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Loans and Allowance for Loan Losses - Past Due Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | $ 2,148 | $ 2,696
Total Past Due and NonAccrual | 5,751 | 5,921
Current Loans | 1,799,580 | 1,737,160
Total loans | 1,836,989 | 1,777,239
Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 124 | 272
Total Past Due and NonAccrual | 396 | 668
Current Loans | 861,151 | 841,677
Total loans | 878,587 | 860,027
Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 1,024 | 844
Total Past Due and NonAccrual | 2,717 | 2,928
Current Loans | 396,127 | 395,614
Total loans | 406,256 | 407,254
Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 624 | 547
Total Past Due and NonAccrual | 1,574 | 890
Current Loans | 198,453 | 182,403
Total loans | 204,696 | 187,895
Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 336 | 909
Total Past Due and NonAccrual | 878 | 1,165
Current Loans | 332,483 | 304,532
Total loans | 335,498 | 308,254
Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 40 | 124
Total Past Due and NonAccrual | 186 | 270
Current Loans | 11,366 | 12,934
Total loans | 11,952 | 13,809
Purchased Credit Impaired Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 31,658 | 34,158
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 17,040 | 17,682
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 7,412 | 8,712
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 4,669 | 4,602
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 2,137 | 2,557
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 400 | 605
30 to 60 Days Past Due and Accruing [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 2,545 | 2,160
30 to 60 Days Past Due and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 133 | 377
30 to 60 Days Past Due and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 1,026 | 1,168
30 to 60 Days Past Due and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 838 | 343
30 to 60 Days Past Due and Accruing [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 417 | 155
30 to 60 Days Past Due and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 131 | 117
61 to 89 Days Past Due and Accruing [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 368 | 481
61 to 89 Days Past Due and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 19
61 to 89 Days Past Due and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 226 | 462
61 to 89 Days Past Due and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 112 | 0
61 to 89 Days Past Due and Accruing [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 30 | 0
61 to 89 Days Past Due and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 0
Past Due 90 Days or More and Accruing [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 690 | 584
Past Due 90 Days or More and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 139 | 0
Past Due 90 Days or More and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 441 | 454
Past Due 90 Days or More and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, 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, Past Due [Line Items] |  |
Recorded investment, past due | 95 | 101
Past Due 90 Days or More and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | $ 15 | $ 29

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