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Fair Value Measurements and Fair Value of Financial Instruments (Details) - Schedule of fair value no recurring item basis - Municipal Securities [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Fair value | $ 9,377 | $ 9,632
Valuation Techniques | Discounted Cash Flows | Discounted Cash Flows
Unobservable Input | Discount Rate | Discount Rate
Range | 2.90% | 2.90%

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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition Description of significant assumptions used by management to measure fair value. + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Disclosures concerning the reasons for transfers into Level 3 of the fair value hierarchy. + 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)(3) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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