MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2015

Marketable Securities [Abstract]

Schedule of Marketable Securities With Contractual Maturities

Marketable securities with contractual maturities of less than one year are as follows:

	December 31,
	2014									2015
	Adjusted		Gross unrealized			Gross unrealized		Market		Adjusted		Gross unrealized			Gross unrealized		Market
	cost		losses			gains		value		cost		losses			gains		Value
Foreign banks and government debentures	$	19,923	$	(34	)	$	100	$	19,989	$	5,895	$	(15	)	$	16	$	5,896
Corporate debentures		9,393		-			66		9,459		4,393		(1	)		17		4,409
Corporate shares		-		-			-		-		3,762		-			1,936		5,698
Total available-for-sale marketable securities	$	29,316	$	(34	)	$	166	$	29,448	$	14,050	$	(16	)	$	1,969	$	16,003

Marketable securities with contractual maturities from one to three years are as follows:

	December 31,
	2014									2015
	Adjusted		Gross unrealized			Gross unrealized		Market		Adjusted		Gross unrealized			Gross unrealized		Market
	cost		losses			gains		value		cost		losses			gains		Value
Foreign banks and government debentures	$	28,240	$	(90	)	$	394	$	28,544	$	38,383	$	(117	)	$	149	$	38,415
Corporate debentures		19,626		(81	)		110		19,655		32,008		(143	)		43		31,908
Total available-for-sale marketable securities	$	47,866	$	(171	)	$	504	$	48,199	$	70,391	$	(260	)	$	192	$	70,323

Marketable securities with contractual maturities of more than three years are as follows:

	December 31,
	2014									2015
	Adjusted		Gross unrealized			Gross unrealized		Market		Adjusted		Gross unrealized			Gross unrealized		Market
	cost		Losses			gains		value		cost		Losses			gains		Value
Foreign banks and government debentures	$	34,248	$	(188	)	$	69	$	34,129	$	6,356	$	(71	)	$	-	$	6,285
Corporate debentures		32,326		(206	)		71		32,191		11,342		(136	)		-		11,206
Total available-for-sale marketable securities	$	66,574	$	(394	)	$	140	$	66,320	$	17,698	$	(207	)	$	-	$	17,491

Summary of Investments With Continuous Unrealized Losses and Related Fair Values

Investments with continuous unrealized losses for less than 12 months and 12 months or greater and their related fair values as of December 31, 2015 were as follows:

	December 31, 2015
	Investments with continuous unrealized losses for less than 12 months					Investments with continuous unrealized losses for 12 months or greater					Total investments with continuous unrealized losses
	Fair Value		Unrealized losses			Fair value		unrealized losses			Fair value		unrealized losses
Foreign banks and government debentures	$	16,041	$	(64	)	$	15,660	$	(139	)	$	31,701	$	(203	)
Corporate debentures		9,697		(93	)		24,347		(188	)		34,044		(281	)
Total available-for-sale marketable securities	$	25,738	$	(157	)	$	40,007	$	(327	)	$	65,745	$	(484	)