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SHAREHOLDERS' EQUITY (Ordinary Shares) (Narrative) (Details) (ILS)	1 Months Ended
	Aug. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
SHAREHOLDERS' EQUITY [Abstract]
Reverse stock split, shares exchanged for one share of common stock	15tsem_StockholdersEquityReverseStockSplitSharesRatio
Ordinary shares, authorized		150,000,000us-gaap_CommonStockSharesAuthorized	150,000,000us-gaap_CommonStockSharesAuthorized
Ordinary shares, par value		15us-gaap_CommonStockParOrStatedValuePerShare	15us-gaap_CommonStockParOrStatedValuePerShare
Ordinary shares, issued		58,120,000us-gaap_CommonStockSharesIssued	47,956,000us-gaap_CommonStockSharesIssued
Ordinary shares, outstanding		58,034,000us-gaap_CommonStockSharesOutstanding	47,870,000us-gaap_CommonStockSharesOutstanding
Treasury stock, shares		86,000us-gaap_TreasuryStockShares	86,000us-gaap_TreasuryStockShares

X

- Definition

Number of shares exchanged for one share of common stock.

+ References

No definition available.

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- Definition

Face amount or stated value per share of common stock.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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X

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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X

- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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