MARKETABLE SECURITIES (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2013	Dec. 31, 2012
Current available-for-sale marketable securities
Amortized Cost	$ 8,934	$ 13,608
Gross Unrealized Gains	17,406	6,996
Gross Unrealized Losses	0	0
Marketable securities	26,340	20,604
Corporate debt securities
Current available-for-sale marketable securities
Amortized Cost	1,007	13,608
Gross Unrealized Gains	8	19
Gross Unrealized Losses	0	0
Marketable securities	1,015	13,627
Total debt securities
Current available-for-sale marketable securities
Amortized Cost	1,007	13,608
Gross Unrealized Gains	8	19
Gross Unrealized Losses	0	0
Marketable securities	1,015	13,627
Equity securities
Current available-for-sale marketable securities
Amortized Cost	7,927	0
Gross Unrealized Gains	17,398	6,977
Gross Unrealized Losses	0	0
Marketable securities	$ 25,325	$ 6,977

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

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Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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-Section 50

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