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Loans and Allowance for Loan Losses - Amortized Cost Basis of Loans on Nonaccrual Status and Nonaccrual Loans Individually Evaluated (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | $ 9,356 |
Financing Receivable, Nonaccrual | 20,440 | $ 25,118
Construction and Land Development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 0 |
Financing Receivable, Nonaccrual | 38 | 41
Agricultural Real Estate Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 0 |
Financing Receivable, Nonaccrual | 369 | 479
1-4 Family Residential Properties |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 3,220 |
Financing Receivable, Nonaccrual | 7,299 | 7,379
Multifamily Residential Properties |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 1,960 |
Financing Receivable, Nonaccrual | 2,243 | 3,137
Commercial Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 2,127 |
Financing Receivable, Nonaccrual | 4,412 | 4,351
Loans Secured by Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 7,307 |
Financing Receivable, Nonaccrual | 14,361 | 15,387
Agricultural Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 228 |
Financing Receivable, Nonaccrual | 837 | 769
Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 1,691 |
Financing Receivable, Nonaccrual | 4,823 | 8,441
Consumer Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing Receivable, Nonaccrual, No Allowance | 130 |
Financing Receivable, Nonaccrual | $ 419 | $ 521

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