NOTE 4: MARKETABLE SECURITIES

The following is a summary of available-for-sale marketable securities:


	June 30, 2018 (Unaudited)
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Available-for-sale—matures within one year:
Corporate bonds	$	8,078	$	—	$	(73	)	$	8,005

		8,078		—		(73	)		8,005
Available-for-sale—matures after one year through five years:
Certificate of deposits		747		—		—			747
Government bonds		501		—		(12	)		489
Corporate bonds		74,679		11		(1,485	)		73,205

		75,927		11		(1,497	)		74,441
Total	$	84,005	$	11	$	(1,570	)	$	82,446


	December 31, 2017 (Audited)
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Available-for-sale—matures within one year:
Corporate bonds	$	11,803	$	3	$	(12	)	$	11,794

		11,803		3		(12	)		11,794
Available-for-sale—matures after one year through five years:
Certificate of deposits		747		—		—			747
Government bonds		501		—		(6	)		495
Corporate bonds		70,291		14		(677	)		69,628

		71,539		14		(683	)		70,870
Total	$	83,342	$	17	$	(695	)	$	82,664

The following table presents gross unrealized losses and fair values for those investments that were in an unrealized loss position as of June 30, 2018 and December 31, 2017, and the length of time that those investments have been in a continuous loss position:


	Less than 12 months					12 months or greater
	Fair value		Gross unrealized loss			Fair value		Gross unrealized loss
As of June 30, 2018 (unaudited)	$	44,032	$	(786	)	$	32,952	$	(784	)
As of December 31, 2017	$	49,921	$	(411	)	$	22,960	$	(284	)

As of June 30, 2018 and December 31, 2017, management believes the impairments are not other than temporary and therefore the impairment losses were recorded in accumulated other comprehensive income (loss).

The following table presents gross realized gains and losses from sale of available-for-sale marketable securities:


	Six months ended June 30,						Three months ended June 30,
	2018 (unaudited)			2017 (unaudited)			2018 (unaudited)			2017 (unaudited)
Gross realized gains from sale of available-for-sale marketable securities	$	4		$	6		$	—		$	6
Gross realized losses from sale of available-for-sale marketable securities	$	(2	)	$	(46	)	$	(2	)	$	(8	)