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Loans and Allowance for Credit Losses - Purchased credit-impaired loans (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Loans |  |  |
Total Recorded Investment | $ 10,660 |  | $ 6,366
Related Allowance | 211 |  | 36
Purchased Credit Impaired Loans |  |  |
Loans |  |  |
Total Recorded Investment | 312 |  | 383
Related Allowance | 0 |  | 0
Fair value of acquired loans at acquisition | 0 | $ 0 |
Commercial | Purchased Credit Impaired Loans |  |  |
Loans |  |  |
Total Recorded Investment | $ 312 |  | $ 383

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- Definition The amount of any significant purchases of financing receivables during the reporting period. + 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 (e) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524 + Details
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- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
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