FAIR VALUE MEASUREMENTS (Details 2) (Corporate notes, USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Corporate notes
Marketable securities with unrealized losses
Less Than 12 Months - Estimated Fair Value	$ 31,654	$ 27,045
Less Than 12 Months - Gross Unrealized Losses	(22)	(8)
Total - Estimated Fair Value	31,654	27,045
Total - Gross Unrealized Losses	$ (22)	$ (8)

Amount of gross unrealized loss on securities classified as available-for-sale securities that have been in a loss position as of the reporting date.

No definition available.

+ Details

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- Definition

Amount of gross unrealized loss on securities classified as available-for-sale securities that have been in a loss position for less than twelve months as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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- Definition

This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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Data Type:	xbrli:monetaryItemType
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