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Loans and Allowance for Loan Losses - Past Due Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual | $ 2,072 | $ 2,696
Total Past Due and NonAccrual | 6,885 | 5,921
Current Loans | 1,800,816 | 1,737,160
Total loans | 1,840,569 | 1,777,239
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual | 272 | 272
Total Past Due and NonAccrual | 2,661 | 668
Current Loans | 868,982 | 841,677
Total loans | 888,942 | 860,027
Consumer Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual | 807 | 844
Total Past Due and NonAccrual | 2,495 | 2,928
Current Loans | 400,340 | 395,614
Total loans | 410,981 | 407,254
Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual | 655 | 547
Total Past Due and NonAccrual | 734 | 890
Current Loans | 181,605 | 182,403
Total loans | 187,009 | 187,895
Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual | 296 | 909
Total Past Due and NonAccrual | 667 | 1,165
Current Loans | 338,504 | 304,532
Total loans | 341,471 | 308,254
Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual | 42 | 124
Total Past Due and NonAccrual | 328 | 270
Current Loans | 11,385 | 12,934
Total loans | 12,166 | 13,809
Purchased Credit Impaired Loans [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans | 32,868 | 34,158
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans | 17,299 | 17,682
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans | 8,146 | 8,712
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans | 4,670 | 4,602
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans | 2,300 | 2,557
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans | 453 | 605
30 to 60 Days Past Due and Accruing [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 3,341 | 2,160
30 to 60 Days Past Due and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 1,625 | 377
30 to 60 Days Past Due and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 1,492 | 1,168
30 to 60 Days Past Due and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 343
30 to 60 Days Past Due and Accruing [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 92 | 155
30 to 60 Days Past Due and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 132 | 117
61 to 89 Days Past Due and Accruing [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 1,262 | 481
61 to 89 Days Past Due and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 764 | 19
61 to 89 Days Past Due and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 123 | 462
61 to 89 Days Past Due and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 79 | 0
61 to 89 Days Past Due and Accruing [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 165 | 0
61 to 89 Days Past Due and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 131 | 0
Past Due 90 Days or More and Accruing [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 210 | 584
Past Due 90 Days or More and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 0
Past Due 90 Days or More and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 73 | 454
Past Due 90 Days or More and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 0
Past Due 90 Days or More and Accruing [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | 114 | 101
Past Due 90 Days or More and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Recorded investment, past due | $ 23 | $ 29

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