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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASURMENTS (Tables)

12 Months Ended

Dec. 31, 2017

FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS [Abstract]

Schedule of Recurring Fair Value Measurements

Recurring Fair Value Measurements Using the Indicated Inputs:

		December 31, 2017				Quoted prices in active market for identical liability (Level 1)				Significant other observable inputs (Level 2)				Significant unobservable inputs (Level 3)
Cross currency swap- asset position		$	16,455			$	--			$	16,455			$	--
Marketable securities held for sale			113,168				113,168				--				--
Foreign exchange forward and cylinders - liability position			(169	)			--				(169	)			--
Foreign exchange forward and cylinders - asset position			24				--				24				--
		$	129,478			$	113,168			$	16,310			$	--

		December 31, 2016				Quoted prices in active market for identical liability (Level 1)				Significant other observable inputs (Level 2)				Significant unobservable inputs (Level 3)
Cross currency swap- liability position		$	67			$	--			$	67			$	--
Foreign exchange forward and cylinders - liability position			976								976				--
		$	1,043			$	--			$	1,043			$	--

Schedule of Liabilities Measured on a Recurring Basis Using Significant Unobservable Inputs

Liabilities measured on a recurring basis using significant unobservable inputs (Level 3):

		Tower’s Israeli Banks Loans (including current maturities)				Others
As of January 1, 2016 - at fair value		$	74,955			$	--
principal repayment			(82,855	)			--
Total changes in fair value recognized in earnings			7,900				--
As of December 31, 2016 - at fair value		$	--			$	--

Schedule of Marketable Securities

The following table summarizes amortized costs, gross unrealized gains and losses and estimated fair values of available-for-sale marketable securities as of December 31, 2017:

		Amortized cost				Gross unrealized gains				Gross unrealized losses				Estimated fair value
Corporate bonds		$	98,998			$	25			$	(683	)		$	98,340
Non- U.S government bonds			2,730				--				(19	)			2,711
Municipal bonds			11,950				15				(96	)			11,869
Certificate of deposits			248				--				--				248
		$	113,926			$	40			$	(798	)		$	113,168

Schedule of Maturities of Marketable Securities

The scheduled maturities of available-for-sale marketable securities as of December 31, 2017 were as follows:

		Amortized cost				Estimated fair value
Due within one year		$	7,688			$	7,679
Due after one year through five years			106,238				105,489
		$	113,926			$	113,168

Schedule of Investments with Continuous Unrealized Losses

Investments with continuous unrealized losses for less than 12 months and 12 months or greater and their related fair values as of December 31, 2017 were as indicated in the following tables:

		December 31, 2017
		Investment with continuous unrealized losses for less than 12 months								Investments with continuous unrealized losses for 12 months or greater								Total Investments with continuous unrealized losses
		Fair value				Unrealized losses				Fair value				Unrealized losses				Fair value				Unrealized losses
Corporate debentures		$	89,133			$	(683	)		$	--			$	--			$	89,133			$	(683	)
Non- U.S government bonds			2,711				(19	)			--				--				2,711				(19	)
Municipal bonds			8,837				(96	)			--				--				8,837				(96	)
Total		$	100,681			$	(798	)		$	--			$	--			$	100,681			$	(798	)

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Schedule of Marketable Securities.

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Tabular disclosure of maturities of marketable securities.

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Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258

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-Publisher FASB
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-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
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For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
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