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Loans and Allowance for Loan Losses - Impaired Loan Portfolio (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans with a valuation allowance, Related Allowance | $ 555 |  | $ 631
Total impaired loans, Recorded Investment | 4,956 |  | 4,173
Total impaired loans, Unpaid Principal Balance | 4,979 |  | 4,570
Total impaired loans, Average Recorded Investment | 4,681 | $ 4,295 |
Total impaired loans, Interest Income Recognized | 22 | 29 |
All Other Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 1,289 |  | 1,356
Impaired loans without a valuation allowance, Unpaid Principal Balance | 1,289 |  | 1,361
Impaired loans with a valuation allowance, Recorded Investment | 1,528 |  | 1,154
Impaired loans with a valuation allowance, Unpaid Principal Balance | 1,534 |  | 1,154
Impaired loans with a valuation allowance, Related Allowance | 555 |  | 475
Impaired loans without a valuation allowance, Average Recorded Investment | 1,323 | 2,231 |
Impaired loans without a valuation allowance, Interest Income Recognized | 7 | 26 |
Impaired loans with a valuation allowance, Average Recorded Investment | 1,341 | 852 |
Impaired loans with a valuation allowance, Interest Income Recognized | 13 | 10 |
All Other Loans [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 136 |  | 256
Impaired loans without a valuation allowance, Unpaid Principal Balance | 136 |  | 261
Impaired loans with a valuation allowance, Recorded Investment | 396 |  | 0
Impaired loans with a valuation allowance, Unpaid Principal Balance | 402 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 46 |  | 0
Impaired loans without a valuation allowance, Average Recorded Investment | 196 | 613 |
Impaired loans without a valuation allowance, Interest Income Recognized | 3 | 20 |
Impaired loans with a valuation allowance, Average Recorded Investment | 198 | 24 |
Impaired loans with a valuation allowance, Interest Income Recognized | 2 | 1 |
All Other Loans [Member] | Consumer Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 546 |  | 553
Impaired loans without a valuation allowance, Unpaid Principal Balance | 546 |  | 553
Impaired loans with a valuation allowance, Recorded Investment | 974 |  | 994
Impaired loans with a valuation allowance, Unpaid Principal Balance | 974 |  | 994
Impaired loans with a valuation allowance, Related Allowance | 379 |  | 343
Impaired loans without a valuation allowance, Average Recorded Investment | 550 | 967 |
Impaired loans without a valuation allowance, Interest Income Recognized | 4 | 4 |
Impaired loans with a valuation allowance, Average Recorded Investment | 984 | 99 |
Impaired loans with a valuation allowance, Interest Income Recognized | 9 | 0 |
All Other Loans [Member] | Construction and Land Development [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 607 |  | 547
Impaired loans without a valuation allowance, Unpaid Principal Balance | 607 |  | 547
Impaired loans with a valuation allowance, Recorded Investment | 0 |  | 0
Impaired loans with a valuation allowance, Unpaid Principal Balance | 0 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 0
Impaired loans without a valuation allowance, Average Recorded Investment | 577 | 573 |
Impaired loans without a valuation allowance, Interest Income Recognized | 0 | 0 |
Impaired loans with a valuation allowance, Average Recorded Investment | 0 | 28 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 0 |
All Other Loans [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 0 |  | 0
Impaired loans without a valuation allowance, Unpaid Principal Balance | 0 |  | 0
Impaired loans with a valuation allowance, Recorded Investment | 158 |  | 160
Impaired loans with a valuation allowance, Unpaid Principal Balance | 158 |  | 160
Impaired loans with a valuation allowance, Related Allowance | 130 |  | 132
Impaired loans without a valuation allowance, Average Recorded Investment | 0 | 50 |
Impaired loans without a valuation allowance, Interest Income Recognized | 0 | 1 |
Impaired loans with a valuation allowance, Average Recorded Investment | 159 | 644 |
Impaired loans with a valuation allowance, Interest Income Recognized | 2 | 9 |
All Other Loans [Member] | Consumer and Other [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 0 |  | 0
Impaired loans without a valuation allowance, Unpaid Principal Balance | 0 |  | 0
Impaired loans with a valuation allowance, Recorded Investment | 0 |  | 0
Impaired loans with a valuation allowance, Unpaid Principal Balance | 0 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 0
Impaired loans without a valuation allowance, Average Recorded Investment | 0 | 28 |
Impaired loans without a valuation allowance, Interest Income Recognized | 0 | 1 |
Impaired loans with a valuation allowance, Average Recorded Investment | 0 | 57 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 0 |
Purchased Credit Impaired Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 2,139 |  | 1,663
Impaired loans with a valuation allowance, Unpaid Principal Balance | 2,156 |  | 2,055
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 156
Impaired loans with a valuation allowance, Average Recorded Investment | 2,017 | 1,212 |
Impaired loans with a valuation allowance, Interest Income Recognized | 2 | (7) |
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 1,010 |  | 17
Impaired loans with a valuation allowance, Unpaid Principal Balance | 1,019 |  | 99
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 17
Impaired loans with a valuation allowance, Average Recorded Investment | 964 | 845 |
Impaired loans with a valuation allowance, Interest Income Recognized | 1 | (10) |
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 486 |  | 1,205
Impaired loans with a valuation allowance, Unpaid Principal Balance | 491 |  | 1,371
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 74
Impaired loans with a valuation allowance, Average Recorded Investment | 456 | 367 |
Impaired loans with a valuation allowance, Interest Income Recognized | 1 | 3 |
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 253 |  | 0
Impaired loans with a valuation allowance, Unpaid Principal Balance | 254 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 0
Impaired loans with a valuation allowance, Average Recorded Investment | 231 | 0 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 0 |
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 376 |  | 396
Impaired loans with a valuation allowance, Unpaid Principal Balance | 378 |  | 534
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 59
Impaired loans with a valuation allowance, Average Recorded Investment | 355 | 0 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 0 |
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 14 |  | 45
Impaired loans with a valuation allowance, Unpaid Principal Balance | 14 |  | 51
Impaired loans with a valuation allowance, Related Allowance | 0 |  | $ 6
Impaired loans with a valuation allowance, Average Recorded Investment | 11 | 0 |
Impaired loans with a valuation allowance, Interest Income Recognized | $ 0 | $ 0 |

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