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Loans and Allowance for Loan Losses - Loan Summary (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | $ 2,487,129 | $ 2,382,243 |  |
Less: Allowance for loan losses | (18,370) | (18,346) | $ (13,431) | $ (10,243)
Loans, net | 2,468,759 | 2,363,897 |  |
Purchased Credit Impaired Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 29,148 | 32,064 |  |
Less: Allowance for loan losses | (376) | (309) |  |
Loans, net | 28,772 | 31,755 |  |
All Other Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 2,457,981 | 2,350,179 |  |
Less: Allowance for loan losses | (17,994) | (18,037) |  |
Loans, net | 2,439,987 | 2,332,142 |  |
Commercial Real Estate [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 1,070,641 | 1,012,976 |  |
Less: Allowance for loan losses | (7,637) | (7,579) | (5,963) | (4,508)
Commercial Real Estate [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 13,877 | 16,123 |  |
Commercial Real Estate [Member] | All Other Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 1,056,764 | 996,853 |  |
Less: Allowance for loan losses | (7,637) | (7,579) |  |
Consumer Real Estate [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 432,486 | 443,930 |  |
Less: Allowance for loan losses | (3,308) | (3,471) | (3,301) | (2,576)
Consumer Real Estate [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 9,597 | 10,258 |  |
Less: Allowance for loan losses | (158) | (88) |  |
Consumer Real Estate [Member] | All Other Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 422,889 | 433,672 |  |
Less: Allowance for loan losses | (3,150) | (3,383) |  |
Construction and Land Development [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 285,973 | 278,075 |  |
Less: Allowance for loan losses | (1,968) | (2,076) | (1,484) | (1,127)
Construction and Land Development [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 5,350 | 5,348 |  |
Construction and Land Development [Member] | All Other Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 280,623 | 272,727 |  |
Less: Allowance for loan losses | (1,968) | (2,076) |  |
Commercial and Industrial [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 686,010 | 634,446 |  |
Less: Allowance for loan losses | (5,347) | (5,107) | (2,557) | (1,957)
Commercial and Industrial [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 303 | 308 |  |
Less: Allowance for loan losses | (216) | (218) |  |
Commercial and Industrial [Member] | All Other Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 685,707 | 634,138 |  |
Less: Allowance for loan losses | (5,131) | (4,889) |  |
Consumer and Other [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 12,019 | 12,816 |  |
Less: Allowance for loan losses | (110) | (113) | $ (126) | $ (75)
Consumer and Other [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 21 | 27 |  |
Less: Allowance for loan losses | (2) | (3) |  |
Consumer and Other [Member] | All Other Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 11,998 | 12,789 |  |
Less: Allowance for loan losses | $ (108) | $ (110) |  |

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