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Loans Receivable and Allowance for Loan Losses (Narrative) (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016 | Jul. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Outstanding Balance | $ 1,743,000 |  | $ 1,821,000 |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Carrying Amount | 1,356,000 |  | 1,386,000 | $ 1,368,000
Real Estate Acquired Through Foreclosure | 4,703,000 |  | 5,302,000 |
Loans and Leases Receivable, Gross | 719,649,000 |  | 714,105,000 |
Impaired Financing Receivable, Recorded Investment | 2,601,000 |  | 2,624,000 |
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,601,000 |  | 2,624,000 |
Write downs | 184,000 | $ 136,000 |  |
Gross Realized Losses on Loans | 0 |  |  |
Proceeds from Sale of Mortgage Loans Held-for-sale | 0 | 1,013,000 |  |
Commercial Rentals [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans and Leases Receivable, Gross | $ 79,200,000 |  |  |
Commercial Rentals [Member] | Loans Receivable [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Concentration Risk, Percentage | 11.00% |  |  |
Hospitality Lodging Industry [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans and Leases Receivable, Gross | $ 50,200,000 |  |  |
Hospitality Lodging Industry [Member] | Loans Receivable [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Concentration Risk, Percentage | 7.00% |  |  |
Troubled Debt Restructured Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired Financing Receivable, Related Allowance | $ 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 | 826,000 |  | 821,000 |
Real Estate Acquired Through Foreclosure | 135,000 |  |  |
Mortgage Loans in Process of Foreclosure, Amount | 801,000 |  |  |
Loans and Leases Receivable, Gross | 236,676,000 |  | 237,177,000 |
Impaired Financing Receivable, Recorded Investment | 83,000 |  | 23,000 |
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 83,000 |  | 23,000 |
Write downs | 39,000 | 0 |  |
Gross Realized Gains on Loans | 30,000 |  |  |
Gross Realized Losses on Loans | 0 |  |  |
Proceeds from Sale of Mortgage Loans Held-for-sale | 1,000,000 |  |  |
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 | 530,000 |  | 565,000 |
Loans and Leases Receivable, Gross | 327,067,000 |  | 320,187,000 |
Impaired Financing Receivable, Recorded Investment | 2,518,000 |  | 2,601,000 |
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,518,000 |  | $ 2,601,000 |
Write downs | 85,000 | $ 129,000 |  |
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 |  |  |
Assets, Fair Value Adjustment | $ 499,000 |  |  |

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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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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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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522 + Details
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