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MARKETABLE SECURITIES - Schedule of Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Cost Basis	$ 2,817	$ 4,995
Gross Unrealized Losses	(587)	(543)
Gross Unrealized Gains	202	386
Fair Value	2,432	4,838
Marketable debt securities(1)
Debt Securities, Available-for-sale [Line Items]
Cost Basis	1,993	4,171
Gross Unrealized Losses	0	0
Gross Unrealized Gains	20	37
Fair Value	2,013	4,208
Marketable equity securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis	824	824
Gross Unrealized Losses	(587)	(543)
Gross Unrealized Gains	182	349
Fair Value	$ 419	$ 630

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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