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Fair Value Measurements (Details 2) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Assets - Beginning balance | $ 10,023 | $ 1,761
Realized gain included in earnings | 59 | 186
Unrealized loss included in other comprehensive income | (20) |
Purchases of available-for-sale securities |  | 8,076
Assets - Ending balance | 10,062 | 10,023
Liabilities - Beginning balance |  | 10
Realized loss included in earnings |  | 259
Liabilities - Ending balance |  | 269
Investment Securities [Member] |  |
Assets - Beginning balance | 9,794 | 1,718
Unrealized loss included in other comprehensive income | (20) |
Purchases of available-for-sale securities |  | 8,076
Assets - Ending balance | 9,774 | 9,794
Mortgage Banking Derivatives [Member] |  |
Assets - Beginning balance | 229 | 43
Realized gain included in earnings | 59 | 186
Assets - Ending balance | 288 | 229
Liabilities - Beginning balance | 269 | 10
Realized loss included in earnings | (47) | 259
Liabilities - Ending balance | $ 222 | $ 269

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- Definition Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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