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FAIR VALUE OF CERTAIN FINANCIAL ASSETS AND LIABILITIES (Details 4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Auction rate securities
Fair value of level 3 financial assets, roll forward
Balance at the beginning of the period	$ 3,246	$ 12,819	$ 3,910	$ 16,184
Total gains (losses) for the period: Included in earnings	141	648	202	732
Settlements	(1,900)	(8,625)	(2,625)	(12,074)
Balance at the end of the period	1,487	4,842	1,487	4,842
Put options
Fair value of level 3 financial assets, roll forward
Balance at the beginning of the period	189	994	250	1,092
Total gains (losses) for the period: Included in earnings	(141)	(674)	(202)	(772)
Balance at the end of the period	$ 48	$ 320	$ 48	$ 320

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- Definition

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+ References

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- Definition

Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 820



-SubTopic 10



-Section 50



-Paragraph 2



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- Definition

Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 820



-SubTopic 10



-Section 50



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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 820



-SubTopic 10



-Section 50



-Paragraph 2



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