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Loans And Leases (Balance In ALLL And Recorded Investment In Loans By Portfolio Segment And Based On Impairment Method) (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Individually evaluated for impairment |  | $ 27 | $ 26 |  |
Collectively evaluated for impairment |  | 6,949 | 6,944 |  |
Total ending allowance balance |  | 6,976 | 6,970 | $ 6,942 | $ 6,925
Individually evaluated for impairment |  | 3,488 | 3,576 |  |
Collectively evaluated for impairment |  | 425,983 | 409,800 |  |
Subtotal |  | 429,471 | 413,376 |  |
Single-Family Residential [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Collectively evaluated for impairment |  | 1,039 | 912 |  |
Total ending allowance balance |  | 1,039 | 912 | 866 | 735
Individually evaluated for impairment |  | 115 | 116 |  |
Collectively evaluated for impairment |  | 99,294 | 95,462 |  |
Subtotal |  | 99,409 | 95,578 |  |
Multi-Family Residential [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Collectively evaluated for impairment |  | 687 | 660 |  |
Total ending allowance balance |  | 687 | 660 | 629 | 716
Collectively evaluated for impairment |  | 40,018 | 35,665 |  |
Subtotal |  | 40,018 | 35,665 |  |
Construction [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Collectively evaluated for impairment |  | 614 | 672 |  |
Total ending allowance balance |  | 614 | 672 | 654 | 580
Collectively evaluated for impairment |  | 39,862 | 42,862 |  |
Subtotal |  | 39,862 | 42,862 |  |
Home Equity Lines of Credit [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Collectively evaluated for impairment |  | 521 | 597 |  |
Total ending allowance balance |  | 521 | 597 | 504 | 486
Collectively evaluated for impairment |  | 26,019 | 25,054 |  |
Subtotal |  | 26,019 | 25,054 |  |
Commercial [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Collectively evaluated for impairment |  | 1,869 | 1,984 |  |
Total ending allowance balance |  | 1,869 | 1,984 | 1,768 | 1,647
Individually evaluated for impairment |  | 211 | 277 |  |
Collectively evaluated for impairment |  | 100,521 | 101,698 |  |
Subtotal | [1] | 100,732 | 101,975 |  |
Real Estate Commercial [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Individually evaluated for impairment |  | 27 | 26 |  |
Collectively evaluated for impairment |  | 2,112 | 2,117 |  |
Total ending allowance balance |  | 2,139 | 2,143 | 2,491 | 2,727
Individually evaluated for impairment |  | 3,162 | 3,183 |  |
Collectively evaluated for impairment |  | 114,452 | 108,683 |  |
Subtotal |  | 117,614 | 111,866 |  |
Other [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Collectively evaluated for impairment |  | 107 | 2 |  |
Total ending allowance balance |  | 107 | 2 | $ 30 | $ 34
Collectively evaluated for impairment |  | 5,817 | 376 |  |
Subtotal |  | $ 5,817 | $ 376 |  |
[1] | Includes $5,859 and $6,008 of commercial leases at March 31, 2018 and December 31, 2017, respectively.

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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for 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 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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