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Nature of Operations and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2018 | Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Stock or Unit Option Plan Expense | $ 0 |  |
Trading securities | 0 | $ 0 | $ 0
Loans held for sale | 2,194,000 | 5,287,000 |
Bank owned life insurance death benefits | 97,700,000 | 97,800,000 |
Borrowings against cash surrender value of bank owned life insurance | $ 0 | $ 0 |

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- Definition The face amount of loans that will be sold to other entities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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