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Non Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 USD ($) loan | Mar. 31, 2017 USD ($) loan
Real estate – commercial mortgage |  |
Restructured loans |  |
Number of Loans | loan |  | 2
Pre- Modification Outstanding Recorded Investment |  | $ 146
Post- Modification Outstanding Recorded Investment |  | $ 156
Non purchased loans and leases |  |
Restructured loans |  |
Number of Loans | loan | 4 | 4
Pre- Modification Outstanding Recorded Investment | $ 659 | $ 323
Post- Modification Outstanding Recorded Investment | $ 654 | $ 330
Non purchased loans and leases | Real estate – 1-4 family mortgage |  |
Restructured loans |  |
Number of Loans | loan | 3 | 2
Pre- Modification Outstanding Recorded Investment | $ 576 | $ 177
Post- Modification Outstanding Recorded Investment | $ 576 | $ 174
Non purchased loans and leases | Real estate – commercial mortgage |  |
Restructured loans |  |
Number of Loans | loan | 1 |
Pre- Modification Outstanding Recorded Investment | $ 83 |
Post- Modification Outstanding Recorded Investment | $ 78 |

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- Definition Troubled Debt Restructuring Financing Receivable Modifications [Abstract] + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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