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Loans Receivable and Allowance for Loan Losses (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Outstanding Balance | $ 1,821 | $ 498 |
Acquired Loans with Specific Evidence of Deterioration in Credit Quality, Carrying Amount | 1,386 | 498 |
Real Estate Acquired Through Foreclosure | 5,302 | 2,847 |
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans | 163 | 515 | $ 451
Loans and Leases Receivable, Gross | 714,105 | 560,251 |
Impaired Financing Receivable, Recorded Investment | 2,624 | 9,228 |
Impaired Financing Receivable, Related Allowance |  | 1,613 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,624 | 2,855 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  | 6,373 |
Write downs | 2,951 | 3,198 | 1,546
Proceeds from Sale of Mortgage Loans Held-for-sale | 1,739 | 4,410 | 4,419
Servicing Asset at Amortized Cost | 35,500 | 32,900 |
Customer Concentration Risk [Member] | Loans Receivable [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Write-downs | 31 | 643 | $ 422
Hospitality Lodging Industry [Member] | Loans Receivable [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and Leases Receivable, Gross | $ 71,800 |  |
Concentration Risk, Percentage | 70.70% |  |
Automobile Dealers [Member] | Loans Receivable [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and Leases Receivable, Gross | $ 50,900 |  |
Concentration Risk, Percentage | 50.10% |  |
Troubled Debt Restructured Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired Financing Receivable, Related Allowance | $ 0 | 1,613 |
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 | 821 | 140 |
Real Estate Acquired Through Foreclosure | 297 |  |
Mortgage Loans in Process of Foreclosure, Amount | 421 |  |
Allowance for Loan and Lease Losses, Adjustments, Other |  | (254) |
Loans and Leases Receivable, Gross | 237,177 | 161,820 |
Allowance for Loan and Lease Losses, Real Estate |  | 1,069 |
Impaired Financing Receivable, Recorded Investment | 23 | 168 |
Impaired Financing Receivable, Related Allowance | 0 | 0 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 23 | $ 168 |
Historical loss factor |  | 0.23% | 0.30%
Write downs | 123 | $ 224 | $ 270
Gross Realized Gains on Loans | 54 | 113 | 150
Gross Realized Losses on Loans | 0 | 0 | 0
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 | 565 | 358 |
Allowance for Loan and Lease Losses, Adjustments, Other | 419 | 1,320 |
Allowance for Loan and Lease Losses, Period Increase (Decrease) | (883) |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses |  | 1,596 |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses, Decreases |  | 1,610 |
Loans and Leases Receivable, Gross | 320,187 | 279,123 |
Allowance for Loan and Lease Losses, Real Estate | 4,623 | 5,506 | 3,890
Impaired Financing Receivable, Recorded Investment | 2,601 | 9,017 |
Impaired Financing Receivable, Related Allowance |  | 1,613 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | $ 2,601 | 2,644 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  | $ 6,373 |
Historical loss factor | 0.80% | 0.70% |
Write downs | $ 2,711 | $ 2,883 | $ 1,196
Impaired Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 2,624 | 9,228 |
Impaired Financing Receivable, Related Allowance | 0 | 1,613 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment |  | 2,855 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  | 6,373 |
Impaired Loans Not Requiring an Allowance [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Write-downs | 831 | 1,971 |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,624 | 2,855 |
Impaired Loans Requiring an Allowance [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Allowance for Credit Losses, Write-downs |  | 73 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | $ 0 | $ 6,373 |

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- Definition Amount of other addition (reduction) in 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 15 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 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 reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6873192&loc=d3e21338-158488 + Details
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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 Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was 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 (b)(2) -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 reduction in the reserve for loans impairments as a result of current information and events which result in it being probable that estimated cash flows will be significantly higher than previously expected or because actual cash flows are significantly greater than cash flows previously expected for loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was 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 No definition available. + Details
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