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Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Summary of marketable securities

		December 31,
		2017				2018

Fair value through profit or loss ⁽¹⁾		$	1,209			$	1,156
Available-for-sale			12,929				8,757

		$	14,138			$	9,913

(1)	The Group recognized trading gains in the amount of $ 53 during the year ended December 31, 2018.

Summary of marketable securities classified as available-for-sale

		December 31,
		2017																2018
		Amortized cost				Unrealized losses				Unrealized gains				Market value				Amortized cost				Unrealized losses				Unrealized gains				Market value
Available-for-sale:

Corporate bonds		$	12,987			$	(58	)		$	-			$	12,929			$	8,851			$	(94	)		$	-			$	8,757

Schedule of marketable securities with contractual maturities

		Amortized				Unrealized gains (losses)								Market
		cost				Gains				Losses				value

Due within one year		$	3,326			$	-			$	(21	)		$	3,305

Due after one year through three years		$	5,525			$	-			$	(73	)		$	5,452

Total		$	8,851			$	-			$	(94	)		$	8,757

Schedule of changes in other comprehensive income of available for sale securities

		Other comprehensive income (loss)

Other comprehensive income from available-for-sale securities as of January 1, 2017		$	40
Gains reclassified into earnings from marketable securities			(94	)
Unrealized losses from available-for-sale securities			(4	)
Other comprehensive loss from available-for-sale securities as of December 31, 2017		$	(58	)

		Other comprehensive loss

Other comprehensive loss from available-for-sale securities as of January 1, 2018		$	(58	)
Unrealized losses from available-for-sale securities			(36	)
Other comprehensive loss from available-for-sale securities as of December 31, 2018		$	(94	)