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Investment in Securities (Narrative) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract] |  |  |  |  |
Number of securities that had an unrealized loss | 17 |  | 17 |  | 136
Number of securities that had an unrealized loss, greater than 12 months | 15 |  | 15 |  | 61
Percentage of total securities | 6.00% |  | 6.00% |  | 43.00%
Proceeds from sales of securities available-for-sale | $ 3,547 | $ 48,977 | $ 4,648 | $ 58,520 |
Gross realized gains | 8 | $ 55 | 19 | $ 42 |
Securities pledged as collateral |  |  |  |  |

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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563 + Details
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