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Loans and Allowance for Loan Losses - Loan Risk Rating (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 2,145,292 | $ 1,903,248
Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,009,035 | 905,306
Consumer Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 488,773 | 423,338
Construction and Land Development [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 253,445 | 227,626
Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 377,173 | 337,075
Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 16,866 | 9,903
All Other Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,109,806 | 1,876,261
All Other Loans [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,995,430 | 1,828,124
All Other Loans [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 101,832 | 39,084
All Other Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 8,993 | 5,828
All Other Loans [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 3,315 | 2,979
All Other Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 236 | 246
All Other Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 992,446 | 890,051
All Other Loans [Member] | Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 903,306 | 860,447
All Other Loans [Member] | Commercial Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 81,277 | 25,180
All Other Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 7,225 | 4,057
All Other Loans [Member] | Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 638 | 367
All Other Loans [Member] | Commercial Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
All Other Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 476,823 | 416,797
All Other Loans [Member] | Consumer Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 468,494 | 413,192
All Other Loans [Member] | Consumer Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 5,697 | 989
All Other Loans [Member] | Consumer Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 748 | 738
All Other Loans [Member] | Consumer Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,722 | 1,713
All Other Loans [Member] | Consumer Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 162 | 165
All Other Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 246,966 | 223,168
All Other Loans [Member] | Construction and Land Development [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 238,701 | 216,459
All Other Loans [Member] | Construction and Land Development [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 7,587 | 6,089
All Other Loans [Member] | Construction and Land Development [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
All Other Loans [Member] | Construction and Land Development [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 678 | 620
All Other Loans [Member] | Construction and Land Development [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
All Other Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 377,030 | 336,668
All Other Loans [Member] | Commercial and Industrial [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 368,506 | 328,564
All Other Loans [Member] | Commercial and Industrial [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 7,233 | 6,786
All Other Loans [Member] | Commercial and Industrial [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,020 | 1,033
All Other Loans [Member] | Commercial and Industrial [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 221 | 228
All Other Loans [Member] | Commercial and Industrial [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 50 | 57
All Other Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 16,541 | 9,577
All Other Loans [Member] | Consumer and Other [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 16,423 | 9,462
All Other Loans [Member] | Consumer and Other [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 38 | 40
All Other Loans [Member] | Consumer and Other [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
All Other Loans [Member] | Consumer and Other [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 56 | 51
All Other Loans [Member] | Consumer and Other [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 24 | 24
Purchased Credit Impaired Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 35,486 | 26,987
Purchased Credit Impaired Loans [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 23,859 | 18,974
Purchased Credit Impaired Loans [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 6,689 | 5,841
Purchased Credit Impaired Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 80 | 199
Purchased Credit Impaired Loans [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 4,858 | 1,973
Purchased Credit Impaired Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 16,589 | 15,255
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 13,220 | 12,473
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,189 | 2,234
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 21 | 139
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,159 | 409
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 11,950 | 6,541
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 8,122 | 5,258
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 743 | 38
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 59 | 60
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 3,026 | 1,185
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 6,479 | 4,458
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,169 | 902
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 3,743 | 3,556
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 567 | 0
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 143 | 407
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 48 | 41
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 95 | 366
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 325 | 326
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 300 | 300
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 14 | 13
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 11 | 13
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 0 | $ 0

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