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Securities (Narrative) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) security item | Dec. 31, 2015 USD ($)
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Available-for-sale Securities | $ 40,776 | $ 35,996
Available-for-sale Securities Pledged as Collateral | 11,756 | 11,582
Reportable Legal Entities [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Available-for-sale Securities | 24,637 | 13,440
Available-for-sale Securities, Gross Realized Gains | 487 | 52
Available-for-sale Securities, Gross Realized Losses | 0 | 3
US Treasuries [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Available-for-sale Securities | 1,833 |
US Agency Obligations [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Available-for-sale Securities | 13,113 | 18,810
Municipals [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Available-for-sale Securities | 9,947 | 5,034
Corporates [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Available-for-sale Securities | $ 3,878 | $ 1,505
S&P Rated AA [Member] | Mortgage Backed Securities, Other [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Number Of Securities Held | security | 7 |
S&P Rated AA [Member] | US Agency Obligations [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Number Of Securities Held | item | 10 |
S&P Rated AA [Member] | Municipals [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Number Of Securities Held | item | 13 |
S&P Rated AA [Member] | Corporates [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Number Of Securities Held | security | 5 |

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562 + Details
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