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MARKETABLE SECURITIES - Schedule Of Maturity Dates (Details) $ in Thousands | Dec. 31, 2018 USD ($)
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Investments, Debt and Equity Securities [Abstract] |
Due in less than 12 months | $ 17,434
Due in 12 months to two years | 8,167
Available-for-sale Securities, Debt Maturities, Single Maturity Date | $ 25,601

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