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Investment Securities (Details Textual) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($) Investment | Dec. 31, 2016 USD ($) Investment | Dec. 31, 2015 USD ($)
Investment Securities (Textual) |  |  |
Sale of investment securities | $ 9,700 | $ 33,500 |
Gain on sale of investment securities | $ 4 | $ 431 | $ 297
Number of investments, Less than 12 months | Investment | 25 | 63 |
Fair market value, less than 12 months | $ 27,800 |  |
Number of investments, 12 months or longer | Investment | 28 | 2 |
Fair market value,12 months or longer | $ 27,500 |  |
Securities pledged as collateral for repurchase agreements from brokers | $ 7,700 | $ 21,000 |
Securities pledged to secure client deposit |  | $ 21,100 |

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- Definition Investment securities. + References No definition available. + Details
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- Definition Investments with fair market value in continuous unrealized loss position for less than twelve months. + References No definition available. + Details
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- Definition Investments with fair market value In continuous unrealized loss position twelve months or longer. + References No definition available. + Details
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- Definition Number of investments in continuous unrealized loss position, less than twelve months. + References No definition available. + Details
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- Definition Number of investments in continuous unrealized loss position twelve months or longer. + References No definition available. + Details
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- Definition Securities pledged to secure client deposit. + References No definition available. + Details
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- Definition The fair value of available-for-sale securities that serve as collateral for borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5086-111524 + Details
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- Definition The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale. + References No definition available. + Details
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- Definition The cash inflow associated with the sale of debt securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
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