CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (5,972)us-gaap_NetIncomeLoss	$ (7,345)us-gaap_NetIncomeLoss
Adjustments required to reconcile net loss to net cash used in operating activities:
Share based compensation	419us-gaap_ShareBasedCompensation	670us-gaap_ShareBasedCompensation
Depreciation	616us-gaap_Depreciation	828us-gaap_Depreciation
Financial expenses, net (mainly exchange differences)	284	14
Changes in accrued liability for employee rights upon retirement	(4)	50
Gain on amounts funded in respect of employee rights upon retirement	(1)	(1)
Amortization of debt issuance costs and debt discount	110us-gaap_AmortizationOfFinancingCosts	109us-gaap_AmortizationOfFinancingCosts
Changes in operating assets and liabilities:
Decrease in deferred revenues (including non-current portion)	(33)	(2,901)
Increase in accounts receivable and other assets	(735)	(744)
Decrease (increase) in inventories	(212)us-gaap_IncreaseDecreaseInInventories	1,430us-gaap_IncreaseDecreaseInInventories
Decrease in accounts payable and accruals (including long term )	(893)	(450)
Net cash used in operating activities	(6,421)	(8,340)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(99)	(263)
Investment in restricted deposit		(57)
Amounts funded in respect of employee rights upon retirement, net		(50)
Net cash used in investing activities	(99)	(370)
CASH FLOWS FROM FINANCING ACTIVITIES:
Exercise of options		31
Net cash provided by financing activities		31
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(289)	(29)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(6,809)	(8,708)
BALANCE OF CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	54,767	86,398
BALANCE OF CASH AND CASH EQUIVALENTS AT END OF PERIOD	47,958	77,690
SUPPLEMENTARY INFORMATION ON INVESTING AND FINANCING ACTIVITIES NOT INVOLVING CASH FLOWS:
Purchase of property and equipment	194	138
Exercise of options granted to employees		12plx_CashlessExerciseOfStockOptions
SUPPLEMENTARY DISCLOSURE ON CASH FLOWS
Interest paid	$ 1,553us-gaap_InterestPaidNet	$ 1,527us-gaap_InterestPaidNet

Cashless exercise of stock options.

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Increase in liabilities for property, plant and equipment.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period).

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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