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Loans and Allowance for Loan Losses (FY) (Details 7) - 12 months ended Dec. 31, 2017 $ in Thousands | USD ($) | Loan | contract
--- | --- | --- | ---
Financing Receivable, Modifications [Line Items] |  |  |
Number of Contracts |  | 0 | 0
Construction and Land Development [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Contracts | contract |  |  | 1
Pre-Modification Outstanding Recorded Investment | $ 278 |  |
Post-Modification Outstanding Recorded Investment | 278 |  |
Commercial and Industrial [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Contracts | contract |  |  | 1
Pre-Modification Outstanding Recorded Investment | 164 |  |
Post-Modification Outstanding Recorded Investment | $ 164 |  |

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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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