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Loans Receivable and Allowance for Loan Losses (Narrative) (Details) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2017 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) property | Jun. 30, 2016 USD ($) | Dec. 31, 2016 USD ($) | Jul. 31, 2016 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Outstanding Balance | $ 1,689,000 |  | $ 1,689,000 |  | $ 1,821,000 |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Carrying Amount | 1,345,000 |  | 1,345,000 |  | 1,386,000 | $ 1,368,000
Real Estate Acquired Through Foreclosure | 4,523,000 |  | 4,523,000 |  | 5,302,000 |
Loans and Leases Receivable, Gross | 735,222,000 |  | 735,222,000 |  | 714,105,000 |
Impaired Financing Receivable, Recorded Investment | 3,198,000 |  | 3,198,000 |  | 2,624,000 |
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |  | 0 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 3,198,000 |  | 3,198,000 |  | 2,624,000 |
Write downs | 90,000 | $ 2,553,000 | 274,000 | $ 2,689,000 |  |
Gross Realized Losses on Loans |  |  | 0 |  |  |
Proceeds from Sale of Mortgage Loans Held-for-sale |  |  | 1,760,000 | 1,739,000 |  |
Commercial Rentals [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans and Leases Receivable, Gross | 78,400,000 |  | $ 78,400,000 |  |  |
Commercial Rentals [Member] | Loans Receivable [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage |  |  | 10.70% |  |  |
Hospitality Lodging Industry [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans and Leases Receivable, Gross | 50,000,000 |  | $ 50,000,000 |  |  |
Hospitality Lodging Industry [Member] | Loans Receivable [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage |  |  | 6.80% |  |  |
Troubled Debt Restructured Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Impaired Financing Receivable, Related Allowance | 0 |  | $ 0 |  | 0 |
Residential Real Estate Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Carrying Amount | 831,000 |  | 831,000 |  | 821,000 |
Real Estate Acquired Through Foreclosure | 0 |  | 0 |  |  |
Mortgage Loans in Process of Foreclosure, Amount | 630,000 |  | $ 630,000 |  |  |
Number Of Properties Under Foreclosure Proceedings | property |  |  | 11 |  |  |
Loans and Leases Receivable, Gross | 234,251,000 |  | $ 234,251,000 |  | 237,177,000 |
Impaired Financing Receivable, Recorded Investment | 23,000 |  | 23,000 |  | 23,000 |
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |  | 0 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 23,000 |  | 23,000 |  | 23,000 |
Write downs | 44,000 | 17,000 | 83,000 | 17,000 |  |
Gross Realized Gains on Loans |  | 22,000 |  | 54,000 |  |
Gross Realized Losses on Loans |  | 0 |  | 0 |  |
Proceeds from Sale of Mortgage Loans Held-for-sale |  | 726,000 |  | 1,700,000 |  |
Commercial Real Estate Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Carrying Amount | 514,000 |  | 514,000 |  | 565,000 |
Loans and Leases Receivable, Gross | 335,602,000 |  | 335,602,000 |  | 320,187,000 |
Impaired Financing Receivable, Recorded Investment | 3,175,000 |  | 3,175,000 |  | 2,601,000 |
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |  | 0 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 3,175,000 |  | 3,175,000 |  | $ 2,601,000 |
Write downs | 11,000 | $ 2,513,000 | 96,000 | $ 2,642,000 |  |
Gross Realized Gains on Loans | 67,000 |  |  |  |  |
Proceeds from Sale of Mortgage Loans Held-for-sale | 1,700,000 |  |  |  |  |
Delaware Bancshares, Inc. Acquisition [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Outstanding Balance | $ 1,397,000 |  | 1,397,000 |  |  |
Assets, Fair Value Adjustment |  |  | $ 499,000 |  |  |

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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and other-than-temporary impairments), for loans accounted for as debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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