SUPPLEMENTARY BALANCE SHEET INFORMATION (Schedule of Other Current Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
SUPPLEMENTARY BALANCE SHEET INFORMATION [Abstract]
Advances from customers	$ 2,940	$ 28,878
Payroll and related employee accruals	6,793	6,323
Deferred revenue	3,987us-gaap_DeferredRevenueCurrent	6,255us-gaap_DeferredRevenueCurrent
Provision for vacation pay	5,101us-gaap_AccruedVacationCurrent	6,008us-gaap_AccruedVacationCurrent
Derivative instruments	806us-gaap_DerivativeLiabilitiesCurrent
Government authorities	1,173us-gaap_AccruedRoyaltiesCurrent	2,233us-gaap_AccruedRoyaltiesCurrent
Other	727us-gaap_OtherSundryLiabilitiesCurrent	4,969us-gaap_OtherSundryLiabilitiesCurrent
Other current liabilities	$ 21,527us-gaap_OtherLiabilitiesCurrent	$ 54,666us-gaap_OtherLiabilitiesCurrent

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable for unused vacation time owed to employees based on the entity's vacation benefit given to its employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The current portion of aggregate prepayments received from customers for goods or services to be provided in the future, as well as the current portion of money or property received from customers that are to be returned upon satisfactory contract completion or as partial prepayment for goods or services to be provided in the future.

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The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are due within one year or operating cycle, if longer, from the balance sheet date.

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