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Loans and Allowance for Credit Losses (Allowance for Credit Losses on Financing Receivables) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Allowance for credit losses: |  |  |  |
Beginning balance | $ 9,132 | $ 8,358 | $ 8,726 | $ 8,316
Charge-offs | (287) | (568) | (1,450) | (1,578)
Recoveries | 105 | 219 | 273 | 446
Net charge-offs | (182) | (349) | (1,177) | (1,132)
Provision | 345 | 605 | 1,746 | 1,430
Ending balance | 9,295 | 8,614 | 9,295 | 8,614
Commercial and Residential Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 2,349 | 1,744 | 2,787 | 1,646
Charge-offs |  | (9) | (54) | (263)
Recoveries | 11 | 8 | 27 | 24
Net charge-offs | 11 | (1) | (27) | (239)
Provision | (119) | 275 | (519) | 611
Ending balance | 2,241 | 2,018 | 2,241 | 2,018
Residential Portfolio Segment [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 2,096 | 2,035 | 1,953 | 2,181
Charge-offs | (70) | (407) | (393) | (525)
Recoveries | 11 | 121 | 32 | 188
Net charge-offs | (59) | (286) | (361) | (337)
Provision | 6 | 331 | 451 | 236
Ending balance | 2,043 | 2,080 | 2,043 | 2,080
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 2,802 | 2,871 | 2,610 | 2,999
Charge-offs | (100) |  | (100) | (503)
Recoveries | 8 | 10 | 27 | 20
Net charge-offs | (92) | 10 | (73) | (483)
Provision | 174 | 306 | 347 | 671
Ending balance | 2,884 | 3,187 | 2,884 | 3,187
Commercial Portfolio Segment [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 1,652 | 677 | 1,145 | 558
Charge-offs | (99) | (139) | (870) | (264)
Recoveries | 67 | 79 | 167 | 201
Net charge-offs | (32) | (60) | (703) | (63)
Provision | 184 | 300 | 1,362 | 422
Ending balance | 1,804 | 917 | 1,804 | 917
Consumer Portfolio Segment [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 233 | 206 | 231 | 156
Charge-offs | (18) | (13) | (33) | (23)
Recoveries | 8 | 1 | 20 | 13
Net charge-offs | (10) | (12) | (13) | (10)
Provision | 100 | (40) | 105 | 8
Ending balance | $ 323 | 154 | $ 323 | 154
Unallocated Financing Receivables [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance |  | 825 |  | 776
Provision |  | (567) |  | (518)
Ending balance |  | $ 258 |  | $ 258

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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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