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INFORMATION ON GEOGRAPHIC AREAS AND MAJOR CUSTOMERS (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Schedule of Revenues by Geographic Area

		Year ended December 31,
		2017				2016				2015
USA			52	%			49	%			44	%
Japan			32				36				41
Asia *			12				12				11
Europe			4				3				4
Total			100	%			100	%			100	%

Schedule of Long-Lived Assets by Geographic Area

Substantially all of Tower’s long-lived assets are located in Israel, substantially all of Jazz’s and TJT’s long-lived assets are located in the United States and substantially all of TPSCo’s long-lived assets are located in Japan.

		As of December 31,
		2017				2016
Israel		$	218,810			$	215,511
United States			214,393				203,501
Japan			201,921				197,674
Total		$	635,124			$	616,686

Schedule of Accounts Receivable of Major Customers

Accounts receivable from significant customers representing 10% or more of the net accounts receivable balance as of December 31, 2017 and 2016, consist of the following customers:

		As of December 31,
		2017				2016
Customer 1			13	%			23	%
Customer 2			9	%			15	%

Schedule of Revenues of Major Customers

		Year ended December 31,
		2017				2016				2015
Customer A			30	%			35	%			40	%
Customer B			12				12				13
Other customers *			15				14				6

* Represents sales to 2 different customers accounted for 7% and 8% of sales during 2017, to two different customers accounted for 5% and 9% of sales during 2016 and to one customer accounted for 6% during 2015.

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- Definition

Tabular disclosure about the outstanding balance of accounts receivable from major customers, presented as a percentage of the aggregate accounts receivable balance.

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- Definition

Tabular disclosure of the names of foreign countries in which material long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets are located, and amount of such long-lived assets located in that country or foreign geographic area.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

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- Definition

Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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