Individually Evaluated for Impairment 4,978 2,508
Loans - Recorded Investment, Collectively Evaluated for Impairment 570,008 280,441
Allowance for Credit Loss, Individually Evaluated for Impairment 3,488 1,422
Allowance for Credit Loss, Collectively Evaluated for Impairment 5,598 2,657
Real Estate | 1-4 Single Family Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Loans - Recorded Investment, Individually Evaluated for Impairment 1,637 1,988
Loans - Recorded Investment, Collectively Evaluated for Impairment 362,502 373,755
Allowance for Credit Loss, Individually Evaluated for Impairment 1 3
Allowance for Credit Loss, Collectively Evaluated for Impairment 146 28
Real Estate | Construction, Land and Development    
Financing Receivable Allowance For Credit Losses [Line Items]    
Loans - Recorded Investment, Individually Evaluated for Impairment 217 216
Loans - Recorded Investment, Collectively Evaluated for Impairment 415,271 259,168
Allowance for Credit Loss, Collectively Evaluated for Impairment 1,744 1,055
Real Estate | Commercial Real Estate (Including Multifamily)    
Financing Receivable Allowance For Credit Losses [Line Items]    
Loans - Recorded Investment, Individually Evaluated for Impairment 1,837 1,571
Loans - Recorded Investment, Collectively Evaluated for Impairment 954,906 752,241
Allowance for Credit Loss, Individually Evaluated for Impairment 500  
Allowance for Credit Loss, Collectively Evaluated for Impairment 4,343 1,451
Consumer Loans and Leases    
Financing Receivable Allowance For Credit Losses [Line Items]    
Loans - Recorded Investment, Individually Evaluated for Impairment 108 24
Loans - Recorded Investment, Collectively Evaluated for Impairment 11,630 22,745
Allowance for Credit Loss, Individually Evaluated for Impairment 90 19
Allowance for Credit Loss, Collectively Evaluated for Impairment 55 48
Municipal and Other Loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Loans - Recorded Investment, Individually Evaluated for Impairment 52  
Loans - Recorded Investment, Collectively Evaluated for Impairment 65,386 72,525
Allowance for Credit Loss, Collectively Evaluated for Impairment $ 61 $ 54