Represents the amortization period for deferred stock issuance costs under tax benefits allowed to industrial company.

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Experation period since approval

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Experation period since beginning of the year of election

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Experation period since enterpise began operating

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Foreign investors' company tax benefits pecent

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Foreign investors'' company tax benefits period

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Represents the industrial company defined as a company resident in Israel based on minimum percentage of income derived from an industrial enterprise owned by it.

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Minimum qualifying investment

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Operating Loss Carryforwards, Annual Limitations on Use

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Period in which investment must be made

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Period of tax exemption

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Taxes On Income [Line Items]

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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TAXES ON INCOME (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Taxes On Income [Line Items]
Period of tax exemption	2 years
Period in which investment must be made	3 years
Minimum qualifying investment	$ 20,000
Experation period since approval	14 years
Experation period since enterpise began operating	12 years
Experation period since beginning of the year of election	10 years
Foreign investors'' company tax benefits period	12 years
Foreign investors' company tax benefits pecent	74.00%
Effective corporate income tax rate	23.00%	24.00%	25.00%
Net operating losses	$ 190,735
Capital loss	7,538
Accrued interest and penalties	84
Tax asset	$ 7,200
First Two Years [Member] \| Minimum [Member]
Taxes On Income [Line Items]
Foreign investors' company tax benefits pecent	10.00%
First Two Years [Member] \| Maximum [Member]
Taxes On Income [Line Items]
Foreign investors' company tax benefits pecent	25.00%
Preferred Technological Enterprise income [Member]
Taxes On Income [Line Items]
Tax rate reduction percent	12.00%
Law For Encouragement Of Industry Taxes [Member]
Taxes On Income [Line Items]
Industrial company defined as a company resident in Israel based on minimum percentage of income derived from an industrial enterprise owned by it	20.00%
Amortization period for deferred stock issuance costs	3 years
Norway [Member]
Taxes On Income [Line Items]
Net operating losses	$ 15,392
Brazil [Member]
Taxes On Income [Line Items]
Net operating losses	$ 43,805
Annual limit against taxable income	30.00%
Domestic Country [Member] \| Minimum [Member]
Taxes On Income [Line Items]
Effective corporate income tax rate	21.00%
Domestic Country [Member] \| Maximum [Member]
Taxes On Income [Line Items]
Effective corporate income tax rate	35.00%