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Loans and Allowance for Loan Losses - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Loans | $ 3,963,041,000 |  | $ 3,963,041,000 |  | $ 3,645,162,000
Interest receivable | 41,539,000 |  | 41,539,000 |  | 39,145,000
Reversal of interest income on nonaccrual loans | 24,000 | $ 12,000 | 35,000 | $ 25,000 |
Nonaccrual loans, no allowance | 1,300,000 |  | 1,300,000 |  | 1,200,000
Collateral-dependent loans | 9,000,000 |  | 9,000,000 |  | 8,500,000
Commitments to lend additional funds on Troubled Debt Restructurings (TDR) | 0 | $ 0 | 0 | $ 0 |
Mortgage Loans in Process of Foreclosure, Amount | 18,000 |  | 18,000 |  | 21,000
Accrued interest receivable on our loan portfolio | 14,600,000 |  | 14,600,000 |  | 13,300,000
TDRs in default |  |  | 139,000 |  |
Commercial Real Estate Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Loans | 1,834,734,000 |  | 1,834,734,000 |  | 1,598,172,000
Owner and nonowner-occupied real estate | 1,550,000,000 |  | 1,550,000,000 |  |
Loans secured by multi-family properties | 265,300,000 |  | 265,300,000 |  |
Loans secured by farmland | 21,600,000 |  | $ 21,600,000 |  |
General Loan Term |  |  | 20 years |  |
1-4 Family Residential Real Estate Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Loans | 640,706,000 |  | $ 640,706,000 |  | 651,140,000
1-4 Family Residential Real Estate Loans | Minimum |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
General Loan Term |  |  | 15 years |  |
1-4 Family Residential Real Estate Loans | Maximum |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
General Loan Term |  |  | 30 years |  |
Paycheck Protection Program |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Loans | 3,000,000 |  | $ 3,000,000 |  | 31,000,000
Commercial loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |
Loans | $ 428,974,000 |  | $ 428,974,000 |  | $ 418,998,000

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