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MARKETABLE SECURITIES - Schedule of Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Cost Basis	$ 8,056	$ 26,585
Gross Unrealized Losses	(549)	(554)
Gross Unrealized Gains	269	1,030
Fair Value	7,776	27,061
Marketable debt securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis	6,994	25,523
Gross Unrealized Losses	0	(5)
Gross Unrealized Gains	64	83
Fair Value	7,058	25,601
Marketable equity securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis	1,062	1,062
Gross Unrealized Losses	(549)	(549)
Gross Unrealized Gains	205	947
Fair Value	$ 718	$ 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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