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MARKETABLE SECURITIES - Schedule of Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Cost Basis	$ 4,995	$ 26,585
Gross Unrealized losses	(543)	(554)
Gross Unrealized gains	386	1,030
Fair Value	4,838	27,061
Marketable debt securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis	4,171
Gross Unrealized losses	0
Gross Unrealized gains	37
Fair Value	4,208
Marketable equity securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis	824	1,062
Gross Unrealized losses	(543)	(549)
Gross Unrealized gains	349	947
Fair Value	$ 630	$ 1,460

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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