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Fair Value Measurements (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Assets - Beginning balance | $ 1,832 | $ 243
Realized loss included in earnings - net mortgage banking derivatives | (71) | 90
Purchases of available-for-sale securities |  | 1,500
Principal redemption |  | (1)
Assets - Ending balance | 1,761 | 1,832
Liabilities - Beginning balance | 55 | 30
Realized loss included in earnings - net mortgage banking derivatives | (45) | 25
Liabilities - Ending balance | 10 | 55
Other Equity Investments [Member] |  |
Assets - Beginning balance | 1,718 | 219
Purchases of available-for-sale securities |  | 1,500
Principal redemption |  | (1)
Assets - Ending balance | 1,718 | 1,718
Mortgage Banking Derivatives [Member] |  |
Assets - Beginning balance | 114 | 24
Realized loss included in earnings - net mortgage banking derivatives | (71) | 90
Assets - Ending balance | 43 | 114
Liabilities - Beginning balance | 55 | 30
Realized loss included in earnings - net mortgage banking derivatives | (45) | 25
Liabilities - Ending balance | $ 10 | $ 55

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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