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Loans and Allowance for Loan Losses - Performing and Impaired Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 1,836,989 | $ 1,777,239
All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 1,805,331 | 1,743,081
Purchased Credit Impaired Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 31,658 | 34,158
Commercial Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 878,587 | 860,027
Commercial Real Estate [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 861,547 | 842,345
Commercial Real Estate [Member] | Purchased Credit Impaired Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 17,040 | 17,682
Consumer Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 406,256 | 407,254
Consumer Real Estate [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 398,844 | 398,542
Consumer Real Estate [Member] | Purchased Credit Impaired Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 7,412 | 8,712
Construction and Land Development [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 204,696 | 187,895
Construction and Land Development [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 200,027 | 183,293
Construction and Land Development [Member] | Purchased Credit Impaired Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 4,669 | 4,602
Commercial and Industrial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 335,498 | 308,254
Commercial and Industrial [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 333,361 | 305,697
Commercial and Industrial [Member] | Purchased Credit Impaired Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 2,137 | 2,557
Consumer and Other [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 11,952 | 13,809
Consumer and Other [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 11,552 | 13,204
Consumer and Other [Member] | Purchased Credit Impaired Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 400 | 605
Performing [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 1,803,336 | 1,739,522
Performing [Member] | Commercial Real Estate [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 861,288 | 841,709
Performing [Member] | Consumer Real Estate [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 398,061 | 397,306
Performing [Member] | Construction and Land Development [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 199,326 | 182,746
Performing [Member] | Commercial and Industrial [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 333,109 | 304,673
Performing [Member] | Consumer and Other [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 11,552 | 13,088
Impaired Loans [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 1,995 | 3,559
Impaired Loans [Member] | Commercial Real Estate [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 259 | 636
Impaired Loans [Member] | Consumer Real Estate [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 783 | 1,236
Impaired Loans [Member] | Construction and Land Development [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 701 | 547
Impaired Loans [Member] | Commercial and Industrial [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 252 | 1,024
Impaired Loans [Member] | Consumer and Other [Member] | All Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 0 | $ 116

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