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Loans and Allowance for Loan Losses - Loan Risk Rating (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | $ 2,487,129 | $ 2,382,243
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,070,641 | 1,012,976
Consumer Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 432,486 | 443,930
Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 285,973 | 278,075
Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 686,010 | 634,446
Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 12,019 | 12,816
All Other Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 2,457,981 | 2,350,179
All Other Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 2,402,737 | 2,247,263
All Other Loans [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 44,190 | 91,611
All Other Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 4,263 | 4,812
All Other Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 6,743 | 6,359
All Other Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 48 | 134
All Other Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,056,764 | 996,853
All Other Loans [Member] | Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,011,291 | 922,153
All Other Loans [Member] | Commercial Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 38,170 | 66,287
All Other Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 3,922 | 4,446
All Other Loans [Member] | Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 3,381 | 3,967
All Other Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 422,889 | 433,672
All Other Loans [Member] | Consumer Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 418,604 | 417,302
All Other Loans [Member] | Consumer Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,234 | 14,218
All Other Loans [Member] | Consumer Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 44 | 46
All Other Loans [Member] | Consumer Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 3,007 | 2,020
All Other Loans [Member] | Consumer Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans |  | 86
All Other Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 280,623 | 272,727
All Other Loans [Member] | Construction and Land Development [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 280,299 | 269,350
All Other Loans [Member] | Construction and Land Development [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 245 | 3,296
All Other Loans [Member] | Construction and Land Development [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 79 | 81
All Other Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 685,707 | 634,138
All Other Loans [Member] | Commercial and Industrial [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 680,635 | 625,836
All Other Loans [Member] | Commercial and Industrial [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 4,489 | 7,673
All Other Loans [Member] | Commercial and Industrial [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 297 | 320
All Other Loans [Member] | Commercial and Industrial [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 238 | 261
All Other Loans [Member] | Commercial and Industrial [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 48 | 48
All Other Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 11,998 | 12,789
All Other Loans [Member] | Consumer and Other [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 11,908 | 12,622
All Other Loans [Member] | Consumer and Other [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 52 | 137
All Other Loans [Member] | Consumer and Other [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 38 | 30
Purchased Credit Impaired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 29,148 | 32,064
Purchased Credit Impaired Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 20,968 | 20,749
Purchased Credit Impaired Loans [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 5,204 | 7,427
Purchased Credit Impaired Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 75 | 76
Purchased Credit Impaired Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 2,901 | 3,812
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 13,877 | 16,123
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 11,088 | 11,072
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,592 | 3,381
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 17 | 19
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,180 | 1,651
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 9,597 | 10,258
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 8,173 | 8,382
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 206 | 224
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 58 | 57
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,160 | 1,595
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 5,350 | 5,348
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,430 | 1,008
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 3,405 | 3,820
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 515 | 520
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 303 | 308
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 257 | 262
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 46 | 46
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 21 | 27
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 20 | 25
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | $ 1 | $ 2

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