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Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | $ 219,612 | $ 216,013
Total gross loans, net of deferred fees, After one but within five years | 593,042 | 554,293
Total gross loans, net of deferred fees, After five years | 720,793 | 616,764
Total gross loans, net of deferred fees | 1,533,447 | 1,387,070
Loans maturing after one year with: fixed interest rates | 999,311 | 875,991
Loans maturing after one year with: floating interest rates | 314,524 | 295,066
Commercial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 148,549 | 150,364
Total gross loans, net of deferred fees, After one but within five years | 491,862 | 453,569
Total gross loans, net of deferred fees, After five years | 385,124 | 303,020
Total gross loans, net of deferred fees | 1,025,535 | 906,953
Commercial [Member] | Owner occupied RE [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 27,294 | 24,171
Total gross loans, net of deferred fees, After one but within five years | 163,994 | 167,425
Total gross loans, net of deferred fees, After five years | 166,881 | 125,222
Total gross loans, net of deferred fees | 358,169 | 316,818
Commercial [Member] | Non-owner occupied RE [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 37,270 | 39,519
Total gross loans, net of deferred fees, After one but within five years | 182,889 | 165,764
Total gross loans, net of deferred fees, After five years | 135,150 | 107,515
Total gross loans, net of deferred fees | 355,309 | 312,798
Commercial [Member] | Business [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 66,961 | 73,588
Total gross loans, net of deferred fees, After one but within five years | 123,166 | 107,584
Total gross loans, net of deferred fees, After five years | 48,275 | 44,986
Total gross loans, net of deferred fees | 238,402 | 226,158
Commercial [Member] | Construction [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 17,024 | 13,086
Total gross loans, net of deferred fees, After one but within five years | 21,813 | 12,796
Total gross loans, net of deferred fees, After five years | 34,818 | 25,297
Total gross loans, net of deferred fees | 73,655 | 51,179
Consumer [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 71,063 | 65,649
Total gross loans, net of deferred fees, After one but within five years | 101,180 | 100,724
Total gross loans, net of deferred fees, After five years | 335,669 | 313,744
Total gross loans, net of deferred fees | 507,912 | 480,117
Consumer [Member] | Other [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 7,584 | 7,203
Total gross loans, net of deferred fees, After one but within five years | 10,169 | 11,371
Total gross loans, net of deferred fees, After five years | 4,696 | 4,001
Total gross loans, net of deferred fees | 22,449 | 22,575
Consumer [Member] | Real estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 32,872 | 30,172
Total gross loans, net of deferred fees, After one but within five years | 62,050 | 61,809
Total gross loans, net of deferred fees, After five years | 195,511 | 181,069
Total gross loans, net of deferred fees | 290,433 | 273,050
Consumer [Member] | Home equity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 9,518 | 13,331
Total gross loans, net of deferred fees, After one but within five years | 28,079 | 25,807
Total gross loans, net of deferred fees, After five years | 119,033 | 117,003
Total gross loans, net of deferred fees | 156,630 | 156,141
Consumer [Member] | Construction [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans, net of deferred fees, One year or less | 21,089 | 14,943
Total gross loans, net of deferred fees, After one but within five years | 882 | 1,737
Total gross loans, net of deferred fees, After five years | 16,429 | 11,671
Total gross loans, net of deferred fees | $ 38,400 | $ 28,351

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