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Loans and Allowance for Loan Losses (Loan Summary) (Details) - USD ($) | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | $ 1,777,239,000 | $ 1,323,258,000 |
Less: Allowance for loan losses | (8,275,055) | (5,860,291) | $ (5,105,000)
Loans, net | 1,768,963,569 | 1,317,397,909 |
Commercial Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 860,027,000 | 642,988,000 |
Less: Allowance for loan losses | (3,639,000) | (2,465,000) | (2,369,000)
Consumer Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 407,254,000 | 293,457,000 |
Less: Allowance for loan losses | (1,789,000) | (1,596,000) | (1,382,000)
Construction and Land Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 187,895,000 | 135,409,000 |
Less: Allowance for loan losses | (795,000) | (521,000) | (717,000)
Commercial and Industrial [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 308,254,000 | 238,087,000 |
Less: Allowance for loan losses | (1,746,000) | (1,062,000) | (520,000)
Consumer and Other [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 13,809,000 | 13,317,000 |
Less: Allowance for loan losses | (306,000) | (216,000) | $ (117,000)
Purchased Credit Impaired Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 34,158,000 | 32,794,000 |
Less: Allowance for loan losses | 0 | (16,000) |
Loans, net | 34,158,000 | 32,778,000 |
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 17,682,000 | 17,903,000 |
Less: Allowance for loan losses | 0 | (16,000) |
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 8,712,000 | 7,450,000 |
Less: Allowance for loan losses | 0 | 0 |
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 4,602,000 | 5,120,000 |
Less: Allowance for loan losses | 0 | 0 |
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 2,557,000 | 858,000 |
Less: Allowance for loan losses | 0 | 0 |
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 605,000 | 1,463,000 |
Less: Allowance for loan losses | 0 | 0 |
All Other Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 1,743,081,000 | 1,290,464,000 |
Less: Allowance for loan losses | (8,275,000) | (5,844,000) |
Loans, net | 1,734,806,000 | 1,284,620,000 |
All Other Loans [Member] | Commercial Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 842,345,000 | 625,085,000 |
All Other Loans [Member] | Consumer Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 398,542,000 | 286,007,000 |
All Other Loans [Member] | Construction and Land Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 183,293,000 | 130,289,000 |
All Other Loans [Member] | Commercial and Industrial [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | 305,697,000 | 237,229,000 |
All Other Loans [Member] | Consumer and Other [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans | $ 13,204,000 | $ 11,854,000 |

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