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Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | --- | --- | ---
Ending Balance Attributable to Loans |  |  |  |  |  |
Individually evaluated for impairment | $ 407 |  | $ 331 |  |  |
Collectively evaluated for impairment | 19,273 |  | 18,442 |  |  |
Ending Balance | 19,680 | $ 19,395 | 18,773 | $ 19,504 | $ 19,926 | $ 19,946
Loans |  |  |  |  |  |
Individually evaluated for impairment | 7,371 |  | 8,600 |  |  |
Collectively evaluated for impairment | 1,853,044 |  | 1,831,594 |  |  |
Total | 1,862,348 |  | 1,845,040 |  |  |
Commercial Portfolio Segment [Member] |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Individually evaluated for impairment | 359 |  | 242 |  |  |
Collectively evaluated for impairment | 9,864 |  | 9,489 |  |  |
Ending Balance | 10,223 | 9,377 | 9,731 | 10,244 | 11,168 | 11,482
Loans |  |  |  |  |  |
Individually evaluated for impairment | 6,865 |  | 8,051 |  |  |
Collectively evaluated for impairment | 1,104,804 |  | 1,101,269 |  |  |
Total | 1,113,602 |  | 1,112,735 |  |  |
Residential Portfolio Segment [Member] |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Individually evaluated for impairment | 48 |  | 89 |  |  |
Collectively evaluated for impairment | 1,466 |  | 1,464 |  |  |
Ending Balance | 1,514 | 1,496 | 1,553 | 1,595 | 1,769 | 1,834
Loans |  |  |  |  |  |
Individually evaluated for impairment | 506 |  | 549 |  |  |
Collectively evaluated for impairment | 430,487 |  | 423,099 |  |  |
Total | 430,993 |  | 425,079 |  |  |
Consumer Portfolio Segment [Member] |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Collectively evaluated for impairment | 6,218 |  | 5,767 |  |  |
Ending Balance | 6,218 | 6,334 | 5,767 | 5,258 | 5,106 | 4,945
Loans |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Collectively evaluated for impairment | 317,753 |  | 307,226 |  |  |
Total | 317,753 |  | 307,226 |  |  |
Unallocated |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Collectively evaluated for impairment | 1,725 |  | 1,722 |  |  |
Ending Balance | 1,725 | $ 2,188 | 1,722 | $ 2,407 | $ 1,883 | $ 1,685
Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses | 0 |  | 0 |  |  |
Loans |  |  |  |  |  |
Financing Receivable, Net | 1,933 |  | 4,846 |  |  |
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Portfolio Segment [Member] |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses | 0 |  | 0 |  |  |
Loans |  |  |  |  |  |
Financing Receivable, Net | 1,933 |  | 3,415 |  |  |
Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Portfolio Segment [Member] |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses | 0 |  | 0 |  |  |
Loans |  |  |  |  |  |
Financing Receivable, Net | 0 |  | 1,431 |  |  |
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Portfolio Segment [Member] |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses | 0 |  | 0 |  |  |
Loans |  |  |  |  |  |
Financing Receivable, Net | 0 |  | 0 |  |  |
Receivables Acquired with Deteriorated Credit Quality [Member] | Unallocated |  |  |  |  |  |
Ending Balance Attributable to Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses | $ 0 |  | $ 0 |  |  |

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