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Loans and Allowance for Credit Losses (Allowance for Credit Losses on Financing Receivables) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Allowance for credit losses: |  |
Beginning balance | $ 9,781 | $ 8,726
Charge-offs | (527) | (317)
Recoveries | 175 | 91
Net charge-offs | (352) | (226)
Provision | 489 | 427
Ending balance | 9,918 | 8,927
Commercial and Residential Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |
Allowance for credit losses: |  |
Beginning balance | 2,460 | 2,787
Charge-offs | (379) | (29)
Recoveries | 9 | 7
Net charge-offs | (370) | (22)
Provision | 451 | (475)
Ending balance | 2,541 | 2,290
Residential Portfolio Segment [Member] |  |
Allowance for credit losses: |  |
Beginning balance | 2,284 | 1,953
Charge-offs | (138) | (223)
Recoveries | 13 | 11
Net charge-offs | (125) | (212)
Provision | 200 | 390
Ending balance | 2,359 | 2,131
Commercial Real Estate Portfolio Segment [Member] |  |
Allowance for credit losses: |  |
Beginning balance | 2,594 | 2,610
Recoveries | 10 | 11
Net charge-offs | 10 | 11
Provision | 39 | 291
Ending balance | 2,643 | 2,912
Commercial Portfolio Segment [Member] |  |
Allowance for credit losses: |  |
Beginning balance | 2,241 | 1,145
Charge-offs |  | (65)
Recoveries | 143 | 58
Net charge-offs | 143 | (7)
Provision | (226) | 200
Ending balance | 2,158 | 1,338
Consumer Portfolio Segment [Member] |  |
Allowance for credit losses: |  |
Beginning balance | 202 | 231
Charge-offs | (10) |
Recoveries |  | 4
Net charge-offs | (10) | 4
Provision | 25 | 21
Ending balance | $ 217 | $ 256

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + 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)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition The increase (decrease) in the allowance for credit losses related to financing receivables. + 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) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + 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=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + 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)(2) -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 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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