MARKETABLE SECURITIES (Tables)

9 Months Ended

Sep. 30, 2013

Cash And Cash Equivalents [Abstract]

Summary of Maturity of Available for Sale Marketable Securities

The following is a summary of available-for-sale marketable securities at September 30, 2013 and December 31, 2012:


	As at September 30, 2013 (Unaudited)
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Available-for-sale securities - matures within one year:
Corporate bonds	$	4,110	$	12	$	(6	)	$	4,116

		4,110		12		(6	)		4,116
Available-for-sale securities - matures after one year through three years:
Corporate bonds		76,641		94		(348	)		76,387

		76,641		94		(348	)		76,387
Total	$	80,751	$	106	$	(354	)	$	80,503


	As at December 31, 2012 (Audited)
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Available-for-sale securities - matures within one year:
Corporate bonds	$	10,964	$	73	$	(4	)	$	11,033

		10,964		73		(4	)		11,033
Available-for-sale securities - matures after one year through three years:
Certificates of deposits		1,960		—		(1	)		1,959
Foreign government bond		573		2		—			575
Corporate bonds		55,622		391		(237	)		55,776

		58,155		393		(238	)		58,310
Total	$	69,119	$	466	$	(242	)	$	69,343

Summary of Gross Unrealized Losses and Fair Values on Investments

The following table presents gross unrealized losses and fair values for those investments that were in an unrealized loss position as of September 30, 2013 and December 31, 2012, 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 September 30, 2013	$	52,475	$	(353	)	$	369	$	(1	)
As of December 31, 2012	$	28,711	$	(241	)	$	489	$	(1	)

Summary of Gross Realized Gain and Loss from Sale of Available-for-Sale Marketable Securities

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


	Nine months ended September 30,						Three months ended September 30,
	2013			2012			2013			2012
	(unaudited)			(unaudited)			(unaudited)			(unaudited)
Gross realized gain from sale of available-for-sale marketable securities	$	322		$	208		$	66		$	45
Gross realized loss from sale of available-for-sale marketable securities	$	(21	)	$	(117	)	$	(4	)	$	(81	)